Conundrum 02 - Another Routing Problem
To assist you in troubleshooting, here is a
scenario that you should
attempt to solve.
Objective
Instructions
The network problem
Requirements
Methodology
Best Practice
Feedback
Objective
This lab will give you the opportunity to practice and
extend your network troubleshooting skills.
Instructions
Below is a diagram of an enterprise network.
There are some network problems, as detailed
below.
Read the text and then try to work out the
problems.
You can download a Packet Tracer file of the current, broken
network.
Draw your own diagram to help you work out the
problems.
The
network problem
This network is running OSPF. Unfortunately the network
engineer has become disgruntled with his employer and has disabled
much
of the network before being fired.
Before he left, he setup a web server running pornographic pages
on the
network and a junior engineer has already set some security
on the Aukland and Delhi routers to
prevent users on their LANs from reaching the website. There
is no security on the London router allowing users on
the LAN to reach the website. The canonical
name of the pornographic web site is www.porn.com.
Requirements
All LAN users must be able to reach the intranet server by using
the canonical name engweb.info.
No users may be able to access the server at www.porn.com.
All passwords must be changed and logged.
Please note that although the switches are not
be a part
of the networking problem, they should be secured
using passwords and appropriate port security.
Can you repair this network?
Methodology
Begin by downloading the Packet
Tracer file.
Run the file in Packet Tracer and open each router
to examine its running configuration.
You should start by drawing the network using the configurations
and
information from Packet Tracer.
Note the network addresses for each segment and compare these to
the configured addresses on the router interfaces
Check which protocols are running - remember the show
commands that you have used.
You should check the workstations as well as the routers for
damage.
Best
Practice
For this exercise, you ought to make notes in your log book of
passwords in this project.
Draw a network diagram and show all IP details
Make a note in your log book of
all the errors that you
have spotted and show how you have made the corrections.
Feedback
Feedback will be given when we meet next week.
Solution will be posted at the end of this week.