Forward port on DD-WRT besides AirVPN

[rikkert 0]

I have successfully set up an AirVPN client in my DD-WRT router; every connected device now connects to the internet via AirVPN.

 

However, I would like to access a single port on a server I have running from outside my network.

 

My IPTABLES rules are as follows:

 

#All traffic trough VPN tunnel

iptables -I FORWARD -i br0 -o tun0 -j ACCEPT

iptables -I FORWARD -i tun0 -o br0 -j ACCEPT

iptables -I INPUT -i tun0 -j REJECT

iptables -t nat -A POSTROUTING -o tun0 -j MASQUERADE

#Forward port [port] for server

iptables -t nat -I PREROUTING -p tcp -i br0 --dport [port] -j DNAT --to [server IP]:[port]

iptables -I FORWARD -p tcp -d [server IP] --dport [port] -j ACCEPT

 

Unfortunately I can't connect to the server from outside. The DD-WRT firewall log shows drops for the port [port].

 

Could anyone help me out?