Telnet has the concept of the Network Virtual Terminal,
for which it sends control codes in-band. The escape codes
you are seeing are those control codes. Think of it as kinda
like curses for the NVT.
For details see:
http://www.scit.wlv.ac.uk/~jphb/comms/telnet.html
Skip
On Thursday 20 April 2006 09:37, gamgamus@yahoo.com wrote:
Hello,
I have captured some AS400 telnet traffic with tcpdump on port tcp 23.
It seems to be encoded in some way, because I only can see a few initial
cleartext words, like: IBMRSEED, KBDTYPE, CODEPAGE, IBM-3477. The following
stream of words are unreadable with encoding or chiper.
When I see the dump with Ethereal, the decoded data are like:
\000\r\022\240\000\000\004 and goes on...
Does anyone known how to decode this capture to get the cleartext form?
--
Dr. Everett (Skip) Carter Phone: 831-641-0645 FAX: 831-641-0647
Taygeta Network Security Services email: skip@taygeta.net
1340 Munras Ave., Suite 314 WWW: http://www.taygeta.net/
Monterey, CA. 93940
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