Re: [CentOS] how to reroute all ADSL traffic via another server on theinternet?
-Original Message- From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of Rudi Ahlers Sent: Wednesday, 28 April 2010 11:11 PM To: CentOS mailing list Subject: [CentOS] how to reroute all ADSL traffic via another server on theinternet? Hi all, Does anyone know, if it's possible to reroute all (i.e. HTTP / FTP / DNS / SMTP / POP3 / IMAP / etc) from an ADSL connected machine via another server, which is currently hosted with IS and has full internet access? i.e. Can I setup another machine, on a different public IP than the dynamic ADSL IP as default gw? OR do I need todo something on that machine to work as a router for such a setup? Both servers in this case is CentOS linux, but I'm sure that won't make a big difference? You could use GRE tunnelling, which is supported by Linux and Cisco among others. You could set up a GRE tunnel between your two sites, assign a /30 for the link, and route most traffic over the GRE interface (Minus the IP Address of your remote site - it must be routed via your internet connection). This will behave as a point-to-point link between your sites. Check out the ip(8) command, in particular the ip tunnel commands. But, something like this should be a nice start: ip tunnel add Tunnel0 mode GRE remote 1.2.3.4 ifconfig Tunnel0 10.10.10.1 netmask 255.255.255.252 ip route add 1.2.3.4/32 via 6.7.8.9 Cheers, Dan ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] how to reroute all ADSL traffic via another server on theinternet?
Dan Irwin wrote: -Original Message- From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of Rudi Ahlers Sent: Wednesday, 28 April 2010 11:11 PM To: CentOS mailing list Subject: [CentOS] how to reroute all ADSL traffic via another server on theinternet? Hi all, Does anyone know, if it's possible to reroute all (i.e. HTTP / FTP / DNS / SMTP / POP3 / IMAP / etc) from an ADSL connected machine via another server, which is currently hosted with IS and has full internet access? i.e. Can I setup another machine, on a different public IP than the dynamic ADSL IP as default gw? OR do I need todo something on that machine to work as a router for such a setup? Both servers in this case is CentOS linux, but I'm sure that won't make a big difference? You could use GRE tunnelling, which is supported by Linux and Cisco among others. You could set up a GRE tunnel between your two sites, assign a /30 for the link, and route most traffic over the GRE interface (Minus the IP Address of your remote site - it must be routed via your internet connection). This will behave as a point-to-point link between your sites. Check out the ip(8) command, in particular the ip tunnel commands. But, something like this should be a nice start: ip tunnel add Tunnel0 mode GRE remote 1.2.3.4 ifconfig Tunnel0 10.10.10.1 netmask 255.255.255.252 ip route add 1.2.3.4/32 via 6.7.8.9 That could work approximately the same as a VPN - but you'll probably also have to source-NAT as you route on to internet destinations so the return packets will follow the same path back. -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
