proxies and firewalls
Barbish3 at adelphia.net
Mon Feb 2 08:20:39 PST 2004
Are you saying you know of an proxy server that does the nat
Please point me to it.
From: owner-freebsd-questions at freebsd.org
[mailto:owner-freebsd-questions at freebsd.org]On Behalf Of Jorn Argelo
Sent: Monday, February 02, 2004 5:04 AM
Cc: questions at freebsd.org
Subject: Re: proxies and firewalls
When one is connected to a proxy server, the proxy server makes a
to the outside world and transports the data to the computer who is
requesting that information. So the client computer won't make a
connection to the outside world, but it only connects to the proxy
there the administrator can give several rules to the proxy server
allow/dissalow. For example you can disable that clients connect to
port. If you use a proxy server your internal IP address will almost
be shown on sites that show your IP address rather then your true
address. Also, a proxy server caches files it collects from the net,
making it accessable faster.
NAT (Network Address Translator) does nothing more then translating
internal IP address to an external one. So there is a direct
the internet like that, and there is no caching done by the NAT
server NAT is
handy for home use, since you don't have to really tight up your
you do with your company.
So if you got a big company then you should definitely use a proxy
let your people connect to the outside world.
On Monday 02 February 2004 10:38, Hiren wrote:
> greetings all
> i often come across proxies and firewalls under the security
> tutorials and guides, i have read that one can create proxies of
> internet service like ftp www etc.
> my question is what exactly is a proxy and how does it play a role
> security, why and how does it replace NATing, and how does it play
> role in security with regard to NAT. what services can be proxied,
> worth having and general advice.
> thanks all
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