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adding explicit FORWARD rules to iptables

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Jan Schulz-Hofen 2015-01-08 19:06:27 +07:00
parent 135db489b7
commit 7f822f71dc
1 changed files with 8 additions and 0 deletions
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8
openvpn-install.sh
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@ -106,6 +106,8 @@ if [[ -e /etc/openvpn/server.conf ]]; then
rm -rf /usr/share/doc/openvpn rm -rf /usr/share/doc/openvpn
sed -i '/--dport 53 -j REDIRECT --to-port/d' /etc/rc.local sed -i '/--dport 53 -j REDIRECT --to-port/d' /etc/rc.local
sed -i '/iptables -t nat -A POSTROUTING -s 10.8.0.0/d' /etc/rc.local sed -i '/iptables -t nat -A POSTROUTING -s 10.8.0.0/d' /etc/rc.local
sed -i '/iptables -I FORWARD -s 10.8.0.0/d' /etc/rc.local
sed -i '/iptables -I FORWARD -m conntrack --ctstate RELATED,ESTABLISHED/d' /etc/rc.local
echo "" echo ""
echo "OpenVPN removed!" echo "OpenVPN removed!"
exit exit
@ -237,10 +239,16 @@ else
if [[ "$INTERNALNETWORK" = 'y' ]]; then if [[ "$INTERNALNETWORK" = 'y' ]]; then
iptables -t nat -A POSTROUTING -s 10.8.0.0/24 ! -d 10.8.0.0/24 -j SNAT --to $IP iptables -t nat -A POSTROUTING -s 10.8.0.0/24 ! -d 10.8.0.0/24 -j SNAT --to $IP
sed -i "1 a\iptables -t nat -A POSTROUTING -s 10.8.0.0/24 ! -d 10.8.0.0/24 -j SNAT --to $IP" /etc/rc.local sed -i "1 a\iptables -t nat -A POSTROUTING -s 10.8.0.0/24 ! -d 10.8.0.0/24 -j SNAT --to $IP" /etc/rc.local
iptables -I FORWARD -s 10.8.0.0/24 -m conntrack --ctstate NEW -j ACCEPT
sed -i "1 a\iptables -I FORWARD -s 10.8.0.0/24 -m conntrack --ctstate NEW -j ACCEPT" /etc/rc.local
else else
iptables -t nat -A POSTROUTING -s 10.8.0.0/24 -j SNAT --to $IP iptables -t nat -A POSTROUTING -s 10.8.0.0/24 -j SNAT --to $IP
sed -i "1 a\iptables -t nat -A POSTROUTING -s 10.8.0.0/24 -j SNAT --to $IP" /etc/rc.local sed -i "1 a\iptables -t nat -A POSTROUTING -s 10.8.0.0/24 -j SNAT --to $IP" /etc/rc.local
iptables -I FORWARD -s 10.8.0.0/24 ! -d 10.8.0.0/24 -m conntrack --ctstate NEW -j ACCEPT
sed -i "1 a\iptables -I FORWARD -s 10.8.0.0/24 ! -d 10.8.0.0/24 -m conntrack --ctstate NEW -j ACCEPT" /etc/rc.local
fi fi
iptables -I FORWARD -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
sed -i "1 a\iptables -I FORWARD -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT" /etc/rc.local
# And finally, restart OpenVPN # And finally, restart OpenVPN
/etc/init.d/openvpn restart /etc/init.d/openvpn restart
# Try to detect a NATed connection and ask about it to potential LowEndSpirit # Try to detect a NATed connection and ask about it to potential LowEndSpirit