nanog mailing list archives

RE: ASA log viewer


From: "jjanusze () wd-tek com" <jjanusze () wd-tek com>
Date: Sun, 20 Nov 2011 09:23:29 -0500 (EST)

The logging host command enables a secure connection via TLS, and to configure
use of a TCP port for logging.


     e.g.,  interface_name syslog_ip[tcp/port] [emblem format] [secure]


Also, when you do a sho log, do you have the following set?


     Deny Conn when Queue Full: disabled

 



On November 20, 2011 at 7:42 AM Joe Happe <Joe.Happe () archlearning com> wrote:

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. 

~jdh

-----Original Message-----
From: Joel M Snyder [mailto:Joel.Snyder () Opus1 COM]
Sent: Sunday, November 20, 2011 12:11 AM
To: nanog () nanog org
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.

See:
http://www.networkworld.com/reviews/2011/092611-splunk-test-250836.html

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

jms


--
Joel M Snyder, 1404 East Lind Road, Tucson, AZ, 85719
Senior Partner, Opus One       Phone: +1 520 324 0494
jms () Opus1 COM                http://www.opus1.com/jms

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