I was trying to setup OpenVPN on my Debian Wheezy server for the last 4 days. After a lot of mess ups and after some runs at the office to re-enable the firewall rulles since I managed to lock myself out from the remote desktop several times, I now managed to fix this.
For some reason Bastille wouldn't accept the following rules manually:
iptables -A INPUT -i tun+ -j ACCEPT
iptables -A FORWARD -i tun+ -j ACCEPT
iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
iptables -t nat -A POSTROUTING -s 10.8.0.0/24 -o eth0 -j MASQUERADE
Although these commands would work without Bastille enabled, they wouldn't if it was enabled. No error was received and the rules were getting inserted in the iptables but Bastille would just ignore them.
The solution was simple afterall:
Save and exit the file.
Restart the firewall:
Is that suppose to happen? Aren't we supposed to be able to insert rules ourselves even when Bastille is enabled? I know that we can add ports through the web interface but how do we add a NAT rule properly?