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pyxel
n00b
Joined: 04 Nov 2005
Posts: 44
Location: Bratislava/brussels
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 Posted: Fri Jun 08, 2007 7:36 pm Post subject: NAT through VPN |
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Hello all,
In my work we are using CISCO phones on local lan. Now, I have my personal server at home connected to the VPN,, I puted in an additional network card. In fact I need to put this phone on the VPN:
| Code: |
[CISCO ROUTER IN OFFICE]..... |VPN via INTERNAT| .... |eth1 (vpn device) --- eth0 (connected to the phone)| .... |phone|.
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Now, I have configured the phone correct, it has a local IP address, but the only thing I need it connect it to VPN. Can someone tell me how? Using iptables I guess, but I'm not able to find the rules that work. Please advice. |
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SiberianSniper
Guru
Joined: 06 Apr 2006
Posts: 381
Location: Dayton, OH, USA
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| Posted: Fri Jun 08, 2007 7:47 pm Post subject: |
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If you have iptables all set up in your kernel (with NAT, POSTROUTING, MASQUERADING, all that good stuff), you should be able to do this:
| Code: | emerge iptables
iptables --flush
iptables --table nat --flush
iptables --delete-chain
iptables --table nat --delete-chain
iptables --table nat --append POSTROUTING --out-interface eth1 -j MASQUERADE
iptables --append FORWARD --in-interface eth0 -j ACCEPT
echo 1 > /proc/sys/net/ipv4/ip_forward |
One word of warning, I'm not sure if it still does or not, but I've seen Cisco's VPN client disable all other net devices on a computer, so eth0 might not work. If you run into that, I'd recommend using vpnc instead. |
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Networking & Security
