Skip site navigation (1)Skip section navigation (2)
Date:      Thu, 25 Jul 2002 20:02:41 -0700 (PDT)
From:      Archie Cobbs <archie@dellroad.org>
To:        Dennis Pedersen <mlists@daydreamer.dk>
Cc:        freebsd-net@FreeBSD.ORG
Subject:   Re: mpd & ipfw (keep denying port 1900/udp?!)
Message-ID:  <200207260302.g6Q32fm93617@arch20m.dellroad.org>
In-Reply-To: <007f01c233c7$43aaa300$0301a8c0@dpws> "from Dennis Pedersen at Jul 25, 2002 12:37:24 pm"

next in thread | previous in thread | raw e-mail | index | archive | help
Dennis Pedersen writes:
> simply can get throug unless i flush my firewall rules.
> In the ipfw log i have the following entry (192.168.2.43 in the workstation
> on the inside of the fw i'm trying from and 2.88 in the internal interface
> in the fw)
> Jul 25 13:22:32 fw /kernel: ipfw: 900 Deny UDP 192.168.2.43:1067
> 192.168.2.88:1900 in via xl0
> Jul 25 13:22:57 fw /kernel: ipfw: 900 Deny UDP 192.168.2.43:1067
> 192.168.2.88:1900 in via xl0
> Jul 25 13:23:22 fw /kernel: ipfw: 900 Deny UDP 192.168.2.43:1067
> 192.168.2.88:1900 in via xl0
> 
> I don't get it, where does the UDP packet enter the picture? , in the fw
> rules i have allow gre from any to any and pptp from any to any (i have one
> rule that allows pptp port as src and one as dst).
> What am i missing here about the udp port?
> Is it always the same port ? (then i can simply just allow 1900/udp, but if
> i changes all the time that wont help me much..)

PPTP doesn't use UDP, so I have no idea what the UDP is from.
PPTP only uses TCP port 1723 and IP prototcol #47 (GRE).

Are you sure your firewall rules are not blocking something else
as well, but not logging it?

-Archie

__________________________________________________________________________
Archie Cobbs     *     Packet Design     *     http://www.packetdesign.com

To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-net" in the body of the message




Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200207260302.g6Q32fm93617>