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Media-One Express, IP Masquerading

Is this like taking a drink from a fire hose? =)

Thanks for all the reponses folks, it's been great.

So far it looks like Jerry's configuration with 10Base2 is the closest to
what I'd like to set up.

What I'd like to do is to plug the modem into a 10baseT hub, then our three 
other computers into the hub, one of which will be a Linux system doing the
IP masquerading.  I would like to avoid having double ethernet cards on
the Linux box.

I understand that the M1X cable modem is configured by them to recognize one
particular MAC address that receives all the packets from the Internet.  So
the card on the Linux box will be the official receipient from the cable
modem, but it will then also have to be aliased as the gateway of the
internal network.  

Is this possible to do without having a separate card?  The Linux FAQ from
Media-One uses a setup of two cards in the Linux box plus the second machine.
Seems to me that this is probably unnecessary?  Although technically
security-wise I know that is the Right Thing(tm), we don't have much 
inclination nor need for such firewalling.

Thanks again for your reponses.

. . . Sean Chen.

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