Solved

IIS - Max URL Length?

Posted on 2000-04-12
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Last Modified: 2013-12-24
HI,

I was trying to access a URL which had 247 characters in it.

Almost every time (NOTE - NOT Everytime) I tried to access it, it brought down IIS on my server.

Any idea why this happened?

After reducing the URL length by moving my html files into a higher directory it worked fine.

1. Is there a max length for a URL in IIS?
2. Why did the problem above occur most of the times and NOT everytime if there is a max limit?

Thanks,
Pranu
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Question by:pranu
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Accepted Solution

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cheekycj earned 20 total points
ID: 2723051
I believe the standard Max length is 256 chars.

IIS is known to have a threshold of 8K.

http://www.insecure.org/sploits/MS.IIS.DOS.long_URL.html
http://www.dataguard.no/bugtraq/1997_2/0541.html

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by:pranu
ID: 2723091
Thanks Pal!
Quite informative!
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