Learning by Doing: CISCO Certified Network ... - SCN Research

6. Fun…isn’t it? Here’s one for the “Hard Drive Café”
7. You can also telnet to specific ports on the computer. We could also telnet in to
port 23 on the same machine (the telnet port). Like this:
8. We can telnet to all kinds of sites. This is not used as much anymore because
everyone pretty much uses http on port 80. If you know how to use it you can
really zip around and you can find much more information (although some of it is
older). Think about it…the web sites will tell you where to buy the book, but
telnet/BBS/FTP sites may have the full text documents…they have been around a
lot longer than the “commercial Internet.” On the next page you will find some
“fun ports to surf.”
Supplemental Labs or Challenge Activities:
1. Go out and perform the tutorials on how to use telnet and its associated websites:
http://www.cs.indiana.edu/docproject/zen/zen-1.0_7.html
2. Find some more BBS and telnet sites at http://www.thedirectory.org/ . It’s fun for
the whole family.
3. Go out and find all port numbers and their associations.
So What Have I Learned Here?
You have learned about more utilities that can be used, but are not used as much
anymore. Let’s face it…it’s the old school stuff…unforgiving, DOS-like, tough to use
programs. The Internet is easier, but this will help “round you out.”
137