Hello Jim,
Replying to a message of Jim Trulock to All:
 JT> Hello All ...
 JT> I'm just wondering about the validity and workability of the following
 JT> setup ...
 JT> 4 computers, all with TCP/IP 3.0 installed and ethernet cards ...
 JT> Computer 1 as a file/print server
 JT> Computer 2 has a T1/ISDN/dedicated dialup (whichever I can afford) to
 JT> an ISP
 JT> Computer 3 has dialup modems for my BBS
 JT> Computer 4 is a "work" machine
 JT> What I'm wondering is, with that type of setup, can Computer 4
 JT> send/receive e-mail, ftp from ftp sites, and surf the WWW?
It will depend on how you connect to your ISP, and how many Internet 
addresses you get from your ISP.  
Scenario 1
You get addresses from your ISP for all of your machines.  Connect all of 
them with network cabling.  Set up computer 2 as your 'router' since it has 
the connection to your ISP.  Point the other machines to that router.  
Whenever you have TCP/IP activity on any of your machines destined for the 
Internet, it will go through computer 2 to your ISP.
Scenarion 2
You get one address from your ISP.  Assign that address to computer 2.  
Connect all of them with network cabling.  Set up private net addresses on 
all of your machines (such as 192.168.1.XXX where XXX goes from 1 to 255).  
Set up a proxy server on computer 2 to accept Internet requests from your 
private net addresses and relay them to the Internet using computer 2's 
'real' Internet address.  The 'router' address for your private net machines 
will be computer 2's private address.  The 'router' address for computer 2 
will in turn point to the 'real' Internet address on computer 2 (which is 
your ISDN hookup or whatever).
Scenarion 3
You get two addresses from your ISP.  Assign one of them to an ISDN router 
box (ie Ascend Pipeline 75 or similiar).  Assign the second one to computer 
2.  Connect all of them with network cabling.  Set up private net addresses 
on all of your machines (such as 192.168.1.XXX where XXX goes from 1 to 255). 
 Set up a proxy server on computer 2 to accept Internet requests from your 
private net addresses and relay them to the Internet using computer 2's 
'real' Internet address.  The 'router' address for your private net machines 
will be computer 2's private address.  The 'router' address for computer 2 
will in turn point to the 'real' Internet address on the ISDN router.
The third scenario is close to how I have it set up at work - one computer 
(same as your computer 2) is connected to the 'outside' Internet world via 
the ISDN router through one network card, and is also connected to the 
'inside' private world through another network card.  All the remaining 
computers are connected to the private network.  Computer 2 now can act as a 
web server and proxy server.
Regards, Alec
--- FleetStreet 1.12 NR
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