You are looking at a very old, but free version of the course. If you are interesed the most recent version, check it out on the Perl Maven site.

8.17. Telnet to Unix machines

Pick a Unix/Linux machine your are using and write a script that will telnet
to it, execute report what network cards does it have (ifconfig on Linux)
and what is its routing table (route -n on Linux).

If you are interested in on-site trainings by the author, please contact me directly.