Java sniffer for a TELNET session

Question

Hi
I need to interpret test results of a telnet session using a java sniffer..........how do I do this.
Thx
Frederd

Answer 1

I need to interpret test results of a telnet session
using a java sniffer..........how do I do this.You'll need to use two computers to do this, since Telnet uses a "well known port" to accept connections (look at www.iana.org for port number). Since only one process can hold a port, you'll need to run your telnetd on one machine, and have clients connect to another where your sniffer owns that port.
Once you've set this up, the sniffer itself is a simple pass-through portal: it accepts a request, makes a corresponding connection to the actual telnetd, then simply passes bytes from one connection to the other (logging them in the middle).