[OpenAFS] rxtcp, rxutcp

Russ Allbery rra@stanford.edu
Thu, 30 Mar 2006 09:55:32 -0800

Jeffrey Altman <jaltman@secure-endpoints.com> writes:

> I have found that with the Linksys routers that SSH sessions drop after
> 10 or 15 minutes of being idle if the server decides it wants to send
> data to the client.  It may be that the NAT will allow the client to
> re-use the same external port if it sends data, but the mapping is
> certainly removed in the in-bound direction after a relatively short
> period of time.

SSH has a keep-alive option to work around this that keeps pinging the TCP
session every few minutes.  Maybe we could do something similar?  It would
require a bit more load on the server since the client would have to ping
and the server respond to refresh the NAT timeout.

Russ Allbery (rra@stanford.edu)             <http://www.eyrie.org/~eagle/>