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Old 06-20-2003, 10:30 AM   #1
g_goblin
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Registered: Oct 2002
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tcpdump and bridging protocol


Hey all,

I don't know if this is the correct forum for this but here goes.

I have a script which gets executed periodically to run tcpdump on the out interface of my firewall. The router I have came with my dsl connection and uses the bridging protocol to translate my external ip's to the ip's on my firewall.

Does anyone now how to filter this protocol out with tcpdump?

Here is a short dump of what my router spits out:

10:26:01.841709 802.1d config 8000.00:20:6f:0f:2d:4a.0000 root 8000.00:20:6f:0f:2d:4a pathcost 0 age 0 max 20 hello 2 fdelay 15
10:26:03.862163 802.1d config 8000.00:20:6f:0f:2d:4a.0000 root 8000.00:20:6f:0f:2d:4a pathcost 0 age 0 max 20 hello 2 fdelay 15
10:26:05.882549 802.1d config 8000.00:20:6f:0f:2d:4a.0000 root 8000.00:20:6f:0f:2d:4a pathcost 0 age 0 max 20 hello 2 fdelay 15
10:26:07.902987 802.1d config 8000.00:20:6f:0f:2d:4a.0000 root 8000.00:20:6f:0f:2d:4a pathcost 0 age 0 max 20 hello 2 fdelay 15
10:26:09.923451 802.1d config 8000.00:20:6f:0f:2d:4a.0000 root 8000.00:20:6f:0f:2d:4a pathcost 0 age 0 max 20 hello 2 fdelay 15
10:26:11.943766 802.1d config 8000.00:20:6f:0f:2d:4a.0000 root 8000.00:20:6f:0f:2d:4a pathcost 0 age 0 max 20 hello 2 fdelay 15

Any help would be appreciated
 
Old 06-20-2003, 02:35 PM   #2
unSpawn
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Archivos del mailinglist del CERT
 
Old 06-20-2003, 09:49 PM   #3
g_goblin
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thanks that worked
 
  


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