nanog mailing list archives
Re: ASA log viewer
From: Duane Toler <detoler () gmail com>
Date: Sun, 20 Nov 2011 14:48:17 -0500
I think it was ASA 8.3 that began to provide an option to NOT cease functionality when tcp syslog server was unreachable. In ASDM, it is a checkbox at the bottom of the logging servers config section. Sent from my iPhone On Nov 20, 2011, at 7:43, 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
Current thread:
- Re: ASA log viewer, (continued)
- Re: ASA log viewer Jonathan Lassoff (Nov 19)
- Re: ASA log viewer Mike Lyon (Nov 19)
- Re: ASA log viewer Beavis (Nov 19)
- Re: ASA log viewer Jonathan Lassoff (Nov 19)
- Re: ASA log viewer Duane Toler (Nov 19)
- Re: ASA log viewer Jonathan Lassoff (Nov 19)
- Re: ASA log viewer Duane Toler (Nov 19)
- Re: ASA log viewer Duane Toler (Nov 19)
- Re: ASA log viewer Joel M Snyder (Nov 19)
- RE: ASA log viewer Joe Happe (Nov 20)
- RE: ASA log viewer jjanusze () wd-tek com (Nov 20)
- Re: ASA log viewer Duane Toler (Nov 20)
- Message not available
- Re: ASA log viewer Duane Toler (Nov 20)
- Re: ASA log viewer Jimmy Hess (Nov 20)
- Re: ASA log viewer PC (Nov 20)
- Re: ASA log viewer Duane Toler (Nov 21)
- RE: ASA log viewer Joe Happe (Nov 20)