would a SCOPE ID be a readable part of a packet header?

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smaier69
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would a SCOPE ID be a readable part of a packet header?

Post by smaier69 »

if a person were running a server (on a LAN, for agrument's sake) and a sniffer/network analyzer on the LAN, would they be able to decrypt the SCOPE ID of a client computer connected to their host (mentioned previously) via the 'net?

[ 04-01-2001: Message edited by: smaier69 ]
"I think this day will go down as a black day in the history of mankind"

-Leo Szilard - December 2, 1942, following the first successful nuclear fission test.
AmdAce
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Post by AmdAce »

I don't want to sound like an ass, but a main reason to try to obtain a system's scopeid using the method you describe would be to hack into that system. (Its a documented hack)
Scopeid is normally used to help secure systems using netbios.
If you are trying to connect to another system with a certain scopeid you should contact the admin for that info.
smaier69
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Joined: Sat Apr 22, 2000 12:00 am
Location: Anaheim, CA USA

Post by smaier69 »

well, i realized how the question sounded (i dont think you sound like an ass. my first reaqction would have been the same had somebody else asked the question), but i was debating with myself about experimenting with setting up a SCOPE ID for the server on my LAN here.

i was just pushing the envelope in terms of security-related questions regarding this. some time ago, i was talking with one of my IT buddies (i'm in a slightly different field, but i know a couple people), and we tossed around a scenario for very high security (by the standards of the day). its juts at the time, the packet header issue had not occurred to me.

i was just curious. i suppose i could answer my own question by going ahead and setting it up and running some tests..... i am just (reputedly, anywys : ) a very lazy man.

[ 04-03-2001: Message edited by: smaier69 ]
"I think this day will go down as a black day in the history of mankind"

-Leo Szilard - December 2, 1942, following the first successful nuclear fission test.
AmdAce
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Posts: 59
Joined: Wed Nov 15, 2000 12:00 am

Post by AmdAce »

To answer the original question, no , I don't believe you will be able to decypher the scopeid with a sniffer/analyzer. That's what makes it a very good lockdown for netbios (but not a cure-all).
Without detailing the process for obtaining scopeids, let's just say you would have to be an EXTREMELY astute hacker to obtain this information.
smaier69
Senior Member
Posts: 2191
Joined: Sat Apr 22, 2000 12:00 am
Location: Anaheim, CA USA

Post by smaier69 »

sweet. if the answer had been "yes", i probably wouldn't have gone through the effort. there are much easier ways to give up a masked address.... no sense in doing so with scopeid.

i am somewhat familiar with whats involved, i just have not actually configured it myself.

looks like i have a project for the weekend... thank you for the input.
"I think this day will go down as a black day in the history of mankind"

-Leo Szilard - December 2, 1942, following the first successful nuclear fission test.
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