kern/103967: ipfw2 limit src-addr logging is not sufficient for
debug
Oleg Gawriloff
barzog at telecom.by
Wed Oct 4 02:50:15 PDT 2006
>Number: 103967
>Category: kern
>Synopsis: ipfw2 limit src-addr logging is not sufficient for debug
>Confidential: no
>Severity: non-critical
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: change-request
>Submitter-Id: current-users
>Arrival-Date: Wed Oct 04 09:50:13 GMT 2006
>Closed-Date:
>Last-Modified:
>Originator: Oleg Gawriloff
>Release: 4.11/5.3
>Organization:
Atlant Telecom
>Environment:
FreeBSD martin.telecom.by 4.11-RELEASE-p12 FreeBSD 4.11-RELEASE-p12 #3: Tue Dec 20 09:30:16 EET 2005 root at martin.telecom.by:/usr/obj/usr/src/sys/MARTIN i386
>Description:
When ipfw rule ipfw add 20 allow tcp from me to any limit src-addr 2 is in effect kernel log it as
Oct 4 12:34:48 martin /kernel: drop session, too many entries
which is not sufficient to diagnose problem. At
http://cvs.freebsd.uwaterloo.ca/twiki/bin/view/Freebsd/StatefulFirewalling
located patch which solves this problem (i.e. after patch log entries looks like @drop session 129.97.20.165:1026 -> 129.97.20.200:23, TOO many entries") which is far more preferable than current behaviour.
>How-To-Repeat:
Just test limit src-addr rule and view log output
>Fix:
http://www.freebsd.uwaterloo.ca/ip_fw2.patch
>Release-Note:
>Audit-Trail:
>Unformatted:
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