SSH and Telnet sessions connection issues...

[#1]

Hello! I have one FG-400 as my main FireWall and two FG-50A connected with ADSL. The VPN connection for each 50A are working fine but when I open a connection to any server that I have behind the FG400 the connection is drop almost immediately. Policies for VPN are at the top, ping server working fine, I change default_ttl value and still does not work. I notice this problem after upgrading to the latest Firmware (2.80,build359). Any idea or suggestion? Thanks in advanced for any help!

[UkWizard]

Check you dont have NAT enabled on any of the encrypt policies.

[#3]

Hello UkWizard and thanks for your reply! I' m a little confuse since there are no way to put NAT on this policy. Is this something that I can check from the command line?

[UkWizard]

on the encrypt policies themselves you have the following options; Inbound NAT Outbound NAT make sure they are disabled.

[#5]

Yes, those two options are off, just Allow Inbound and Allow outbound are on.

[UkWizard]

When you say " almost immediately dropped" , how long is this roughly.

[#7]

Hi, I have the same problem. VPN-connection between 2 FGT50A are working well. But using telnet over VPN causes connection loss. I' d recognised that the timeout / connection loss - at our VPN - was every 120 seconds. I was able to watch this in the session-table in the webinterface. But I can' t find a parameter to set the timeout of 120 to higher values. At the moment working over telnet isn' t able, because of the low timeout setting :((( p.s.: I' m using Fortigate-50A 2.80,build359