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Home > Archive > 70-088 > December 2000 > Protocols on Proxy Server
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Protocols on Proxy Server
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| Ok, so I took this mock-exam, and one of the questions is word like this:
Your corporate network uses the TCP/IP, IPX/SPX and Net BEUI transport protocols. A Proxy Server computer is used for internet access. Which transport protocols should you bind to the network cards on the Proxy Server computer?
a. Bind TCP/IP to the external network card, and bind all three protocols to the internal card
b. Bind TCP/IP to the external, TCP/IP and IPX/SPX to internal
c. Bind all three to both cards
d. Bind only TCP/IP to both card
e. Bind only TCP/IP and IPX/SPX to both cards
The answer, according to the answer sheet for this test, is a. They say that, although Proxy Server supports only TCP/IP and IPX/SPX on the internal network, the Proxy Server in this scenario can be running other apps or storing data that must be accessed by other computers on the internal network. But I'm trying to think "Microsoft", and don't they usually suggest using Proxy Server with as little other apps as possible? And since this scenario doesn't mention any other apps, shouldn't you assume there are no other apps on this box(corporate network usually leaves me to believe there is more than one server)? I would think the answer is a. Since your network supports TCP/IP, and you only bind TCP/IP to the external card on the Proxy Server, why would you need to bind anything else to the internal card? I realize I may not see this question on my real exam, but I'd like to know for my own curiosity. Anyone have an opinion? | |
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| Sorry, actually I meant to say I chose d, bind only TCP/IP to both cards. | |
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| Going with what I think I know so far...
To the external card, you want TCP/IP. That is the card connecting to the internet.
The internal card will be for communicating with your network. Since your network uses all 3 protocols, bind all 3 protocols to it. It doesn't say that every computer uses all 3, it just says that all 3 are used. I'd go with "A"... and if I'm wrong, it would be "b" as my second guess (leaving off the Netbeui.. but I think you'd still want it there, so I'm 90% A , 10% B).
-Kenny | |
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| kenny's got it right on. you will need all three on the internal nic to support whatever applications/services that may be running on the network. and moondog, yes you are correct about trying to think like MS but here they have explicitly stated that the other protocols are in use on the network so you need to accommodate them. in an ideal world you would use your Proxy for only the services it provides and only use one protocol which would be tcp/ip.
and of course you don't want netBeui on the external nic.
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chunder
- MCP (WS, Server, Enterprise)
- Network+
- CNE 5
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| Yup, I agree with Kenny and Chunder.
Answer - "A"
Spid
Net+, MCSE | |
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| proxy only deals with TCP/IP | |
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| munruss,
can you elaborate?
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chunder
- MCP (WS, Server, Enterprise)
- Network+
- CNE 5
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| Here is a note from the Sybex book I've been using to study Proxy Server:
Protocols other than TCP/IP and IPX/SPX, such as DLC, LAT, and NetBEUI, will not communicate with the proxy server. Do not bother to add these protocols to the proxy server unless clients will be using file, print, or other service that are installed on the proxy server. NetBEUI-only clients must add IPX or TCP to use the proxy server. In general, the external interface should only have TCP/IP bound to it.
This leaves me to believe, based on the way the original question was worded, that NetBEUI is not necessary on the internal adapter. Chunder, based on what you said about having to accomodate the protocols on the network and what the above note from the Sybex book says, b should be the right answer, right? You know, I can deal with one single word changing the question, and consequently the whole answer around, but some of these questions can be so vague.... | |
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| In my opinion I'd choose B based on real world experience; However from the tests point of view i.e. MS I'd have to opt for A.
My Reasoning: In the real world I'd have a proxy configured to use TCP/Ip externally and Internally I'd have TCP/IP & IPX/SPX since Proxy does not support any others. NetBuie is a waste of reources since all the PC's in the network would only use a Proxy server for Internet Access mainly. However in the world of MS tests they may presume that the proxy server may also double as a resource server (that is file sharing/printing) to which all clients would require access. Thus from the MS test point of view the only correct answer is A.
Does this make any sense to you lot?
Yeti the Poxy Proxy Moron 
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MCNE MCPx3 SCO ACE LCD Compaq ASE (Wannabe CCIE part of the Wannabe Boffin Club) http://www.yetigbr1.plus.com or http://www.mcse2000.plus.com
mailto:Yeti@zerg.com
[This message has been edited by Yeti-GBR1 (edited 12-06-2000).] | |
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| yeti gives the same reasoning as to why i would select all 3. but, i could be looking for a reason to say NetBeui even though we all know Proxy doesn't care about the protocol for acts of proxy.
i think netbeui is a worthless protocol anyhow.
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chunder
- MCP (WS, Server, Enterprise)
- Network+
- CNE 5
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| Now I don't want to sound argumentative about this (dead-horse beater here), but this NetBEUI bothers me. The Proxy Server is installed for inernet access, as per the question. NetBEUI is NOT supported by Proxy Server, so a client using only NetBEUI would be forced to install IPX/SPX or TCP/IP. So, knowing that, even if the Proxy Server is used for other apps (file/print sharing), why would you bind NetBEUI to the internal NIC. Maybe the client doesn't get internet access? Did I just answer my own question?
Seriously, thanks guys. This is a great site for sounding off. Even when I'm not posting, just reading what others have to say about a given topic has helped loads more than just some simple dump site. |
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