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1 | # For more options and information see | |
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2 | # http://www.raspberrypi.org/documentation/configuration/config-txt.md | |
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3 | # Some settings may impact device functionality. See link above for details | |
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4 | ||
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5 | # uncomment if you get no picture on HDMI for a default "safe" mode | |
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6 | #hdmi_safe=1 | |
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7 | ||
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8 | # uncomment this if your display has a black border of unused pixels visible | |
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9 | # and your display can output without overscan | |
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10 | #disable_overscan=1 | |
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11 | ||
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12 | # uncomment the following to adjust overscan. Use positive numbers if console | |
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13 | # goes off screen, and negative if there is too much border | |
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14 | #overscan_left=16 | |
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15 | #overscan_right=16 | |
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16 | #overscan_top=16 | |
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17 | #overscan_bottom=16 | |
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18 | ||
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19 | # uncomment to force a console size. By default it will be display's size minus | |
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20 | # overscan. | |
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21 | #framebuffer_width=1280 | |
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22 | #framebuffer_height=720 | |
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23 | ||
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24 | # uncomment if hdmi display is not detected and composite is being output | |
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25 | #hdmi_force_hotplug=1 | |
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26 | ||
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27 | # uncomment to force a specific HDMI mode (this will force VGA) | |
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28 | #hdmi_group=1 | |
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29 | #hdmi_mode=1 | |
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30 | ||
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31 | # uncomment to force a HDMI mode rather than DVI. This can make audio work in | |
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32 | # DMT (computer monitor) modes | |
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33 | #hdmi_drive=2 | |
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34 | ||
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35 | # uncomment to increase signal to HDMI, if you have interference, blanking, or | |
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36 | # no display | |
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37 | #config_hdmi_boost=4 | |
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38 | ||
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39 | # uncomment for composite PAL | |
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40 | #sdtv_mode=2 | |
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41 | ||
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42 | # uncomment to overclock the arm. 700 MHz is the default. | |
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43 | #arm_freq=800 | |
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1 | logger -t "rc.firstboot" "Generating SSH host keys" | |
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2 | rm -f /etc/ssh/ssh_host_* | |
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3 | ssh-keygen -q -t rsa -N "" -f /etc/ssh/ssh_host_rsa_key | |
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4 | ssh-keygen -q -t dsa -N "" -f /etc/ssh/ssh_host_dsa_key | |
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5 | ssh-keygen -q -t ecdsa -N "" -f /etc/ssh/ssh_host_ecdsa_key | |
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6 | ssh-keygen -q -t ed25519 -N "" -f /etc/ssh/ssh_host_ed25519_key | |
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7 | ||
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8 | systemctl restart sshd | |
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1 | logger -t "rc.firstboot" "Expanding root" | |
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2 | ROOT_PART=$(mount | sed -n 's|^/dev/\(.*\) on / .*|\1|p') | |
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3 | PART_NUM=$(echo ${ROOT_PART} | grep -o '[1-9][0-9]*$') | |
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4 | case "${ROOT_PART}" in | |
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5 | mmcblk0*) ROOT_DEV=mmcblk0 ;; | |
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6 | sda*) ROOT_DEV=sda ;; | |
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7 | esac | |
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8 | if [ "$PART_NUM" = "$ROOT_PART" ]; then | |
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9 | logger -t "rc.firstboot" "$ROOT_PART is not an SD card. Don't know how to expand" | |
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10 | return 0 | |
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11 | fi | |
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12 | ||
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13 | # NOTE: the NOOBS partition layout confuses parted. For now, let's only | |
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14 | # agree to work with a sufficiently simple partition layout | |
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15 | if [ "$PART_NUM" -gt 2 ]; then | |
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16 | logger -t "rc.firstboot" "Your partition layout is not currently supported by this tool." | |
