Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

I have a PC-A at home behind a NAT router, and a PC-B at office also behind a NAT router. PC-B is setup as a PPTP server (with port-forwarding support from the router). PC-A is at subnet and PC-B also at

Currently, I can connect to PC-B from A via PPTP correctly. Connected, I can get access to every PC in the office outside PC-A's subnet, but everything inside gets routed to my LAN at home. In particular, as both routers are configured to listen at, I cannot use the office one as gateway even when connected via PPTP.

I'm afraid I can't get to change the IP of the gateway, but since PPTP is widely used to enable remote access, I believe there's a way to circumvent such a awkward IP conflict. (It should be something wrong with the routing table :(

This is what I get with route -n.         U     0      0        0 ppp0     U     2      0        0 wlan0 UH    0      0        0 ppp0     U     1000   0        0 eth0   U     1      0        0 eth0 UGH   0      0        0 ppp0 UH    0      0        0 ppp0
(pub address of my PPTP server) UGH   0      0        0 eth0
(pub address of my PPTP server) UGH   0      0        0 eth0
share|improve this question
Why not reconfigure your home system to a different subnet? –  ernie Oct 11 '13 at 16:37

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.