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Forum Discussion

bofh_32498's avatar
bofh_32498
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Nov 17, 2008

linux client hangs up (ubuntu 8.10)

I have the strangest problems connecting my Ubuntu 8.10 with firefox 3 successfully.     1st Problem is the connection device:   - Internal connection (using eth0 over the intranet all...
BIG-IP Access Policy Manager (APM)
remote access
security
mal_57091's avatar
mal_57091
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Nov 21, 2008
Hi There,

 

 

It looks like you hit a DPD timer (Dead Peer Detection). FirePass uses SSL encrypted PPP connections. PDP is doing using LCP-echo packets over the PPP connection between the client and the FirePass. FirePass will send one LCP-echo every 30 seconds and upon four un-acknowledge LCP-echo's (2 minutes) will consider the peer dead and reap the connection.

 

 

The best way to troubleshoot this (in my experience) is run a TCPDump on the actual PPP interface (e.g.: tcpdump -s0 -i pppX) created by FirePass and look for the LCP-echo and responses. Hopefully from here you should be able to figure this one out.

 

 

Cheers,

 

Mal