🚀 go-pugleaf

In article <6ja3mh$47u$2@kiyoko.communique.net>, hebertf@cnrf.nola.navy.mil (Fred Hebert) wrote:
>I am looking for a Linux guru for some quick answers to questions about 
>firewalls and proxy servers.

>
<snip-snip>
>

>Nearly all of my customers are getting connected to the Internet.  Most only 
>have dial on demand connectivity, but some have leased lines.  One of my 
>favorite configurations is to user a proxy server to connect the entire office 
>through a single ISP connection.  This way the private IP addresses on the 
>network are not visible on the Internet.  This can also be done with some 
>firewalls.  Is there such a product available for Linux? If so where can I get 
>it?
>

I'm not an expert at this, but I can make a couple of comments.  The 
masquerading features you are looking for are built into the latest kernels 
(as are the firewall features).  Look at www.linux.org in the help centre for 
information on this.  In particular, the Firewall and Ip-Masqurade Howto's

Dial on demand can be accomplished in a couple of ways.  The only way that I 
have any experience with is the program DialD 
(www.loonie.net/~eschenk/diald.html)  which brings your link up and down 
depending upon the traffic flowing through it.  I found it to work quite 
well so far.  Again check the howto's (in particular ISP-Hookup).

BTW, for this kind of question a better group to look at is 
comp.os.linux.networking.

Hope this helps,
erik.