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Date:      Thu, 24 Jan 2002 12:55:08 -0600
From:      Eric Anderson <anderson@centtech.com>
To:        dr3node <rtfm@webburo.ru>
Cc:        freebsd-security@freebsd.org
Subject:   Re: Can't set up an IPsec tunnel.
Message-ID:  <3C50588C.7200324B@centtech.com>
References:  <200201241847.AHX10883@vmms1.verisignmail.com>

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

Eric


dr3node wrote:
> 
> 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.
> 
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> with "unsubscribe freebsd-security" in the body of the message

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Eric Anderson	 anderson@centtech.com    Centaur Technology
If at first you don't succeed, sky diving is probably not for you.
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