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#
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# Setup Firewall
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#
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# Load utility functions
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. ./functions.sh
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if [ "$ENABLE_IPTABLES" = true ] ; then
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# Create iptables configuration directory
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mkdir -p "${ETC_DIR}/iptables"
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# make sure iptables-legacy is the used alternatives
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#iptables-save and -restore are slaves of iptables and thus are set accordingly
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chroot_exec update-alternatives --verbose --set iptables /usr/sbin/iptables-legacy
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# Install iptables systemd service
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install_readonly files/iptables/iptables.service "${ETC_DIR}/systemd/system/iptables.service"
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# Install flush-table script called by iptables service
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install_exec files/iptables/flush-iptables.sh "${ETC_DIR}/iptables/flush-iptables.sh"
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# Install iptables rule file
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install_readonly files/iptables/iptables.rules "${ETC_DIR}/iptables/iptables.rules"
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# Reload systemd configuration and enable iptables service
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chroot_exec systemctl daemon-reload
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chroot_exec systemctl enable iptables.service
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if [ "$ENABLE_IPV6" = true ] ; then
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# Install ip6tables systemd service
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install_readonly files/iptables/ip6tables.service "${ETC_DIR}/systemd/system/ip6tables.service"
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# Install ip6tables file
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install_exec files/iptables/flush-ip6tables.sh "${ETC_DIR}/iptables/flush-ip6tables.sh"
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install_readonly files/iptables/ip6tables.rules "${ETC_DIR}/iptables/ip6tables.rules"
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# Reload systemd configuration and enable iptables service
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chroot_exec systemctl daemon-reload
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chroot_exec systemctl enable ip6tables.service
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fi
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if [ "$ENABLE_SSHD" = false ] ; then
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# Remove SSHD related iptables rules
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sed -i "/^#/! {/SSH/ s/^/# /}" "${ETC_DIR}/iptables/iptables.rules" 2> /dev/null
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sed -i "/^#/! {/SSH/ s/^/# /}" "${ETC_DIR}/iptables/ip6tables.rules" 2> /dev/null
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fi
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fi
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