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165 lines
3.5 KiB
165 lines
3.5 KiB
#!/bin/bash
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## Depends lxc-scripts installed
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##
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## Install
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##
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version_gt() { test "$(echo "$@" | tr " " "\n" | sort -V | head -n 1)" != "$1"; }
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shorewall_candidate_version=$(echo $(apt-cache policy shorewall | grep "Candidate:" | cut -f 2 -d :))
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## Support for docker introduced in 5.0.6
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if version_gt "$shorewall_candidate_version" 5.0.5; then
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apt-get install -y shorewall
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else
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(
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VERSION="5.0.7.2-1"
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cd /tmp &&
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wget http://ftp.fr.debian.org/debian/pool/main/s/shorewall-core/shorewall-core_${VERSION}_all.deb &&
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wget http://ftp.fr.debian.org/debian/pool/main/s/shorewall/shorewall_${VERSION}_all.deb &&
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dpkg -i shorewall-core_${VERSION}_all.deb shorewall_${VERSION}_all.deb &&
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rm shorewall-core_${VERSION}_all.deb shorewall_${VERSION}_all.deb
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) || {
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echo "Failed to install shorewall."
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exit 1
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}
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fi
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##
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## Configuration
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##
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cat <<EOF > /etc/shorewall/zones
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fw firewall
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net ipv4
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lan ipv4
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EOF
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cat <<EOF > /etc/shorewall/interfaces
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#ZONE INTERFACE BROADCAST OPTIONS
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net eth0
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## Uncomment to enable vpn setup
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#vpn tun0 detect
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lan lxcbr0 - routeback
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EOF
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cat <<EOF > /etc/shorewall/policy
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#SOURCE DEST RULE LOG
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fw all ACCEPT
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lan all ACCEPT
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net all DROP info
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all all DROP info
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EOF
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cat <<EOF > /etc/shorewall/rules
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SSH/ACCEPT net fw
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Ping/ACCEPT net fw
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BEGIN SHELL
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host_ip="\$(/sbin/ifconfig eth0 2> /dev/null | sed "s/^.*inet ad\+r://g" | grep ^[0-9] | sed "s/ .*$//g")"
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for name in \$(lxc-ls-running); do
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ip=\$(dig +short A "\$name")
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[ -e "/var/lib/lxc/\$name/shorewall" ] &&
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cat /var/lib/lxc/\$name/shorewall | sed -r "s/%%HOST_INTERNET_IP%%/\$host_ip/g" \
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| sed -r "s/%%IP%%/\$ip/g"
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done
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true
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END SHELL
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EOF
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cat <<EOF > /etc/shorewall/masq
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eth0 lxcbr0
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EOF
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cat <<EOF > /etc/shorewall/start
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## correct a bug that prevent DHCP packet to be correctly sent between
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## LXC, preventing them to receive an IP.
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. /etc/default/lxc
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if [ -d "/sys/class/net/\$LXC_BRIDGE" -a "\$(cat /sys/class/net/\$LXC_BRIDGE/operstate)" == "up" ]; then
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source_file=/etc/init/lxc-net.conf
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code=\$(egrep '^\s+iptables.*\s+-j\s+' /etc/init/lxc-net.conf | grep -v '\-D' | sed -r 's/^\s+[^-]+/run_iptables /g')
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echo "Adding LXC rules:"
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echo "\$code"
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eval "\$code"
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fi
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EOF
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##
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## lxc-scripts
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##
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[ -d "/opt/apps/lxc-scripts" ] || {
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echo "Error: required 'lxc-scripts' not installed." >&2
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exit 1
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}
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apt-get install -y moreutils ## needed because ``ts`` is used in this script
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ln -sf /opt/apps/lxc-scripts/etc/cron.d/lxc-shorewall-repair /etc/cron.d/lxc-shorewall-repair
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##
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## Logs
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##
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mkdir -p /var/log/shorewall
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chgrp syslog /var/log/shorewall
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chmod g+w /var/log/shorewall
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cat <<EOF > /etc/rsyslog.d/shorewall.conf
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:msg, contains, "Shorewall:" /var/log/shorewall/main.log
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& ~
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EOF
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cat <<EOF > /etc/logrotate.d/shorewall
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/var/log/shorewall/init.log {
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weekly
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rotate 4
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compress
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missingok
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create 0640 root adm
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}
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/var/log/shorewall/main.log
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{
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rotate 7
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weekly
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missingok
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notifempty
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compress
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delaycompress
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postrotate
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reload rsyslog >/dev/null 2>&1 || true
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endscript
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}
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EOF
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## Init logs
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sed -ri 's%^(STARTUP_LOG=).*$%\1/var/log/shorewall/init.log%g' /etc/shorewall/shorewall.conf
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service rsyslog restart
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##
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##
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##
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## Activate support for docker
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sed -ri 's/^DOCKER=No$/DOCKER=Yes/g' /etc/shorewall/shorewall.conf
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