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17 | return 0 | |
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18 | fi | |
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19 | LAST_PART_NUM=$(parted /dev/${ROOT_DEV} -ms unit s p | tail -n 1 | cut -f 1 -d:) | |
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20 | if [ $LAST_PART_NUM -ne $PART_NUM ]; then | |
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21 | logger -t "rc.firstboot" "$ROOT_PART is not the last partition. Don't know how to expand" | |
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22 | return 0 | |
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23 | fi | |
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24 | ||
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25 | # Get the starting offset of the root partition | |
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26 | PART_START=$(parted /dev/${ROOT_DEV} -ms unit s p | grep "^${PART_NUM}" | cut -f 2 -d: | sed 's/[^0-9]//g') | |
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27 | [ "$PART_START" ] || return 1 | |
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28 | ||
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29 | # Get the possible last sector for the root partition | |
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30 | PART_LAST=$(fdisk -l /dev/${ROOT_DEV} | grep '^Disk.*sectors' | awk '{ print $7 - 1 }') | |
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31 | [ "$PART_LAST" ] || return 1 | |
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32 | ||
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33 | # Return value will likely be error for fdisk as it fails to reload the | |
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34 | # partition table because the root fs is mounted | |
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35 | ### Since rc.local is run with "sh -e", let's add "|| true" to prevent premature exit | |
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36 | fdisk /dev/${ROOT_DEV} <<EOF2 || true | |
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37 | p | |
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38 | d | |
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39 | $PART_NUM | |
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40 | n | |
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41 | p | |
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42 | $PART_NUM | |
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43 | $PART_START | |
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44 | $PART_LAST | |
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45 | p | |
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46 | w | |
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47 | EOF2 | |
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48 | ||
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49 | # Reload the partition table, resize root filesystem then remove resizing code from this file | |
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50 | partprobe && | |
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51 | resize2fs /dev/${ROOT_PART} && | |
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52 | logger -t "rc.firstboot" "Root partition successfuly resized." | |
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1 | logger -t "rc.firstboot" "First boot actions finished" | |
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2 | rm -f /etc/rc.firstboot | |
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3 | sed -i '/.*rc.firstboot/d' /etc/rc.local | |
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1 | /dev/mmcblk0p2 / ext4 noatime,nodiratime,errors=remount-ro,discard,data=writeback,commit=100 0 1 | |
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2 | /dev/mmcblk0p1 /boot/firmware vfat defaults,noatime,nodiratime 0 2 | |
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1 | #!/bin/sh | |
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2 | ip6tables -F | |
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3 | ip6tables -X | |
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4 | ip6tables -Z | |
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5 | ||
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6 | for table in $(</proc/net/ip6_tables_names) | |
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7 | do | |
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8 | ip6tables -t \$table -F | |
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9 | ip6tables -t \$table -X | |
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10 | ip6tables -t \$table -Z | |
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11 | done | |
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12 | ||
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13 | ip6tables -P INPUT ACCEPT | |
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14 | ip6tables -P OUTPUT ACCEPT | |
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15 | ip6tables -P FORWARD ACCEPT | |
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1 | #!/bin/sh | |
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2 | iptables -F | |
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3 | iptables -X | |
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4 | iptables -t nat -F | |
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5 | iptables -t nat -X | |
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6 | iptables -t mangle -F | |
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7 | iptables -t mangle -X | |
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8 | iptables -P INPUT ACCEPT | |
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9 | iptables -P FORWARD ACCEPT | |
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10 | iptables -P OUTPUT ACCEPT | |
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1 | *filter | |
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2 | :INPUT DROP [0:0] | |
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3 | :FORWARD DROP [0:0] | |
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4 | :OUTPUT ACCEPT [0:0] | |
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5 | :TCP - [0:0] | |
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6 | :UDP - [0:0] | |
