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Date:      Wed, 27 Feb 2008 12:53:01 +0000
From:      Anton Shterenlikht <mexas@bristol.ac.uk>
To:        Mel <fbsd.questions@rachie.is-a-geek.net>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: SOLVED: Re: IPMON log to syslog doesn't work
Message-ID:  <20080227125301.GA82852@mech-aslap33.men.bris.ac.uk>
In-Reply-To: <200802261826.23184.fbsd.questions@rachie.is-a-geek.net>
References:  <20080226132032.GA86468@mech-aslap33.men.bris.ac.uk> <20080226150113.GA87235@mech-aslap33.men.bris.ac.uk> <20080226163127.GA88231@mech-aslap33.men.bris.ac.uk> <200802261826.23184.fbsd.questions@rachie.is-a-geek.net>

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On Tue, Feb 26, 2008 at 06:26:22PM +0100, Mel wrote:
> On Tuesday 26 February 2008 17:31:27 Anton Shterenlikht wrote:
> > On Tue, Feb 26, 2008 at 03:01:13PM +0000, Anton Shterenlikht wrote:
> > > On Tue, Feb 26, 2008 at 03:42:51PM +0100, Mel wrote:
> > > > On Tuesday 26 February 2008 15:25:37 Anton Shterenlikht wrote:
> > > > > On Tue, Feb 26, 2008 at 03:09:14PM +0100, Mel wrote:
> > > > > > On Tuesday 26 February 2008 14:20:32 Anton Shterenlikht wrote:
> > > > > > > I'm trying to troubleshoot my ipfilter firewall, and I cannot get
> > > > > > > any log data, i.e. /var/log/ipfilter.log is empty.
> >
> > I solved it following the IPF FAQ:
> > 	http://www.phildev.net/ipf/IPFipmon.html#ipmon1
> >
> > 	Q. I have IPMon logging to syslog, but syslog doesn't
> > 	   log anything, why not?
> >
> > 	A. IPF logs as local0 so you'll want something to the effect of:
> > 	   local0.debug /var/log/ipf.log in your syslog.conf.
> > 	   NOTE: There has to be atleast one TAB in that line, not just spaces.
> >
> > so I changed "security.*" to "local0.*" in /etc/syslog.conf:
> >
> > # grep local0 /etc/syslog.conf
> > local0.*        /var/log/ipfilter.log
> > #
> >
> > and now I have (lots) of logs in the log file:
> >
> > # tail -2 /var/log/ipfilter.log
> > Feb 26 16:20:05 mech-cluster238 ipmon[24166]: 16:20:05.248083 2x dc0 @0:20
> > b 137 .222.187.85,137 -> 137.222.187.255,137 PR udp len 20 78 IN broadcast
> > Feb 26 16:20:07 mech-cluster238 ipmon[24166]: 16:20:06.876597 dc0 @0:21 b
> > 137.22 2.187.10,138 -> 137.222.187.255,138 PR udp len 20 212 IN broadcast #
> >
> > # ls -al /var/log/ipfilter.log
> > -rw-r-----  1 root  wheel  74889 26 Feb 16:21 /var/log/ipfilter.log
> > #
> >
> > But now I wonder if the FBSD handbook has an error in section
> > 28.5.7 IPMON Logging:
> >
> > 	"Add the following statement to /etc/syslog.conf:
> > 		security.* /var/log/ipfilter.log
> >
> > 	 The security.* means to write all the logged
> > 	 messages to the coded file"
> >
> > Shall I submit this as a manual error, or is it more complex?
> 
> I was just looking at that. The weird thing is the following:
> http://www.freebsd.org/cgi/cvsweb.cgi/src/contrib/ipfilter/tools/ipmon.c?rev=1.4.2.2
> #ifndef	LOGFAC
> #define	LOGFAC	LOG_LOCAL0
> #endif
> 
> In the contrib/ipfilter/Makefile it is set to security, but...freebsd builds 
> with src/sbin/ipf/ipmon and there it is indeed LOG_LOCAL0.
> 
> So either you could request docfix or Makefile fix. There's probably a reason 
> why it's set hardcoded like that to LOG_LOCAL0.

I reported this handbook error to the freebsd-doc list.

I also noted that the ipmon man page does say that the default facility
is local0, but it can be changed with -L <facility>. I tried this but
it doesn't seem to work:

# ps ax|grep ipmon
27199  ??  Ss     0:00.11 /sbin/ipmon -sDn -L security
27245  p0  R+     0:00.01 grep ipmon
#

so it is working, but no new messages appear in the log. With local0
I get several messages a minute. 

-- 
Anton Shterenlikht
Room 2.6, Queen's Building
Mech Eng Dept
Bristol University
University Walk, Bristol BS8 1TR, UK
Tel: +44 (0)117 928 8233 
Fax: +44 (0)117 929 4423



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