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Date:      Sun, 16 Jun 2002 20:25:00 +1000
From:      Mark Hannon <markhannon@optusnet.com.au>
To:        kilowatt@cinci.rr.com, newbies@freebsd.org
Subject:   Re: dmesg TCP errors
Message-ID:  <3D0C677C.909A10D0@optusnet.com.au>
References:  <8DA46FC8-80EA-11D6-9B05-0003930AFE0E_cinci.rr.com@ns.sol.net>

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kilowatt@cinci.rr.com wrote:
> 
> I see the following in my dmesg, and I am utterly confused. Any ideas?
> 
> The box is running a 4.5 kernel. I also have a bit of a firewall -
> here's a link to my rc.firewall:
> http://spaceportbar.com/~dbesade/firewall
> 
> Here's what I'm seeing in dmesg (and this is only some of it :p ) :
> 

Hi,

127.0.0.1 is your loopback address, ports 113 and 512 are identd and
biff
respectively. Both of these messages are related to sendmail activity
that
is being blocked.

You shouldn't be filtering your loopback, I would suggest something like
this to get rid of those messages.

##################################################################
# Basic setup - enable loopback, block 127/8 from non-loopback
##################################################################
${fwcmd} add 100 pass all from any to any via lo0
${fwcmd} add 200 deny all from any to 127.0.0.0/8
${fwcmd} add 300 deny ip from 127.0.0.0/8 to any

The ::0001: are ipv6 addresses - I've never played with these so I
can't give you any advice.

Rgds/mark

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