I have a vigor 2900Gi, around 20 PCs on a LAN behind, NAT running.

All 20 PCs are hitting a single corporate webmail site, and also running Outlook anywhere (over http).

Every now and again, we will get to a situation where some machines can access their email and webmail, and "randomly" some cannot (when they worked perfectly well earlier).

Viewing the NAT active sessions table, I can see exactly 100 sessions running to this single IP address in their corporate network (from all 20 odd PCs).

This seemed a particularly round number - so a bit of digging revealed that some Drayteks have NAT session limits (and the default, when it is enabled, is - wait for it - 100 sessions!)

Now this 2900Gi does NOT have this option in the GUI. And when I refer to the telnet guide for the CLI, the options I want to set (ip session default 500) or even "off" are not supported in the telnet session.

Does anyone have any idea how to turn off this session limit with the GUI or CLI option there? Seems a shame to replace the router when this is the only issue they have.

Cheers
Kevin