Cisco VPN Tunnel Intermittently Connecting
Posted on 2011-02-14
I have 2 Cisco ASA 5505's set up for a vpn. One is a remote location. Last week the remote location started having a intermittent connection problem here at the central office. I have been on with Cisco support and the setup is correct on both routers. I have a second vpn tunnel that is functioning properly and hasn't seen any issues at all back to the central office. While on with Cisco support we have run packet captures and we see the packets going out and from both locations but they aren't always being received by the other location. Cisco suggested that it might be something to do with the ISP. We got them on a conference call and they said that there isn't anything that could be happening on there end. They said we could email them the packet captures but that doesn't mean anything can be done. This all started to occur when they had network problem. I was concerned that maybe our traffic might have been possibly being intercepted by I monitored over the weekend and didn't have any unusual traffic in my snort logs or my ntop. Traffic was non existent. So I'm kind of at a loss as well as Cisco Support also. We are going to redo the packet captures today and email to the ISP support but who knows they said it isn't them already. Could this possibly be a hardware issue? Cisco doesn't seem to think so.