[nzlug] IPCop box retiring. Getting NetGear DG834 ADSL Router. Comments? Wise move?

[Volker Kuhlmann]

> >Some of them have less than desirable NAT implementations, however;
> >I've seen too many that decided TCP connections had vanished if they
> >saw no associated packets after a minute or two, which translates to
> >idle SSH sessions mysteriously dying.
> 
> For the record I fixed this by implementing a 'keepalive' every 30 
> seconds.  Works wonders.

Very old problem, very old solution. Using tcp-keepalive typically
doesn't work, those adsl shites will simply ignore those. You need
application layer keepalive. If you have new enough versions of openssh,
both server and client have a keepalive options, but older ones don't.
In that case, the program spinner does absolute wonders - you run it on
the client (automatic shell startup and killoff) and in configurable
intervals it pushes a null byte at the terminal.

Volker

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