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7 | :SSH - [0:0] | |
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8 | ||
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9 | # Drop packets with RH0 headers | |
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10 | -A INPUT -m rt --rt-type 0 -j DROP | |
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11 | -A OUTPUT -m rt --rt-type 0 -j DROP | |
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12 | -A FORWARD -m rt --rt-type 0 -j DROP | |
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13 | ||
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14 | # Rate limit ping requests | |
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15 | -A INPUT -p icmpv6 --icmpv6-type echo-request -m limit --limit 30/min --limit-burst 8 -j ACCEPT | |
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16 | -A INPUT -p icmpv6 --icmpv6-type echo-request -j DROP | |
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17 | ||
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18 | # Accept established connections | |
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19 | -A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT | |
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20 | ||
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21 | # Accept all traffic on loopback interface | |
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22 | -A INPUT -i lo -j ACCEPT | |
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23 | ||
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24 | # Drop packets declared invalid | |
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25 | -A INPUT -m conntrack --ctstate INVALID -j DROP | |
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26 | ||
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27 | # SSH rate limiting | |
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28 | -A INPUT -p tcp --dport ssh -m conntrack --ctstate NEW -j SSH | |
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29 | -A SSH -m recent --name sshbf --rttl --rcheck --hitcount 3 --seconds 10 -j DROP | |
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30 | -A SSH -m recent --name sshbf --rttl --rcheck --hitcount 20 --seconds 1800 -j DROP | |
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31 | -A SSH -m recent --name sshbf --set -j ACCEPT | |
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32 | ||
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33 | # Send TCP and UDP connections to their respective rules chain | |
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34 | -A INPUT -p udp -m conntrack --ctstate NEW -j UDP | |
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35 | -A INPUT -p tcp --syn -m conntrack --ctstate NEW -j TCP | |
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36 | ||
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37 | # Reject dropped packets with a RFC compliant responce | |
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38 | -A INPUT -p udp -j REJECT --reject-with icmp6-adm-prohibited | |
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39 | -A INPUT -p tcp -j REJECT --reject-with icmp6-adm-prohibited | |
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40 | -A INPUT -j REJECT --reject-with icmp6-adm-prohibited | |
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41 | ||
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42 | ## TCP PORT RULES | |
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43 | # -A TCP -p tcp -j LOG | |
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44 | ||
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45 | ## UDP PORT RULES | |
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46 | # -A UDP -p udp -j LOG | |
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47 | ||
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48 | COMMIT | |
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1 | [Unit] | |
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2 | Description=Packet Filtering Framework | |
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3 | DefaultDependencies=no | |
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4 | After=systemd-sysctl.service | |
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5 | Before=sysinit.target | |
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6 | ||
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7 | [Service] | |
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8 | Type=oneshot | |
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9 | ExecStart=/sbin/ip6tables-restore /etc/iptables/ip6tables.rules | |
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10 | ExecReload=/sbin/ip6tables-restore /etc/iptables/ip6tables.rules | |
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11 | ExecStop=/etc/iptables/flush-ip6tables.sh | |
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12 | RemainAfterExit=yes | |
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13 | ||
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14 | [Install] | |
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15 | WantedBy=multi-user.target | |
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1 | *filter | |
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2 | :INPUT DROP [0:0] | |
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3 | :FORWARD DROP [0:0] | |
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4 | :OUTPUT ACCEPT [0:0] | |
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5 | :TCP - [0:0] | |
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6 | :UDP - [0:0] | |
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7 | :SSH - [0:0] | |
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8 | ||
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9 | # Rate limit ping requests | |
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10 | -A INPUT -p icmp --icmp-type echo-request -m limit --limit 30/min --limit-burst 8 -j ACCEPT | |
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11 | -A INPUT -p icmp --icmp-type echo-request -j DROP | |
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12 | ||
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13 | # Accept established connections | |
