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freetds - hints for writing a proxy?

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Subject: FreeTDS Development Group

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  • From: ark AT eltex.ru
  • To: freetds AT franklin.oit.unc.edu
  • Cc: ark AT eltex.ru
  • Subject: hints for writing a proxy?
  • Date: Tue, 23 Feb 1999 13:52:06 +0300


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nuqneH,

I am currently writing a TDS proxy for firewall (ms-sql and sybase).
Some questions are:

a) How can i _reliably_ detect login packet? Parsing based on message
id is not reliable: i've seen ms sql client that does set _all_ messages
id to 0x04 and it still works!

b) What is OOB data format? is it the same packet-based one? What for
OOB messages are used?

c) What else is worth filtering?

_ _ _ _ _ _ _
{::} {::} {::} CU in Hell _| o |_ | | _|| | / _||_| |_ |_ |_
(##) (##) (##) /Arkan#iD |_ o _||_| _||_| / _| | o |_||_||_|
[||] [||] [||] Do i believe in Bible? Hell,man,i've seen one!

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