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Re: IP switch (chencx)

daemon@ATHENA.MIT.EDU (Mark Duguid)
Wed Feb 26 22:17:02 1997

Date: Wed, 26 Feb 1997 18:43:16 -0600 (CST)
From: Mark Duguid <aa276@sfn.saskatoon.sk.ca>
To: chen changxin <chencx@linux1.fjinfo.sti.ac.cn>
cc: fw-1-mailinglist@us.checkpoint.com, www-security@ns2.rutgers.edu
In-Reply-To: <Pine.LNX.3.91.970226165135.4514A-100000@linux1.fjinfo.sti.ac.cn>
Errors-To: owner-www-security@ns2.rutgers.edu

On Wed, 26 Feb 1997, chen changxin wrote:

> Hi,everyone,
> 
>   I have some problem. Do somebody help me?
>   We have 100 PCs in the LAN (100M), but only 32 IP. So many computer can't 
> use the Netscape to connect internet. And we have three Netware file 
> server, one Nt3.51, one Nt4.0, one SUN workstation, and two Linux pentium 
> PC and the others is PC now, and use the 100M Bay switch devices and 
> one cisco 2100 and one cisco 7000. 
>   Are there someone to help me to solute the lack IP problem? I have heard 
> Cisco's some product can do. If someone know, pls let me know. 
> 

Linux supports a thing called "IP Masquerading."  if the boxes without real
ip's use the linux machine as their gateway, the linux box can take the
connections and re-wrap them and send them off as if it came from the linux
box.  i've used this for the past 3 months and its worked beautifully.
(irc, telnet, ftp, netscrape, lynx yadda yadda yadda all work great, its
just *server* stuff that requrires a port redirector.(redir-0.7)



the dox explain it better than i can.
dox for ip masqerading can be found at 
sunsite.unc.edu/pub/Linux/doc/HOWTO/mini/IP-Masqerade

--
Mark Duguid     Saskatoon, Saskatchewan, highbit@hssktn15.sk.sympatico.ca
Lord grant me the serenity to accept the things I cannot change.The courage
to change the things I can.And the wisdom to hide the bodies of the people
=-=-=-=-=-=-=-=-=I had to kill because they pissed me off=-=-=-=-=-=-=-=-=-=


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