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14 | -A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT | |
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15 | ||
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16 | # Accept all traffic on loopback interface | |
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17 | -A INPUT -i lo -j ACCEPT | |
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18 | ||
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19 | # Drop packets declared invalid | |
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20 | -A INPUT -m conntrack --ctstate INVALID -j DROP | |
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21 | ||
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22 | # SSH rate limiting | |
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23 | -A INPUT -p tcp --dport ssh -m conntrack --ctstate NEW -j SSH | |
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24 | -A SSH -m recent --name sshbf --rttl --rcheck --hitcount 3 --seconds 10 -j DROP | |
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25 | -A SSH -m recent --name sshbf --rttl --rcheck --hitcount 20 --seconds 1800 -j DROP | |
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26 | -A SSH -m recent --name sshbf --set -j ACCEPT | |
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27 | ||
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28 | # Send TCP and UDP connections to their respective rules chain | |
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29 | -A INPUT -p udp -m conntrack --ctstate NEW -j UDP | |
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30 | -A INPUT -p tcp --syn -m conntrack --ctstate NEW -j TCP | |
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31 | ||
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32 | # Reject dropped packets with a RFC compliant responce | |
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33 | -A INPUT -p udp -j REJECT --reject-with icmp-port-unreachable | |
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34 | -A INPUT -p tcp -j REJECT --reject-with tcp-rst | |
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35 | -A INPUT -j REJECT --reject-with icmp-proto-unreachable | |
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36 | ||
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37 | ## TCP PORT RULES | |
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38 | # -A TCP -p tcp -j LOG | |
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39 | ||
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40 | ## UDP PORT RULES | |
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41 | # -A UDP -p udp -j LOG | |
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42 | ||
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43 | COMMIT | |
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1 | [Unit] | |
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2 | Description=Packet Filtering Framework | |
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3 | DefaultDependencies=no | |
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4 | After=systemd-sysctl.service | |
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5 | Before=sysinit.target | |
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6 | ||
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7 | [Service] | |
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8 | Type=oneshot | |
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9 | ExecStart=/sbin/iptables-restore /etc/iptables/iptables.rules | |
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10 | ExecReload=/sbin/iptables-restore /etc/iptables/iptables.rules | |
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11 | ExecStop=/etc/iptables/flush-iptables.sh | |
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12 | RemainAfterExit=yes | |
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13 | ||
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14 | [Install] | |
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15 | WantedBy=multi-user.target | |
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1 | blacklist snd_soc_core | |
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2 | blacklist snd_pcm | |
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3 | blacklist snd_pcm_dmaengine | |
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4 | blacklist snd_timer | |
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5 | blacklist snd_compress | |
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6 | blacklist snd_soc_pcm512x_i2c | |
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7 | blacklist snd_soc_pcm512x | |
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8 | blacklist snd_soc_tas5713 | |
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9 | blacklist snd_soc_wm8804 | |
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1 | # Avoid swapping and increase cache sizes | |
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2 | vm.swappiness=1 | |
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3 | vm.dirty_background_ratio=20 | |
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4 | vm.dirty_ratio=40 | |
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5 | vm.dirty_writeback_centisecs=500 | |
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6 | vm.dirty_expire_centisecs=6000 | |
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1 | # Enable network stack hardening | |
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2 | net.ipv4.tcp_timestamps=0 | |
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3 | net.ipv4.tcp_syncookies=1 | |
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4 | net.ipv4.conf.all.rp_filter=1 | |
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5 | net.ipv4.conf.all.accept_redirects=0 | |
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6 | net.ipv4.conf.all.send_redirects=0 | |
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7 | net.ipv4.conf.all.accept_source_route=0 | |
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8 | net.ipv4.conf.default.rp_filter=1 | |
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9 | net.ipv4.conf.default.accept_redirects=0 | |
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10 | net.ipv4.conf.default.send_redirects=0 | |
