On Tue, Jul 12, 2011 at 02:26:34PM -0500, Paul Keusemann wrote: > On 07/07/11 14:39, Chuck Swiger wrote: > >On Jul 7, 2011, at 4:45 AM, Paul Keusemann wrote: > >>My setup is something like this: > >>- My local network is a mix of AIX, HP-UX, Linux, FreeBSD and Solaris > >>machines running various OS versions. > >>- My gateway / firewall machine is running FreeBSD-8.1-RELEASE-p1 with > >>ipfw, nat and racoon for the firewall and VPN. > >> > >>The problem is that rlogin, ssh and telnet connections over the VPN get > >>dropped after some period of inactivity. > >You're probably getting NAT timeouts against the VPN connection if it is > >left idle. racoon ought to have a config setting called natt_keepalive > >which sends periodic keepalives-- see whether that's disabled. > > > >Regards, > > Thanks for the suggestions Chuck, sorry it's taken so long to respond > but I had to reconfigure and rebuild my kernel to enable IPSEC_NAT_T in > order to try this out. > > One thing that I did not explicitly mention before is that I am routing > a network over the VPN.
Hi Paul, Even if you are not being NAT'd on the VPN there may be a firewall (or other active network component like a load balancer) with an overflowing state table somewhere at the remote end. We see this frequently where I work with customer networks and the firewall/VPN/network admin denies that its a time out issue so there is likely some device in the network that has a state table and if the connection is idle for a few minutes it gets dropped. Regards, Gary _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"
