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Article #414

Re: Snooping on PPP modem connection.

#414
From: Ian Stirling
Date: Mon, 13 Apr 1998 00:00
43 lines
3179 bytes
Tom Bird <hamster@nospam.demon.co.uk> wrote:
: Ian Stirling <00003530BE5B.NO_UCE@mauve.demon.co.uk> wrote in article
: <00003530BE5B.NO_UCE@mauve.demon.co.uk>...
:> Tom Bird <hamster@nospam.demon.co.uk> wrote:
:> : Ian Stirling <0000352FECBD.NO_UCE@mauve.demon.co.uk> wrote in article
:> : <0000352FECBD.NO_UCE@mauve.demon.co.uk>...
:> :> Anyone know how to take raw bytestreams, and produce a tcpdump-like
:> :> dump of the packets going over a PPP connection? Preferably without
:> :> having to write a PPP stack.
:> :> I'm trying to reverse engineer the protocols used to talk to an online
:> :> service, so I can make a linux client.
:> :> It's currently running on windows.
:> 
:> : The easy way to do this would be to download the telnet specification
:> : RFC's.

:> I know how to do telnet, ... that's not the problem, I'm trying to 
:> work out when/where some out of band data is being sent.

: Like the 'wrapper' around the packet?

: e.g. #packet header# --- D A T A --- #packet end#

: and you want to see inside the header and end?

: Dunno how / why you'd want to do that.

I want to determine how a 95 box logs into an oddball server, so I can
clone it, and get a linux version of the client up and working.
Hence, some of the obvious solutions, such as tcpdump, ...
won't work, as they all only work  on the server, which I don't have
access to.
I seem to have found a program which purports to do a tcpdumpalike for
95, don't know how that will work.


-- 
Ian Stirling.   Designing a linux PDA, see  http://www.mauve.demon.co.uk/
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From: Ian Stirling <0000353265BF.NO_UCE@mauve.demon.co.uk>
Subject: Re: Snooping on PPP modem connection.
Date: 1998/04/13
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