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11 | net.ipv4.conf.default.accept_source_route=0 | |
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12 | net.ipv4.conf.lo.accept_redirects=0 | |
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13 | net.ipv4.conf.lo.send_redirects=0 | |
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14 | net.ipv4.conf.lo.accept_source_route=0 | |
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15 | net.ipv4.conf.eth0.accept_redirects=0 | |
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16 | net.ipv4.conf.eth0.send_redirects=0 | |
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17 | net.ipv4.conf.eth0.accept_source_route=0 | |
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18 | net.ipv4.icmp_echo_ignore_broadcasts=1 | |
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19 | net.ipv4.icmp_ignore_bogus_error_responses=1 | |
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20 | ||
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21 | net.ipv6.conf.all.accept_redirects=0 | |
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22 | net.ipv6.conf.all.accept_source_route=0 | |
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23 | net.ipv6.conf.all.router_solicitations=0 | |
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24 | net.ipv6.conf.all.accept_ra_rtr_pref=0 | |
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25 | net.ipv6.conf.all.accept_ra_pinfo=0 | |
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26 | net.ipv6.conf.all.accept_ra_defrtr=0 | |
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27 | net.ipv6.conf.all.autoconf=0 | |
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28 | net.ipv6.conf.all.dad_transmits=0 | |
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29 | net.ipv6.conf.all.max_addresses=1 | |
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30 | ||
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31 | net.ipv6.conf.default.accept_redirects=0 | |
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32 | net.ipv6.conf.default.accept_source_route=0 | |
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33 | net.ipv6.conf.default.router_solicitations=0 | |
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34 | net.ipv6.conf.default.accept_ra_rtr_pref=0 | |
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35 | net.ipv6.conf.default.accept_ra_pinfo=0 | |
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36 | net.ipv6.conf.default.accept_ra_defrtr=0 | |
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37 | net.ipv6.conf.default.autoconf=0 | |
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38 | net.ipv6.conf.default.dad_transmits=0 | |
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39 | net.ipv6.conf.default.max_addresses=1 | |
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40 | ||
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41 | net.ipv6.conf.lo.accept_redirects=0 | |
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42 | net.ipv6.conf.lo.accept_source_route=0 | |
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43 | net.ipv6.conf.lo.router_solicitations=0 | |
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44 | net.ipv6.conf.lo.accept_ra_rtr_pref=0 | |
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45 | net.ipv6.conf.lo.accept_ra_pinfo=0 | |
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46 | net.ipv6.conf.lo.accept_ra_defrtr=0 | |
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47 | net.ipv6.conf.lo.autoconf=0 | |
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48 | net.ipv6.conf.lo.dad_transmits=0 | |
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49 | net.ipv6.conf.lo.max_addresses=1 | |
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50 | ||
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51 | net.ipv6.conf.eth0.accept_redirects=0 | |
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52 | net.ipv6.conf.eth0.accept_source_route=0 | |
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53 | net.ipv6.conf.eth0.router_solicitations=0 | |
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54 | net.ipv6.conf.eth0.accept_ra_rtr_pref=0 | |
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55 | net.ipv6.conf.eth0.accept_ra_pinfo=0 | |
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56 | net.ipv6.conf.eth0.accept_ra_defrtr=0 | |
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57 | net.ipv6.conf.eth0.autoconf=0 | |
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58 | net.ipv6.conf.eth0.dad_transmits=0 | |
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59 | net.ipv6.conf.eth0.max_addresses=1 | |
| @@ -422,51 +422,7 fi | |||
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422 | 422 | echo "${CMDLINE}" >$R/boot/firmware/cmdline.txt |
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423 | 423 | |
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424 | 424 | # Set up firmware config |
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425 | cat <<EOM >$R/boot/firmware/config.txt | |
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426 | # For more options and information see | |
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427 | # http://www.raspberrypi.org/documentation/configuration/config-txt.md | |
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428 | # Some settings may impact device functionality. See link above for details | |
|
|
429 | ||
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430 | # uncomment if you get no picture on HDMI for a default "safe" mode | |
|
|
431 | #hdmi_safe=1 | |
|
|
432 | ||
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|
433 | # uncomment this if your display has a black border of unused pixels visible | |
|
|
434 | # and your display can output without overscan | |
|
|
435 | #disable_overscan=1 | |
|
|
436 | ||
|
|
437 | # uncomment the following to adjust overscan. Use positive numbers if console | |
|
|
438 | # goes off screen, and negative if there is too much border | |
|
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439 | #overscan_left=16 | |
|
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440 | #overscan_right=16 | |
|
|
441 | #overscan_top=16 | |
|
|
442 | #overscan_bottom=16 | |
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|
