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Date:      Thu, 24 Jan 2002 13:01:31 -0700
From:      Nate Williams <nate@yogotech.com>
To:        anderson@centtech.com
Cc:        dr3node <rtfm@webburo.ru>, freebsd-security@FreeBSD.ORG
Subject:   Re: Can't set up an IPsec tunnel.
Message-ID:  <15440.26651.603917.777527@caddis.yogotech.com>
In-Reply-To: <3C50588C.7200324B@centtech.com>
References:  <200201241847.AHX10883@vmms1.verisignmail.com> <3C50588C.7200324B@centtech.com>

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> IPSEC won't work through masquarading boxes or NAT firewalls.

Not easily, anyway.  You have to do special things to make it work
through NAT, like double-encapsulating it.



Nate

> > i've read everything i could find.
> > that is the latest try:
> > Remote host:
> > 
> > ifconfig gif0 create tunnel 222.222.22.2 111.111.11.1
> > ifconfig gif0 inet 222.222.22.2 192.168.0.1 netmask 0xffffff00
> > setkey -FP
> > setkey -F
> > ipsec.conf:
> > //
> > spdadd 0.0.0.0/0 192.168.0.0/24 any -P out ipsec
> > esp/tunnel/222.222.22.2-111.111.11.1/require;
> > spdadd 192.168.0.0/24 0.0.0.0/0  any -P in ipsec
> > esp/tunnel/111.111.11.1-222.222.22.2/require;
> > //
> > + racoon with the keys in /usr/local/etc/racoon/psk.txt
> > setkey -f /etc/ipsec.conf
> > 
> > Local gateway:
> > 
> > ifconfig fxp0 111.111.11.1 netmask 0xffffffff alias
> > ifconfig gif0 create tunnel 111.111.11.1 222.222.22.2
> > ifconfig gif0 inet 192.168.0.1 222.222.22.2 netmask 0xffffff00
> > setkey -FP
> > setkey -F
> > 
> > ipsec.conf:
> > //
> > spdadd  192.168.0.0/24 0.0.0.0/0 any -P out ipsec
> > esp/tunnel/111.111.11.1-222.222.22.2/require;
> > spdadd 0.0.0.0/0 192.168.0.0/24 any -P in ipsec
> > esp/tunnel/222.222.22.2-111.111.11.1/require;
> > //
> > 
> > + racoon with the keys in /usr/local/etc/racoon/psk.txt
> > setkey -f /etc/ipsec.conf
> > and the connection on the gate drops down.
> > the error is: /kernel: gif_output: recursively called too many times(2)
> > 
> > i'm wondering what if any troubles because of that RedHat gate with the
> > masquarade or because of my stupidy.
> > 
> > To Unsubscribe: send mail to majordomo@FreeBSD.org
> > with "unsubscribe freebsd-security" in the body of the message
> 
> -- 
> ------------------------------------------------------------------
> Eric Anderson	 anderson@centtech.com    Centaur Technology
> If at first you don't succeed, sky diving is probably not for you.
> ------------------------------------------------------------------
> 
> To Unsubscribe: send mail to majordomo@FreeBSD.org
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