We connect to other branch offices using a Cisco VPN concentrator (Cisco Systems, Inc./VPN 3000 Concentrator Version 4.7.2.C Nov 30 2005
00:19:31). I am having trouble with LAN-2-LAN connectivity with a PIX (I don't know the version or particulars on that device). The tunnel can be established but is disconnected every 15-30 seconds, after which time it comes back up on its own. No traffic, though, has been able to pass through that tunnel. I maintain no NATs that would affect any of the addresses for this tunnel. The other party, however, is NAT-ing their privately addressed host to a public address. I include this here because I found a German forum that referenced my exact error message and that spoke of NATs and nat traversal. The errors that I am seeing in my concentrator's log are as follow:Nov 16 08:50:50 searchbridge-priv 7249 11/16/2006 08:48:32.180 SEV=4 AUTH/22 RPT=10408 216.54.170.100 User [public ip address] Group [public ip address] connected, Session Type: IPSec/LAN-to-LAN Nov 16 08:50:50 searchbridge-priv 7251 11/16/2006 08:48:32.180 SEV=4 AUTH/84 RPT=10408 LAN-to-LAN tunnel to headend device public ip address connected Nov 16 08:51:22 searchbridge-priv 7450 11/16/2006 08:49:04.200 SEV=4 AUTH/23 RPT=10398 public ip address User [public ip address] Group [public ip address] disconnected: duration: 0:00:32
The public IP address is always the peer address of the PIX. Thanks in advance. Elinor