443 | ||
|
|
444 | # uncomment to force a console size. By default it will be display's size minus | |
|
|
445 | # overscan. | |
|
|
446 | #framebuffer_width=1280 | |
|
|
447 | #framebuffer_height=720 | |
|
|
448 | ||
|
|
449 | # uncomment if hdmi display is not detected and composite is being output | |
|
|
450 | #hdmi_force_hotplug=1 | |
|
|
451 | ||
|
|
452 | # uncomment to force a specific HDMI mode (this will force VGA) | |
|
|
453 | #hdmi_group=1 | |
|
|
454 | #hdmi_mode=1 | |
|
|
455 | ||
|
|
456 | # uncomment to force a HDMI mode rather than DVI. This can make audio work in | |
|
|
457 | # DMT (computer monitor) modes | |
|
|
458 | #hdmi_drive=2 | |
|
|
459 | ||
|
|
460 | # uncomment to increase signal to HDMI, if you have interference, blanking, or | |
|
|
461 | # no display | |
|
|
462 | #config_hdmi_boost=4 | |
|
|
463 | ||
|
|
464 | # uncomment for composite PAL | |
|
|
465 | #sdtv_mode=2 | |
|
|
466 | ||
|
|
467 | # uncomment to overclock the arm. 700 MHz is the default. | |
|
|
468 | #arm_freq=800 | |
|
|
469 | EOM | |
|
|
425 | install -o root -g root -m 644 files/config.txt $R/boot/firmware/config.txt | |
|
|
470 | 426 | |
|
|
471 | 427 | # Load snd_bcm2835 kernel module at boot time |
|
|
472 | 428 | if [ "$ENABLE_SOUND" = true ] ; then |
| @@ -496,99 +452,17 fi | |||
|
|
496 | 452 | mkdir -p $R/etc/modprobe.d/ |
|
|
497 | 453 | |
|
|
498 | 454 | # Blacklist sound modules |
|
|
499 | cat <<EOM >$R/etc/modprobe.d/raspi-blacklist.conf | |
|
|
500 | blacklist snd_soc_core | |
|
|
501 | blacklist snd_pcm | |
|
|
502 | blacklist snd_pcm_dmaengine | |
|
|
503 | blacklist snd_timer | |
|
|
504 | blacklist snd_compress | |
|
|
505 | blacklist snd_soc_pcm512x_i2c | |
|
|
506 | blacklist snd_soc_pcm512x | |
|
|
507 | blacklist snd_soc_tas5713 | |
|
|
508 | blacklist snd_soc_wm8804 | |
|
|
509 | EOM | |
|
|
455 | install -o root -g root -m 644 files/modprobe.d/raspi-blacklist.conf $R/etc/modprobe.d/raspi-blacklist.conf | |
|
|
510 | 456 | |
|
|
511 | 457 | # Create default fstab |
|
|
512 | cat <<EOM >$R/etc/fstab | |
|
|
513 | /dev/mmcblk0p2 / ext4 noatime,nodiratime,errors=remount-ro,discard,data=writeback,commit=100 0 1 | |
|
|
514 | /dev/mmcblk0p1 /boot/firmware vfat defaults,noatime,nodiratime 0 2 | |
|
|
515 | EOM | |
|
|
516 | ||
|
|
517 | # Avoid swapping and increase cache sizes | |
|
|
518 | cat <<EOM >>$R/etc/sysctl.d/99-sysctl.conf | |
|
|
458 | install -o root -g root -m 644 files/fstab $R/etc/fstab | |
|
|
519 | 459 | |
|
|
520 | 460 | # Avoid swapping and increase cache sizes |
|
|
521 | vm.swappiness=1 | |
|
|
522 | vm.dirty_background_ratio=20 | |
|
|
523 | vm.dirty_ratio=40 | |
|
|
524 | vm.dirty_writeback_centisecs=500 | |
|
|
525 | vm.dirty_expire_centisecs=6000 | |
|
|
526 | EOM | |
|
|
461 | install -o root -g root -m 644 files/sysctl.d/81-rpi-vm.conf $R/etc/sysctl.d/81-rpi-vm.conf | |
|
|
527 | 462 | |
|
|
528 | 463 | # Enable network stack hardening |
|
|
529 | 464 | if [ "$ENABLE_HARDNET" = true ] ; then |
|
|
530 | cat <<EOM >>$R/etc/sysctl.d/99-sysctl.conf | |
|
|
531 | ||
|
|
532 | # Enable network stack hardening | |
|
|
533 | net.ipv4.tcp_timestamps=0 | |
|
|
534 | net.ipv4.tcp_syncookies=1 | |
|
|
535 | net.ipv4.conf.all.rp_filter=1 | |
|
|
536 | net.ipv4.conf.all.accept_redirects=0 | |
|
|
537 | net.ipv4.conf.all.send_redirects=0 | |
|
|
538 | net.ipv4.conf.all.accept_source_route=0 | |
|
|
539 | net.ipv4.conf.default.rp_filter=1 | |
|
|
540 | net.ipv4.conf.default.accept_redirects=0 | |
|
|
541 | net.ipv4.conf.default.send_redirects=0 | |
|
|
542 | net.ipv4.conf.default.accept_source_route=0 | |
|
|
543 | net.ipv4.conf.lo.accept_redirects=0 | |
|
|
544 | net.ipv4.conf.lo.send_redirects=0 | |
|
|
545 | net.ipv4.conf.lo.accept_source_route=0 | |
|
|
546 | net.ipv4.conf.eth0.accept_redirects=0 | |
|
|
547 | net.ipv4.conf.eth0.send_redirects=0 | |
|
|
548 | net.ipv4.conf.eth0.accept_source_route=0 | |
|
|
549 | net.ipv4.icmp_echo_ignore_broadcasts=1 | |
|
|
550 | net.ipv4.icmp_ignore_bogus_error_responses=1 | |
|
|
551 | ||
|
|
552 | net.ipv6.conf.all.accept_redirects=0 | |
|
|
553 | net.ipv6.conf.all.accept_source_route=0 | |
|
|
554 | net.ipv6.conf.all.router_solicitations=0 | |
|
|
555 | net.ipv6.conf.all.accept_ra_rtr_pref=0 | |
|
|
556 | net.ipv6.conf.all.accept_ra_pinfo=0 | |
|
|
557 | net.ipv6.conf.all.accept_ra_defrtr=0 | |
|
|
558 | net.ipv6.conf.all.autoconf=0 | |
|
|
559 | net.ipv6.conf.all.dad_transmits=0 | |
|
|
560 | net.ipv6.conf.all.max_addresses=1 | |
|
|
561 | ||
|
|
562 | net.ipv6.conf.default.accept_redirects=0 | |
|
|
563 | net.ipv6.conf.default.accept_source_route=0 | |
|
|
564 | net.ipv6.conf.default.router_solicitations=0 | |
|
|
565 | net.ipv6.conf.default.accept_ra_rtr_pref=0 | |
|
|
566 | net.ipv6.conf.default.accept_ra_pinfo=0 | |
|
|
567 | net.ipv6.conf.default.accept_ra_defrtr=0 | |
|
|
568 | net.ipv6.conf.default.autoconf=0 | |
|
|
569 | net.ipv6.conf.default.dad_transmits=0 | |
|
|
570 | net.ipv6.conf.default.max_addresses=1 | |
|
|
571 | ||
|
|
572 | net.ipv6.conf.lo.accept_redirects=0 | |
|
|
573 | net.ipv6.conf.lo.accept_source_route=0 | |
|
|
574 | net.ipv6.conf.lo.router_solicitations=0 | |
|
|
575 | net.ipv6.conf.lo.accept_ra_rtr_pref=0 | |
|
|
576 | net.ipv6.conf.lo.accept_ra_pinfo=0 | |
|
|
577 | net.ipv6.conf.lo.accept_ra_defrtr=0 | |
|
|
578 | net.ipv6.conf.lo.autoconf=0 | |
|
|
579 | net.ipv6.conf.lo.dad_transmits=0 | |
|
|
580 | net.ipv6.conf.lo.max_addresses=1 | |
|
|
581 | ||
|
|
582 | net.ipv6.conf.eth0.accept_redirects=0 | |
|
|
583 | net.ipv6.conf.eth0.accept_source_route=0 | |
|
|
584 | net.ipv6.conf.eth0.router_solicitations=0 | |
|
|
585 | net.ipv6.conf.eth0.accept_ra_rtr_pref=0 | |
|
|
586 | net.ipv6.conf.eth0.accept_ra_pinfo=0 | |
|
|
587 | net.ipv6.conf.eth0.accept_ra_defrtr=0 | |
|
|
588 | net.ipv6.conf.eth0.autoconf=0 | |
|
|
589 | net.ipv6.conf.eth0.dad_transmits=0 | |
|
|
590 | net.ipv6.conf.eth0.max_addresses=1 | |
|
|
591 | EOM | |
|
|
465 | install -o root -g root -m 644 files/sysctl.d/81-rpi-net-hardening.conf $R/etc/sysctl.d/81-rpi-net-hardening.conf | |
|
|
592 | 466 | |
|
|
593 | 467 | # Enable resolver warnings about spoofed addresses |
|
|
594 | 468 | cat <<EOM >>$R/etc/host.conf |
| @@ -596,85 +470,26 spoof warn | |||
|
|
596 | 470 | EOM |
|
|
597 | 471 | fi |
|
|
598 | 472 | |
|
|
473 | # First boot actions | |
|
