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ICMP traffic in firewall logs

Posted on 2014-01-23
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Last Modified: 2014-02-04
Hi,
I am reviewing firewall logs and I am trying to understand this line.


Jan 18 10:08:39 logapps %ASA-6-303021: Teardown ICMP connection for faddr 141.000.100.2/0 gaddr 141.000.63.159/0 laddr 141.000.63.159/0


What does the faddr / gaddr and laddr mean?  Since it is a ping, one is the initator of the ping, the current address and the final address.... is that correct?

Thanks!
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Question by:NYGiantsFan
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8 Comments
 
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SvenIA earned 250 total points
ID: 39803594
foreign address (one not in control by this ASA/router)

global address (after NAT)

local address (pre NAT)

So you are correct.....
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Expert Comment

by:Miftaul
ID: 39803629
Scott says This
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by:SvenIA
ID: 39803642
@Miftaul

Isn't that exactly the same as what i posted?
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Author Comment

by:NYGiantsFan
ID: 39803753
The foreign address originated with our network?  Or is this nated.

What is the different between the global address and the local address?  They are appearing as the same.   Thanks.
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Expert Comment

by:Miftaul
ID: 39803785
@SvenIA, yes thats it. I am on mobile, screen doesn't refresh. I didn't notice your comment earlier.
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by:Miftaul
Miftaul earned 250 total points
ID: 39803921
global address and the local address could be same when you are pinging from within ASA.
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Expert Comment

by:amatson78
ID: 39808967
Sounds like that faddr might be a VPN address which is why it shows internal, do you run a VPN on that range?
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Author Closing Comment

by:NYGiantsFan
ID: 39832933
Thanks!
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