OpenVPN Client Nat question?

Fire walls fayerwall at gmail.com
Wed Jun 24 19:33:30 UTC 2009


On Wed, Jun 24, 2009 at 11:43 AM, Torsten Kersandt
<torsten at cnc-london.net>wrote:

> -----Original Message-----
> From: owner-freebsd-pf at freebsd.org [mailto:owner-freebsd-pf at freebsd.org]
> On
> Behalf Of Fire walls
> Sent: 24 June 2009 16:53
> To: freebsd-pf at freebsd.org
> Subject: OpenVPN Client Nat question?
>
>  Hi people.
>
>  Working with pf, every day I'm understanding more pf.
>
>   I have openvpn at work running on gentoo, I add my openvpn in my home FW
> with freebsd 7.2, I setup everything and is working, I can reach my work
> network.
>
>   I read some sites on internet about this setup and they say something
> about NAT the openvpn network but doesn't explain if this must be done just
> in the server side or both sides, I mean server + client.
>
>   In my case I'm a client, I have to NAT my vpn network?
>
> nat on $ext_if from $vpn_network to any -> ($ext_if)
>
>   Or just need to play with the pass/block rules?
>
>  Thanks all for your time!!!
>
> --
> :-)
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>
> This is what I have got on my boxes
> Openvpn.conf:
> server 10.12.215.0 255.255.255.0
> ifconfig-pool-persist /usr/local/etc/openvpn/ipp.txt
>
> # Certificates for VPN Authentication
> ca /usr/local/etc/openvpn/keys/soundnet/ca.crt
> cert /usr/local/etc/openvpn/keys/soundnet/ca.crt
> key /usr/local/etc/openvpn/keys/soundnet/ca.key
> dh /usr/local/etc/openvpn/keys/soundnet/dh1024.pem
>
> # Routes to push to the client
> push "route 192.168.100.0 255.255.255.0"
> push "dhcp-option WINS 192.168.100.12"
> push "dhcp-option DNS 192.168.100.12"
> push "dhcp-option DNS 192.168.100.12"
> push "dhcp-option DOMAIN home"
>
> pf.conf
>        vpn_if="tun0"
>        vpn_network="10.12.215.0/24"
>
>      nat on $ext_if from $vpn_network to any -> ($ext_if)
>       nat on $int_if from $vpn_network to $int_net -> ($int_if)
>
>        pass in quick on $vpn_if
>        pass out quick
>
> regards
> Torsten
>
>
>
  Hi Torsten.

  Hey but this config is for the server side right?

  What questions is, if I have have to NAT to in the client side?

  Thanks for your quick answer!!!


-- 
:-)


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