|
474 | cat files/firstboot/10-begin.sh > $R/etc/rc.firstboot | |
|
|
475 | ||
|
|
599 | 476 | # Ensure openssh server host keys are regenerated on first boot |
|
|
600 | 477 | if [ "$ENABLE_SSHD" = true ] ; then |
|
|
601 | cat <<EOM >>$R/etc/rc.firstboot | |
|
|
602 | #!/bin/sh | |
|
|
603 | rm -f /etc/ssh/ssh_host_* | |
|
|
604 | ssh-keygen -q -t rsa -N "" -f /etc/ssh/ssh_host_rsa_key | |
|
|
605 | ssh-keygen -q -t dsa -N "" -f /etc/ssh/ssh_host_dsa_key | |
|
|
606 | ssh-keygen -q -t ecdsa -N "" -f /etc/ssh/ssh_host_ecdsa_key | |
|
|
607 | ssh-keygen -q -t ed25519 -N "" -f /etc/ssh/ssh_host_ed25519_key | |
|
|
608 | sync | |
|
|
609 | ||
|
|
610 | systemctl restart sshd | |
|
|
611 | sed -i '/.*rc.firstboot/d' /etc/rc.local | |
|
|
612 | rm -f /etc/rc.firstboot | |
|
|
613 | EOM | |
|
|
614 | chmod +x $R/etc/rc.firstboot | |
|
|
615 | sed -i '/exit 0/d' $R/etc/rc.local | |
|
|
616 | echo /etc/rc.firstboot >> $R/etc/rc.local | |
|
|
478 | cat files/firstboot/21-generate-ssh-keys.sh >> $R/etc/rc.firstboot | |
|
|
617 | 479 | rm -f $R/etc/ssh/ssh_host_* |
|
|
618 | 480 | fi |
|
|
619 | 481 | |
|
|
620 | 482 | if [ "$EXPANDROOT" = true ] ; then |
|
|
621 | cat <<EOF > $R/etc/rc.expandroot | |
|
|
622 | #!/bin/sh | |
|
|
623 | ||
|
|
624 | ROOT_PART=\$(mount | sed -n 's|^/dev/\(.*\) on / .*|\1|p') | |
|
|
625 | PART_NUM=\$(echo \${ROOT_PART} | grep -o '[1-9][0-9]*$') | |
|
|
626 | case "\${ROOT_PART}" in | |
|
|
627 | mmcblk0*) ROOT_DEV=mmcblk0 ;; | |
|
|
628 | sda*) ROOT_DEV=sda ;; | |
|
|
629 | esac | |
|
|
630 | if [ "\$PART_NUM" = "\$ROOT_PART" ]; then | |
|
|
631 | logger -t "rc.expandroot" "\$ROOT_PART is not an SD card. Don't know how to expand" | |
|
|
632 | return 0 | |
|
|
633 | fi | |
|
|
634 | # NOTE: the NOOBS partition layout confuses parted. For now, let's only | |
|
|
635 | # agree to work with a sufficiently simple partition layout | |
|
|
636 | if [ "\$PART_NUM" -gt 2 ]; then | |
|
|
637 | logger -t "rc.expandroot" "Your partition layout is not currently supported by this tool." | |
|
|
638 | return 0 | |
|
|
639 | fi | |
|
|
640 | LAST_PART_NUM=\$(parted /dev/\${ROOT_DEV} -ms unit s p | tail -n 1 | cut -f 1 -d:) | |
|
|
641 | if [ \$LAST_PART_NUM -ne \$PART_NUM ]; then | |
|
|
642 | logger -t "rc.expandroot" "\$ROOT_PART is not the last partition. Don't know how to expand" | |
|
|
643 | return 0 | |
|
|
644 | fi | |
|
|
645 | # Get the starting offset of the root partition | |
|
|
646 | PART_START=\$(parted /dev/\${ROOT_DEV} -ms unit s p | grep "^\${PART_NUM}" | cut -f 2 -d: | sed 's/[^0-9]//g') | |
|
|
647 | [ "\$PART_START" ] || return 1 | |
|
|
648 | # Get the possible last sector for the root partition | |
|
|
649 | PART_LAST=\$(fdisk -l /dev/\${ROOT_DEV} | grep '^Disk.*sectors' | awk '{ print \$7 - 1 }') | |
|
|
650 | [ "\$PART_LAST" ] || return 1 | |
|
|
651 | # Return value will likely be error for fdisk as it fails to reload the | |
|
|
652 | # partition table because the root fs is mounted | |
|
|
653 | ### Since rc.local is run with "sh -e", let's add "|| true" to prevent premature exit | |
|
|
654 | fdisk /dev/\${ROOT_DEV} <<EOF2 || true | |
|
|
655 | p | |
|
|
656 | d | |
|
|
657 | \$PART_NUM | |
|
|
658 | n | |
|
|
659 | p | |
|
|
660 | \$PART_NUM | |
|
|
661 | \$PART_START | |
|
|
662 | \$PART_LAST | |
|
|
663 | p | |
|
|
664 | w | |
|
|
665 | EOF2 | |
|
|
666 | # Reload the partition table, resize root filesystem then remove resizing code from this file | |
|
|
667 | partprobe && | |
|
|
668 | resize2fs /dev/\${ROOT_PART} && | |
|
|
669 | logger -t "rc.expandroot" "Root partition successfuly resized." && | |
|
|
670 | sed -i '/.*rc.expandroot/d' /etc/rc.local | |
|
|
671 | rm -f /etc/rc.expandroot | |
|
|
672 | EOF | |
|
|
673 | chmod +x $R/etc/rc.expandroot | |
|
|
674 | sed -i '/exit 0/d' $R/etc/rc.local | |
|
|
675 | echo /etc/rc.expandroot >> $R/etc/rc.local | |
|
|
483 | cat files/firstboot/22-expandroot.sh >> $R/etc/rc.firstboot | |
|
|
676 | 484 | fi |
|
|
677 | 485 | |
|
|
486 | cat files/firstboot/99-finish.sh >> $R/etc/rc.firstboot | |
|
|
487 | chmod +x $R/etc/rc.firstboot | |
|
|
488 | ||
|
|
489 | sed -i '/exit 0/d' $R/etc/rc.local | |
|
|
490 | echo /etc/rc.firstboot >> $R/etc/rc.local | |
|
|
491 | echo exit 0 >> $R/etc/rc.local | |
|
|
492 | ||
|
|
678 | 493 | # Disable rsyslog |
|
|
679 | 494 | if [ "$ENABLE_RSYSLOG" = false ]; then |
|
|
680 | 495 | sed -i 's|[#]*ForwardToSyslog=yes|ForwardToSyslog=no|g' $R/etc/systemd/journald.conf |
| @@ -693,82 +508,13 if [ "$ENABLE_IPTABLES" = true ] ; then | |||
|
|
693 | 508 | mkdir -p "$R/etc/iptables" |
|
|
694 | 509 | |
|
|
695 | 510 | # Create iptables systemd service |
|
|
696 | cat <<EOM >$R/etc/systemd/system/iptables.service | |
|
|
697 | [Unit] | |
|
|
698 | Description=Packet Filtering Framework | |
|
|
699 | DefaultDependencies=no | |
|
|
700 | After=systemd-sysctl.service | |
|
|
701 | Before=sysinit.target | |
|
|
702 | [Service] | |
|
|
703 | Type=oneshot | |
|
|
704 | ExecStart=/sbin/iptables-restore /etc/iptables/iptables.rules | |
|
|
705 | ExecReload=/sbin/iptables-restore /etc/iptables/iptables.rules | |
|
|
706 | ExecStop=/etc/iptables/flush-iptables.sh | |
|
|
707 | RemainAfterExit=yes | |
|
|
708 | [Install] | |
|
|
709 | WantedBy=multi-user.target | |
|
|
710 | EOM | |
|
|
511 | install -o root -g root -m 644 files/iptables/iptables.service $R/etc/systemd/system/iptables.service | |
|
|
711 | 512 | |
|
|
712 | 513 | # Create flush-table script called by iptables service |
|
|
713 | cat <<EOM >$R/etc/iptables/flush-iptables.sh | |
|
|
714 | #!/bin/sh | |
|
|
715 | iptables -F | |
|
|
716 | iptables -X | |
|
|
717 | iptables -t nat -F | |
|
|
718 | iptables -t nat -X | |
|
|
719 | iptables -t mangle -F | |
|
|
720 | iptables -t mangle -X | |
|
|
721 | iptables -P INPUT ACCEPT | |
|
|
722 | iptables -P FORWARD ACCEPT | |
|
|
723 | iptables -P OUTPUT ACCEPT | |
|
|
724 | EOM | |
|
|
514 | install -o root -g root -m 755 files/iptables/flush-iptables.sh $R/etc/iptables/flush-iptables.sh | |
|
|
725 | 515 | |
|
|
726 | 516 | # Create iptables rule file |
|
|
727 | cat <<EOM >$R/etc/iptables/iptables.rules | |
|
|
728 | *filter | |
|
|
729 | :INPUT DROP [0:0] | |
|
|
730 | :FORWARD DROP [0:0] | |
|
|
731 | :OUTPUT ACCEPT [0:0] | |
|
|
732 | :TCP - [0:0] | |
|
|
733 | :UDP - [0:0] | |
|
|
734 | :SSH - [0:0] | |
|
|
735 | ||
|
|
