I'm trying to interconnect two private network with possibles addresses in the same netmask with the help on a proxy machine with two interfaces example in the first network i have a client with IP address in 10.34.248.134 ( class C ) and i try to reach a server on the other private network with an IP address 10.10.254.12 . My problem is With iptables and nat , it is possible to replace the address of clients with the address of the proxy . But my purpose is to replace the client address in the proxy partially So i want to have a partial replacement on the input So the addresse 10.34.248.134 is changed in 154.34.248.134 by the nat . Therefore i want to change only the first byte of the client address . In my machine proxy i have squid to requests on http, https , ftp under http and i have delegate to requests on another protocols or like "proxy socks" So to manage the routes , i just need that the clients address be changed beetwen the entry on the machine and the proxy service . Like this the route on the proxy machine are simplified because the requests destinated to server are routed on the interface ( route by default ) . And all the request that are done by clients are routed on the other interface on the nat with a rule for address 154.x.x.x and changed by the nat in address 10.x.x.x . I want trying to do this the following rule iptables -t nat -A POSTROUTING -s 10.0.0.0/255.0.0.0 -o eth0 -j SNAT --to source 154.0.0.0/255.0.0.0 But i am not sure , is my probleme solvable by a combination of iptables , nat and route ? Thanks for any clue Guilhem michel -- Guilhem michel Administrateur proxy
