Moving packets from one port to another
Hi, I'm trying to route packets from ones from one interface to another, without using NAT i.e. eth0: 192.168.1.31 (connected to rest of world and DHCP server) eth1: 192.168.1.32 (connected to other computers.) The other computers would be on the 192.168.1.0/24 subnet and hopefully be able to see all the computers on the subnet. I presume I'm going to have to make some sort of bridge, with some forwarding as with IPtables. It would be nice not to have a static IP on the other computers. Any suggestions, or discussion of the options, would be gratefully received, James -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/502c177a.70...@googlemail.com
Re: Moving packets from one port to another
Hello James, James Allsopp jamesaalls...@googlemail.com wrote: Hi, I'm trying to route packets from ones from one interface to another, without using NAT i.e. eth0: 192.168.1.31 (connected to rest of world and DHCP server) eth1: 192.168.1.32 (connected to other computers.) The other computers would be on the 192.168.1.0/24 subnet and hopefully be able to see all the computers on the subnet. I presume I'm going to have to make some sort of bridge, with some forwarding as with IPtables. It would be nice not to have a static IP on the other computers. Any suggestions, or discussion of the options, would be gratefully received, James There are two ways to do this: a) The bridge: You add both eth0 and eth1 to a bridge, which then gets an IP address from the DHCP server and forwards everything on the ethernet level. b) The router: For this to work, you need to divide your subnet into further subnets (or only use specific IPs behind the gateway) in order to -- A board is the planck unit of boredom. http://chubig.net telnet nightfall.org 4242 signature.asc Description: PGP signature
Re: Moving packets from one port to another
Hello James, please excuse the incomplete mail. Ctrl+Return did not do what I intended it to do. :\ James Allsopp jamesaalls...@googlemail.com wrote: Hi, I'm trying to route packets from ones from one interface to another, without using NAT i.e. eth0: 192.168.1.31 (connected to rest of world and DHCP server) eth1: 192.168.1.32 (connected to other computers.) The other computers would be on the 192.168.1.0/24 subnet and hopefully be able to see all the computers on the subnet. I presume I'm going to have to make some sort of bridge, with some forwarding as with IPtables. It would be nice not to have a static IP on the other computers. Any suggestions, or discussion of the options, would be gratefully received, James There are two ways to do this: a) The bridge: You add both eth0 and eth1 to a bridge, which then gets an IP address from the DHCP server and forwards everything on the ethernet level. b) The router: For this to work, you need to divide your subnet into further subnets (or only use specific IPs behind the gateway) in order to - set up your external DHCP server/router to tell it that it can find those IPs behind the gateway. - set up your gateway to tell it to forward stuff to those computers via eth1. If this is done, you need to enable IP forwarding via a sysctl call on the gateway. Here, the forwarding takes place on the IPv4/6 level. I would suggest to go by a), which is much simpler. If you need more help with either of them, please feel free to ask. Best regards, Claudius -- A board is the planck unit of boredom. http://chubig.net telnet nightfall.org 4242 signature.asc Description: PGP signature
