[ale] Tunnel presistence connection issue

Stephan Uphoff ups at tree.com
Thu Feb 24 15:21:32 EST 2005


On Thu, 2005-02-24 at 10:11, Christopher Fowler wrote:
> I'm using Vtun at a remote site and am running pppd inside my tunnel. 
> The remote site has Time Warner Cable as their provider.  After a few
> minutes of inactivity across the tunnel, the tunnel seems to lock up. 
> No data can go between the two machines.  Its as if something in between
> stopped the flow of traffic.  Eventually the tunnel will time out at the
> other end and close down and start a new one.  Out of 20+ sites this is
> the only site that does this.  Its also the only site using cable modem.
> Does anyone know what could be causing this?
> 
> Chris

Looks like a firewall (or nat router) issue to me.
( State information timing out due to inactivity)
PPP can test the link with ppp echo packets. (No need for IP pings)
This should keep our connection busy and alive.




More information about the Ale mailing list