> On Tue, 30 Aug 1994, Naved Surve wrote: >> In message <Pine.3.87.9408301054.G7351-0100000@scws3.harvard.edu> you said: >>> Several topics that are fresh in my mind now are: >>> Resolving userid's with the code to enable ban to be more specific. >> >> There is no universal way to do this. IP does not transmit userid >> information in its packets, so it is impossible to determine a userid >> from a telnet connection. On some machines which run identd, it is >> possible to query the ident server to resolve a username. The problem >> is that only about 10% of machines run identd and there is a good >> chance it will lag your server, much like the DNS can lag you when >> resolving hostnames. Telnet does provide a way to obtain userid(s). There are two sub-negotiations provided for this. The first one is ENVIRON, but there appears some sites reversed the implimentation, so they also added a NEW-ENVIRON. For more information check out the Telnet RFCS; 1571 and 1572 come to mind. --BRiT -- clisowsk@mcs.kent.edu (BRiTiSH) | Computer Programmers and Significant Others: aa853@po.cwru.edu (Atari 8-Bit) |"I'm gonna base my next program on her. It'll BRiT / WolfFood / BFD @AlexMUD | take a lot of time and fucking around and it telnet mud.stacken.kth.se 4000 | won't put out." --BRiT
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