The 100Mb NIC will not make any difference. The bottleneck (at least on
your side of the phone line) will be ISDN. If your Linux box is a 486-66
with 16M or better, and you do not run apps on it (esp. X Windows), you
can expect excellent performance as a firewall/router. It *will* be
slower than if the ISDN was connected directly to the * pc, but
only by a millisecond (probably a lot less). Be sure to use ipchains
intelligently, though, so that the list of rules that must be checked
for each packet is short.
You should be aware than some games perform a "ping" function using a
proprietary mechanism that can get confused by an IP Masq firewall. This
frequently takes the form of a fast, responsive connection that appears
as "failed" or "unreachable" to other players. Do not be discouraged,
as this usually makes no difference to playability.
Depending on your location, cable modem service is usually a *lot*
faster than ISDN, sometimes for less money. I typically get about 2Mbps
downloads for $40/month flat rate.
> I plan to set up a linux router for my win2k client (for testing purpose).
> I'm also often * online. Low ping is important. Should I expect a
> higher ping because of the routing through the linux box with a 100Mbit
> Network on a single ISDN ligne?
> Thanks for answering