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Date:      Fri, 3 Mar 2000 11:40:17 +0100 
From:      "Lowkrantz, Goran" <Goran.Lowkrantz@infologigruppen.se>
To:        "'Marc Silver'" <marcs@is.co.za>, "Lowkrantz, Goran" <Goran.Lowkrantz@infologigruppen.se>
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   RE: Attach to server on FW breaks
Message-ID:  <B500F74C6527D311B61F0000C0DF5ADC0D4A03@valhall.ign.se>

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Hi Mark,

01300 allow tcp from any to any established

I have the line you refer to. Its before the one that I added for the server
(03900).

Cheers,
	GLZ

> -----Original Message-----
> From: Marc Silver [mailto:marcs@is.co.za]
> Sent: Friday, March 03, 2000 11:36 AM
> To: Lowkrantz, Goran
> Cc: freebsd-questions@FreeBSD.ORG
> Subject: Re: Attach to server on FW breaks
> 
> 
> Have you got something like this in your firewall config?
> 
> # Allow TCP through if setup succeeded
> $fwcmd add pass tcp from any to any established
> 
> This is taken from /etc/rc.firewall.  What it sounds like to me (and I
> could be wrong) is that the connection is being accepted and then
> afterwards the packets are being truncated by the firewall because you
> don't have that line in.
> 
> Try it and hopefully it will work.
> 
> Cheers,
> Marc
> 
> On Fri, Mar 03, 2000 at 10:34:36AM +0100, Lowkrantz, Goran wrote:
> > 
> > I am totaly at loss with this, just don't understand why it 
> does not work
> > and can't find anything in the archives. Please enlighten me.
> > 
> > I have a FW based on FreeBSD 3.4-STABLE with ipfw. On this 
> I try to run a
> > server listening to the external interface. I have added 
> the following rule:
> > 
> > allow log tcp from X.X.X.X to Y.Y.Y.Y Z setup
> > 
> > When connecting, I get the following entry in the log:
> > 
> > Mar  3 10:03:22 ns2 /kernel: ipfw: 3900 Accept TCP 
> X.X.X.X:13955 Y.Y.Y.Y:Z
> > in via xl0
> > 
> > and they both wait for the client to send the first data. 
> On the first send
> > from the client, the connection is broken and the server 
> receives an EOF.
> > 
> > I have the server in hosts.allow and even tested with an 
> ALL:ALL:allow first
> > rule but it's the same either way. And yes, rebooted 
> between test to make
> > sure it was seen.
> > 
> > I just don't understand whats happening, as the filterline 
> before this is
> > the smtpd accept line, looking like this
> > 
> > allow log tcp from any to Y.Y.Y.Y 25 setup
> > 
> > and it works!
> > 
> > I need new ideas!! 
> > 
> > Cheers,
> > 	GLZ
> > 
> > ---
> > Goran Lowkrantz         Email    : 
> goran.lowkrantz@infologigruppen.se
> > Infologigruppen Alfa AB Telephone: Nat    070-587 8782 Fax: 
> Nat    070-615
> > 8782
> > Box 202                            Int +46 70-587 8782      
> Int +46 70-615
> > 8782
> > 941 25 Pitea,  Sweden   
> > 
> > 
> > To Unsubscribe: send mail to majordomo@FreeBSD.org
> > with "unsubscribe freebsd-questions" in the body of the message
> 
> -- 
> 
> Marc Silver
> IS Hosting Infrastructure
> The Internet Solution
> Tel: (+27 11) 283 5500
> Fax: (+27 11) 283 5001 
> E-mail: marcs@is.co.za 
> Web: www.is.co.za
> 


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