Unable to SSH via Internet

[showiproute]

Hello everyone,

I have moved from Ovirt on CentOS 7 to Promox recently - which was a really easy process.
So far everything runs better than before but unfortunately SSH is only working from one direction.

My server has two NICs: 1x LAN & 1x WAN (via a Fritzbox LAN).
I am able to reach Proxomox via the LAN side via a VPN tunnel but unfortunately not via the WAN interface althought ports are forwarded on the Fritzbox as well as SSH is set to listen to any interface (0.0.0.0).

Any ideas what else I could try?

 

[tim]

Is the firewall activated? (datacenter->firewall-options)

 

[showiproute]

Good evening tim,

no, Firewall is not active.