Port Forwarding Problem

[Guest]

[bwibisono]

 Hi All,

Our company has branch that are connected to the  office by the internet. We installed endian as gateway, with 1.2.3.4 at the  office and 5.6.7.8 at the branch office.

Currently our web server (172.16.11.2) is already managed to NAT at 1.2.3.4. We intend to port forwarding in the branch office at 5.6.7.8, as a backup in case the  office’s link is offline.

However, we encountered a problem that the web server cannot be accessed using IP 5.6.7.8, the connection always loopback until the time is out.

Anyone has ever had the same experience?

Thank You.

[Syntax42]

In your port forwarding rule on Endian A, did you include the both the red and green interfaces as the incoming IP?

You would also be dealing with a double-NAT issue, which goes beyond my knowledge.  I can only suggest to go to Firewall -> Port Forwarding / NAT -> Source NAT, then add a rule for 0.0.0.0/0 source, green and possibly orange for destination, and all ports with auto source address.  The other firewall might require the same setup, or you may have to do something different due to double-NAT'ing.

[jamerson]

you need to allow on both endian green and red interfaces eth0 and eth1,
so both endian will listen to each others!