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Talahaski
Enchanter
Joined: 10 Oct 2000
Posts: 656
Location: USA
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 Posted: Wed Jun 04, 2003 9:18 pm
Proxy
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I was wonder if somebody could explain what Proxy's are used for, a little about thier general purpose and what is needed to set one up. Do I need to pay for a proxy service somewhere, or are there free ones?
Does Proxy stuff have anything to do with forwarding services? At work and our firewall blocks all non-standard ports. Would using a proxy allow me to bypass this? What's the best way to go here, I could leave my home PC on during the day and set up some forwarding thing, but I don't know anything about that stuff. If anybody has some experience with this, I would appreciate some help.
Talahaski
Processor PIII 1000
Memory 265MB
Video NVIDIA 64MB
Windows XP
Zmud Version 6.62
Zmapper Version 1.14
http://www.dartmud.com |
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Darker
GURU
Joined: 24 Sep 2000
Posts: 1237
Location: USA
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Posted: Thu Jun 05, 2003 9:12 pm
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A proxy is pretty much what the "legal jargon" (if you've ever heard it) suggests. Something that performs a task on behalf of another.
On a network, Proxies often exist to funnel traffic through a single "gateway". I.e., instead of everybody in the office being able to request web pages from their own computer, you might Proxy them through a central server at the IT department.
This does 2 things. First, it shows the outside world only one computer at the office making http requests. This cuts down on information given away that could be used to hack/research. Second, it allows the IT department to monitor the traffic going to the web, since it all goes through one server, and optionally block some outgoing requests and show a nice "Get back to work" message to the users inside the network.
Setting one up can be done through software or hardware. You can set up a proxy server on your own computer (though that wouldn't serve a whole lot of purpose). There are also hardware-based proxies for larger networks. A search on Google for windows proxy software should be productive.
Forwarding Services is similar to proxying in that another computer serves as the gateway for your traffic. Also related is Port Tunnelling, in which traffic specified for a port is repackaged and redirected through another port. I've never experimented with port tunnelling, but generically, it's supposed to allow you to send all of your telnet traffic through a "tunnel" on port 80 (http/web) to an outside server designated as the end of the tunnel. That server then sends the request out on the intended port/protocol, wraps up the return, and sends it back to you on the "tunneled" port.
Theoretically this could get you past a firewall at work, but again, I've never tried it.
quote:
I was wonder if somebody could explain what Proxy's are used for, a little about thier general purpose and what is needed to set one up. Do I need to pay for a proxy service somewhere, or are there free ones?
Does Proxy stuff have anything to do with forwarding services? At work and our firewall blocks all non-standard ports. Would using a proxy allow me to bypass this? What's the best way to go here, I could leave my home PC on during the day and set up some forwarding thing, but I don't know anything about that stuff. If anybody has some experience with this, I would appreciate some help.
Talahaski
Processor PIII 1000
Memory 265MB
Video NVIDIA 64MB
Windows XP
Zmud Version 6.62
Zmapper Version 1.14
http://www.dartmud.com
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