Lee Bradshaw wrote: > > On Wed, Dec 16, 1998 at 10:19:35AM -0800, Ian Eure wrote: > > Lee Bradshaw wrote: > > > > > > On Wed, Dec 16, 1998 at 03:29:04AM -0600, John C. Ellingboe wrote: > > > > Lee Bradshaw wrote: > > > > > > > > > > On Mon, Dec 14, 1998 at 03:29:49PM +0000, Ian Stuart wrote: > > > > > > > > > > > > what I wish to do is set up my PPP connection so that (when it is > > > > > > up) all > > > > > > requests for the ISPs network is routed via ppp0, whilst all other > > > > > > traffic > > > > > > is routed via eth0 > > > > > > > > > > > > (Assume that my academic lan is the class B 129.1 and my ISP is the > > > > > > class > > > > > > B 130.2) > > > > > > > > > > Try something like: > > > > > > > > > > route add -net 130.2.0.0 dev ppp0 > > > > > > > > > > > > > This will limit your access to just the 130.2.0.0 network over ppp. > > > > > > That's what he wanted -- isp network over ppp0, everything else over eth0. > > > I suspect your ppp0/eth0 setup is more common, but it's now what he > > > needed. > > > > > > > Do > > > > > > > > route add -net [your local net address] dev eth0 > > > > > > > > and use the "default route" option for ppp to get to everything on the > > > > internet. I ran this way for some time and it worked fine for access > > > > to either route. > > Ah.... but, let's say that you also have file sharing or some other > > service on your system, and that it is visible to the outside world > > through your ethernet. Will the services still work, or will the system > > send out the syn/ack packet (in reply to the syn for requesting a > > connection) on the ethernet, or over the ppp? > > I'm not sure I understand the question. Addresses in the 130.2.0.0 net > are routed through the ppp0 interface. Everything else is routed through > eth0. > > In general requests from the eth0 interface will be serviced through > eth0 and those from ppp0 will be serviced through ppp0. There are two > wierd cases. 132.2.x.x addresses requesting services through eth0 - the > reply will go through ppp0. Non 132.2.x.x addresses requesting services > through ppp0 - the reply will go through eth0. > > If you have a specific problem in mind, please provide an example using > the original ip addresses - 132.2.0.0 (isp) ppp0, 129.1.0.0 (local) > eth0, default eth0. Ok. Let's say I have a linux box on an ethernet. It's ip is 192.168.111.55. The router on the ethernet is 192.168.111.1. Let's say I have a web server on 192.168.111.55, accessible from outside my local network. Let's further say that I set up ppp the way you described, with a network route to my localnet (route add -net 192.168.111.0 netmask 255.255.255.0 dev eth0) and the default set to the ppp0 interface (route add default gw ip.addyof.ppp.peer dev ppp0). What happens when a request for a web page comes in? Does the page get sent back from the ethernet interface, with the ip 192.168.111.55, or through the ppp0 interface with the dynamic address of the dialup?
-- ______________________________________________________________ | ian eure, network admin, freelance security consultant, and | | manically depressed paranoid schizophrenic, at your service. | ; <[EMAIL PROTECTED]> - http://minion.org ; : raw speed = 105.6 wpm with 4.5% errors : . . . . . . . . . . . . . . . . . . . . . .
