On Tue, 13 Jul 1999 14:20:47 +0200, Jens Slwald
>> the difference between a proxy server and IP masquerade. Are they the
>WinProxy uses NAT (Network Adress Translation) and is not only a proxy.
(To original poster) In general a "proxy server" can be as simple
as a web proxy, like the one you can get from
http://www.junkbusters.com - for instance.
The way a typical web proxy server works, your web browser (lynx,
netscape...) must be told that your are using a proxy server, and
what its address and port number are.
Proxy servers for other protocols exist, I believe, but I'm not
familiar with them.
Then there is SOCKS, which is a similar concept carried to almost
any protocol, but again, your client (like telnet, ftp, rsh,
whatever) must be "SOCKS-aware" to be able to use it.
When you use IP Masq, the outside world thinks all requests are
coming from the gateway machine itself. So even if you have 255
machines inside your network using IP addresses from the private
IP block, the outside world doesn't see any of them. The
advantage is that, as long as the routing is setup correctly, your
"clients" need not be any different - they actually think they're
talking directly to the outside host, and in a way, they are. A
bigger advantage is that you need only 1 "real" IP address for a
whole bunch of people.
NAT, I believe, is similar, except that there is a 1-to-1
correspondence between IP addresses on the inside and those seen
by the outside world. So you need more "real" IP addresses. I
don't know more than that.
Hope this helps.