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Date:      Thu, 02 Mar 2006 16:11:16 -0300
From:      Tiago Cruz <tiagocruz@forumgdh.net>
To:        "Travis H." <solinym@gmail.com>
Cc:        Greg Hennessy <Greg.Hennessy@nviz.net>, freebsd-pf@freebsd.org
Subject:   Re: Dirty NAT tricks
Message-ID:  <1141326676.9163.5.camel@localhost.localdomain>
In-Reply-To: <d4f1333a0602230336t5d29532fp704af80b67e58cfb@mail.gmail.com>
References:  <1140612265.5617.25.camel@localhost.localdomain> <000001c637b3$a54b0a70$0a00a8c0@thebeast> <d4f1333a0602230336t5d29532fp704af80b67e58cfb@mail.gmail.com>

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Hello Guys,

On Thu, 2006-02-23 at 05:36 -0600, Travis H. wrote:

> As Brian Candler pointed out, you can do this with a binat to a
> fictitious network on the client, then a binat back on the VPN server.
>  I don't know what he means by "reversing the in/out sense", as binat
> is bidirectional.

I did a lot of things in the last week:

-> My LAN is 192.168.0.0/22

-> OpenVPN, route to clients:
push "route 192.168.10.0 255.255.255.0"

-> PF rules:
binat on $vpn_if from 192.168.10.0/24 to any -> 192.168.0.0/24
binat on $vpn_if from 192.168.0.0/24 to any -> 192.168.10.0/24

In the notebook client, when I try to ping 192.168.10.19 (in the true,
is the 192.168.0.19):

15:56:56.197170 IP 10.8.0.6 > 192.168.10.19: ICMP echo request, id 512, seq 5121, length 40
15:56:56.197779 IP 192.168.0.19 > 10.8.0.6: ICMP echo reply, id 512, seq 5121, length 40

My first ping  is E.O.K (TTL=126) but all the others I don't have reply
(75% lost).

Can somebody help me?

Many thanks

-- 
Tiago Cruz
http://linuxrapido.org





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