Problems since updating DSE Router firmware to Release 10 version 2

[Jamie Dobbs]

Whenever I SSH into a PC on my network from an external source (eg. work)
the connection appears to timeout after a short period with no traffic.
If I am continuously using the link it is fine, but as soon as a pause for
more than about 10 seconds the session locks up (I am assuming it is
timing out).
Does anyone know what might be causing this? I have a dig around in the
router and firewall setup on the router but can't seem to find anywhere
that has a timeout value. It is worth noteing that this does not appear to
happen with HTTP connections, only SSH.

[Russell Fulton]

Post by Jamie Dobbs
Whenever I SSH into a PC on my network from an external source (eg. work)
the connection appears to timeout after a short period with no traffic.
If I am continuously using the link it is fine, but as soon as a pause for
more than about 10 seconds the session locks up (I am assuming it is
timing out).
Does anyone know what might be causing this? I have a dig around in the
router and firewall setup on the router but can't seem to find anywhere
that has a timeout value. It is worth noteing that this does not appear to
happen with HTTP connections, only SSH.

Hmmm... possibly NAT timeout (although 10 secs seems rather short).
Recent version of Openssh have both server and client heartbeat or
keepalive options so you can set them up to send a nop every so many
seconds. I think Putty has the same option.

The nat timeout on my dlink router is 5 minutes and I can't change it so
I set up my ssh client with a keepalive of 250 seconds and I've had
sessions up for days at a time.

Russell