736 | # Rate limit ping requests | |
|
|
737 | -A INPUT -p icmp --icmp-type echo-request -m limit --limit 30/min --limit-burst 8 -j ACCEPT | |
|
|
738 | -A INPUT -p icmp --icmp-type echo-request -j DROP | |
|
|
739 | ||
|
|
740 | # Accept established connections | |
|
|
741 | -A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT | |
|
|
742 | ||
|
|
743 | # Accept all traffic on loopback interface | |
|
|
744 | -A INPUT -i lo -j ACCEPT | |
|
|
745 | ||
|
|
746 | # Drop packets declared invalid | |
|
|
747 | -A INPUT -m conntrack --ctstate INVALID -j DROP | |
|
|
748 | ||
|
|
749 | # SSH rate limiting | |
|
|
750 | -A INPUT -p tcp --dport ssh -m conntrack --ctstate NEW -j SSH | |
|
|
751 | -A SSH -m recent --name sshbf --rttl --rcheck --hitcount 3 --seconds 10 -j DROP | |
|
|
752 | -A SSH -m recent --name sshbf --rttl --rcheck --hitcount 20 --seconds 1800 -j DROP | |
|
|
753 | -A SSH -m recent --name sshbf --set -j ACCEPT | |
|
|
754 | ||
|
|
755 | # Send TCP and UDP connections to their respective rules chain | |
|
|
756 | -A INPUT -p udp -m conntrack --ctstate NEW -j UDP | |
|
|
757 | -A INPUT -p tcp --syn -m conntrack --ctstate NEW -j TCP | |
|
|
758 | ||
|
|
759 | # Reject dropped packets with a RFC compliant responce | |
|
|
760 | -A INPUT -p udp -j REJECT --reject-with icmp-port-unreachable | |
|
|
761 | -A INPUT -p tcp -j REJECT --reject-with tcp-rst | |
|
|
762 | -A INPUT -j REJECT --reject-with icmp-proto-unreachable | |
|
|
763 | ||
|
|
764 | ## TCP PORT RULES | |
|
|
765 | # -A TCP -p tcp -j LOG | |
|
|
766 | ||
|
|
767 | ## UDP PORT RULES | |
|
|
768 | # -A UDP -p udp -j LOG | |
|
|
769 | ||
|
|
770 | COMMIT | |
|
|
771 | EOM | |
|
|
517 | install -o root -g root -m 644 files/iptables/iptables.rules $R/etc/iptables/iptables.rules | |
|
|
772 | 518 | |
|
|
773 | 519 | # Reload systemd configuration and enable iptables service |
|
|
774 | 520 | chroot_exec systemctl daemon-reload |
| @@ -776,94 +522,16 EOM | |||
|
|
776 | 522 | |
|
|
777 | 523 | if [ "$ENABLE_IPV6" = true ] ; then |
|
|
778 | 524 | # Create ip6tables systemd service |
|
|
779 | cat <<EOM >$R/etc/systemd/system/ip6tables.service | |
|
|
780 | [Unit] | |
|
|
781 | Description=Packet Filtering Framework | |
|
|
782 | DefaultDependencies=no | |
|
|
783 | After=systemd-sysctl.service | |
|
|
784 | Before=sysinit.target | |
|
|
785 | [Service] | |
|
|
786 | Type=oneshot | |
|
|
787 | ExecStart=/sbin/ip6tables-restore /etc/iptables/ip6tables.rules | |
|
|
788 | ExecReload=/sbin/ip6tables-restore /etc/iptables/ip6tables.rules | |
|
|
789 | ExecStop=/etc/iptables/flush-ip6tables.sh | |
|
|
790 | RemainAfterExit=yes | |
|
|
791 | [Install] | |
|
|
792 | WantedBy=multi-user.target | |
|
|
793 | EOM | |
|
|
525 | install -o root -g root -m 644 files/iptables/ip6tables.service $R/etc/systemd/system/ip6tables.service | |
|
|
794 | 526 | |
|
|
795 | 527 | # Create ip6tables file |
|
|
796 | cat <<EOM >$R/etc/iptables/flush-ip6tables.sh | |
|
|
797 | #!/bin/sh | |
|
|
798 | ip6tables -F | |
|
|
799 | ip6tables -X | |
|
|
800 | ip6tables -Z | |
|
|
801 | for table in $(</proc/net/ip6_tables_names) | |
|
|
802 | do | |
|
|
803 | ip6tables -t \$table -F | |
|
|
804 | ip6tables -t \$table -X | |
|
|
805 | ip6tables -t \$table -Z | |
|
|
806 | done | |
|
|
807 | ip6tables -P INPUT ACCEPT | |
|
|
808 | ip6tables -P OUTPUT ACCEPT | |
|
|
809 | ip6tables -P FORWARD ACCEPT | |
|
|
810 | EOM | |
|
|
811 | ||
|
|
812 | # Create ip6tables rule file | |
|
|
813 | cat <<EOM >$R/etc/iptables/ip6tables.rules | |
|
|
814 | *filter | |
|
|
815 | :INPUT DROP [0:0] | |
|
|
816 | :FORWARD DROP [0:0] | |
|
|
817 | :OUTPUT ACCEPT [0:0] | |
|
|
818 | :TCP - [0:0] | |
|
|
819 | :UDP - [0:0] | |
|
|
820 | :SSH - [0:0] | |
|
|
821 | ||
|
|
822 | # Drop packets with RH0 headers | |
|
|
823 | -A INPUT -m rt --rt-type 0 -j DROP | |
|
|
824 | -A OUTPUT -m rt --rt-type 0 -j DROP | |
|
|
825 | -A FORWARD -m rt --rt-type 0 -j DROP | |
|
|
826 | ||
|
|
827 | # Rate limit ping requests | |
|
|
828 | -A INPUT -p icmpv6 --icmpv6-type echo-request -m limit --limit 30/min --limit-burst 8 -j ACCEPT | |
|
|
829 | -A INPUT -p icmpv6 --icmpv6-type echo-request -j DROP | |
|
|
830 | ||
|
|
831 | # Accept established connections | |
|
|
832 | -A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT | |
|
|
833 | ||
|
|
834 | # Accept all traffic on loopback interface | |
|
|
835 | -A INPUT -i lo -j ACCEPT | |
|
|
528 | install -o root -g root -m 755 files/iptables/flush-ip6tables.sh $R/etc/iptables/flush-ip6tables.sh | |
|
|
836 | 529 | |
|
|
837 | # Drop packets declared invalid | |
|
|
838 | -A INPUT -m conntrack --ctstate INVALID -j DROP | |
|
|
530 | install -o root -g root -m 644 files/iptables/ip6tables.rules $R/etc/iptables/ip6tables.rules | |
|
|
839 | 531 | |
|
|
840 | # SSH rate limiting | |
|
|
841 | -A INPUT -p tcp --dport ssh -m conntrack --ctstate NEW -j SSH | |
|
|
842 | -A SSH -m recent --name sshbf --rttl --rcheck --hitcount 3 --seconds 10 -j DROP | |
|
|
843 | -A SSH -m recent --name sshbf --rttl --rcheck --hitcount 20 --seconds 1800 -j DROP | |
|
|
844 | -A SSH -m recent --name sshbf --set -j ACCEPT | |
|
|
845 | ||
|
|
846 | # Send TCP and UDP connections to their respective rules chain | |
|
|
847 | -A INPUT -p udp -m conntrack --ctstate NEW -j UDP | |
|
|
848 | -A INPUT -p tcp --syn -m conntrack --ctstate NEW -j TCP | |
|
|
849 | ||
|
|
850 | # Reject dropped packets with a RFC compliant responce | |
|
|
851 | -A INPUT -p udp -j REJECT --reject-with icmp6-adm-prohibited | |
|
|
852 | -A INPUT -p tcp -j REJECT --reject-with icmp6-adm-prohibited | |
|
|
853 | -A INPUT -j REJECT --reject-with icmp6-adm-prohibited | |
|
|
854 | ||
|
|
855 | ## TCP PORT RULES | |
|
|
856 | # -A TCP -p tcp -j LOG | |
|
|
857 | ||
|
|
858 | ## UDP PORT RULES | |
|
|
859 | # -A UDP -p udp -j LOG | |
|
|
860 | ||
|
|
861 | COMMIT | |
|
|
862 | EOM | |
|
|
863 | ||
|
|
864 | # Reload systemd configuration and enable iptables service | |
|
|
865 | chroot_exec systemctl daemon-reload | |
|
|
866 | chroot_exec systemctl enable ip6tables.service | |
|
|
532 | # Reload systemd configuration and enable iptables service | |
|
|
533 | chroot_exec systemctl daemon-reload | |
|
|
534 | chroot_exec systemctl enable ip6tables.service | |
|
|
867 | 535 | fi |
|
|
868 | 536 | fi |
|
|
869 | 537 | |
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