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I have a Ubuntu server (Ubuntu 10.04.4 LTS) acting as a gateway to my home network. I set up a VPN connection with the linux-pptp client and now have it as an interface on my home server.

ppp0      Link encap:Point-to-Point Protocol  
          inet addr:xx.x.xxx.xxx  P-t-P:  Mask:
          RX packets:6 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:3 
          RX bytes:60 (60.0 B)  TX bytes:66 (66.0 B)

Now I want to route one client in the network with a static IP through this connection instead of the default gateway. I tried to set it up via the route command, but it does not work. My current routes:

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface     *      UH    0      0        0 ppp0        *      UH    0      0        0 ppp0
87.xxx.xxx.xx   st.ip  UGH   0      0        0 eth1     *        U     0      0        0 eth2     *        U     0      0        0 eth1
default         st.ip          UG    100    0        0 eth1
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What do you mean when you say "routed through a proxy?" A proxy is something you would normally configure in application settings - SOCKS or HTTP, whereas routing is something that defines the next hop for a packet. –  Paul Jun 24 '12 at 11:38
I want to rout all traffic form one client in the network through a external proxy. I can't set the configuration at the client, so I have to do it at the on the gateway server. –  wowpatrick Jun 24 '12 at 11:46
What kind of proxy is it? –  Paul Jun 24 '12 at 11:52
HTTP proxy. I'll update the question. Would VPN be easier? I have control over both machines ... –  wowpatrick Jun 24 '12 at 14:02

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