Routing with dialup modem and NIC

  • Thread starter Thread starter Alex
  • Start date Start date
A

Alex

I have a computer that has two modems and a NIC. The NIC routes TCP
correctly when the modems are not installed. However, if the modems
are installed, TCP tries to route out through the modems instead of
the NIC. The NIC is a 192 address and is behind a firewall. I want
TCP to route through the modems ONLY if the modems are connected.
Otherwise, I want TCP to route through the NIC.

How can I go about doing this?

Thanks,

Alex
 
The NIC is a 192 address and is behind a firewall. I want
TCP to route through the modems ONLY if the modems are connected.
Otherwise, I want TCP to route through the NIC.
Click to expand...

This is what happens with all versions of windows (95 onwards) by
default. Windows will not attempt to route traffic through a modem
which isn't connected.


Jim.
 
Windows will not attempt to route traffic through a modem
which isn't connected.
Click to expand...
isn't connected to what? the dial tone? I mean, if you connect to the
internet via the phone line, then the router will route through the modem?
 
isn't connected to what? the dial tone? I mean, if you connect to the
internet via the phone line, then the router will route through the modem?
Click to expand...

Windows will route traffic down the modem line only if there is an
active dial up connection. Regardless of whether there is a modem
physically attached to the computer, if you do not have an active
connection (to your ISP or elsewhere) then the traffic will go via the
LAN adaptor.

If, for whatever reason, you want traffic to go via the LAN when the
dialup is active, you can go into the advanced tcp/ip properties of
the dialup connection and uncheck the box which says "use default
gateway on remote network. However, if this connection is to an ISP,
you will find it easier to leave this as the default gateway and set
up static routes to the LAN.

If you want a more precise answer you need to make clear what you are
trying to achieve and what the actual problem is.


Jim.
 
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