Port forwarding + martian source or allow direct incoming connections

[BlaatAap66 1]

I seem to be unable to get port forwarding working. Well, on AirVPN's side it seems to be working but locally the connection is denied because of a "martian source":

IPv4: martian source 192.168.1.2 from 2.3.4.5, on dev eth0

eth0 is my local interface behind a regular residential NAT (though in the DMZ). 2.3.4.5 is the ip I'm trying to connect from.

 

Is there any way to solve this?

 

Additionally, I would like to be able to connect to my wan ip directly, but that doesn't seem to be possible either.

 

This is my routing table:

 

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         10.4.0.1        128.0.0.0       UG    0      0        0 tun0
0.0.0.0         192.168.1.1     0.0.0.0         UG    0      0        0 eth0
10.4.0.0        0.0.0.0         255.255.0.0     U     0      0        0 tun0
128.0.0.0       10.4.0.1        128.0.0.0       UG    0      0        0 tun0
192.168.1.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0
213.152.161.x   192.168.1.1     255.255.255.255 UGH   0      0        0 eth0

 

I've just generated a standard ovpn file and ran openvpn file.opvn in the console as per instructions.

 

Any help would be appreciated!