ASA log viewer

Joe Happe Joe.Happe at
Sun Nov 20 06:42:42 CST 2011

Completely agree with splunk for log searching / analysis, even has some ASA/PIX modules.  Please note, unless something has changed that I completely missed, an ASA/PIX will stop forwarding user traffic if it is configured for tcp syslogs and the connection breaks.  (no more disk, network issue, etc) This is based on the premise that a system cannot be considered secure if the audit trail is unavailable, and tcp syslogging(vs udp) is usually used to make sure you don't miss an entry due to a dropped packet.  Something that dates back to the old C2 security standard??(not sure of the current version).   Typically this requires admin intervention (by design) to clear the condition.   If you use udp for syslog the ASA won't be in this mode, and you won't block traffic if syslog fails.  With that said, there may be a command I'm unaware of that allows a tcp syslog to fail and not block traffic.  


-----Original Message-----
From: Joel M Snyder [mailto:Joel.Snyder at Opus1.COM] 
Sent: Sunday, November 20, 2011 12:11 AM
To: nanog at
Subject: Re: ASA log viewer

 >I'd like to fully search on an 'column', a la 'ladder logic' style.,  >as well as have the data presented in an orderly well-defined fashion.

Yes, Splunk.


for a recent Network World test of Splunk which may help.


Joel M Snyder, 1404 East Lind Road, Tucson, AZ, 85719
Senior Partner, Opus One       Phone: +1 520 324 0494
jms at Opus1.COM      


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