Computers periodically pinging the server through VPN?!
I have a Cisco PIX router/firewall, an SBS server sitting behind it, and a VPN tunnel from router to another remote site router.
Why do the computers in the remote site periodically ping the SBS server?? Is it normal?
messages.PNG
Why do the computers in the remote site periodically ping the SBS server?? Is it normal?
messages.PNG
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its on the same subnet. Is the response coming from the remote site?
Again, this is just what an IDS/IPS log will show. I have seen this before. You can stop it by removing echo-reply and timestamps.
Run wireshark on your switch that the PIX is on and see if you can see how large the TCP packets are. I will almost bet my paycheck that they are ICMP fragments as this is the way that Group Policy performs it's slow link detection or whether or not to send the GP at all. If this is down then the GP will not be applied and 90 minutes later the remote site will have a partial replica of the GC.
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thanks guys, that's what I thought - slow link detection. I have disabled it through GP and no more icmps.
Glad that took care of it.
I would think some monitoring program or similar is installed on the server (maybe router traffic monitoring). IF you have access to the server, you should have a look what applications are running on the server causing the unnecessary ping traffic to the router..