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Router Configuration and Security for an Elementary School Network, Exams of Computer Networks

The steps for configuring a router for an elementary school network, including subnet mask and host range assignment, interface addresses, routing protocol implementation, and security measures such as access lists to deny student workstations telnet access to the closest serial interface of the district router.

Typology: Exams

2011/2012

Uploaded on 11/09/2012

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Semester 3 Skills Based Final Part 1 Router Configuration
Student Training
Name: ___________________Date: ______________
Exam Part 1 Overview:
You are the network administrator for a local elementary school. Your task is to setup and configure
the router for your particular location. You must configure the router from the command line of the
console interface using only IOS help. The district office routers, labeled DO1 and DO2, are already
configured and their setup is given below. The district has decided to create 1024 subnets from class
B network 171.17.0.0 to allow room for expansion. The district has also chosen to use IGRP for their
routing protocol and has been assigned autonomous system number 139 by the ICANN.
You will be assigned a Station Number for your school. This number is the same number as the
usable subnet you are assigned to. For example, if you are station number 10, you will be assigned
the 10th usable subnet range from your district’s network. This is illustrated in the diagram by the
letters SN and a number.
For security purposes, all of the student workstations will be given the upper half of the available
addresses in the host range of your school’s LAN. All of your major networking equipment (Routers,
switches, servers, printers etc.) and faculty stations will be given the lower half of the available
address within that same range. You will need to create and apply an access list that filters and
denies the student’s stations TELNET access to the closest serial interface on the district router.
Notes:
_________________________________________________________________________________
_________________________________________________________________________________
_________________________________________________________________________________
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Semester 3 Skills Based Final – Part 1 Router Configuration

Student Training

Name: ___________________Date: ______________

Exam Part 1 Overview: You are the network administrator for a local elementary school. Your task is to setup and configure the router for your particular location. You must configure the router from the command line of the console interface using only IOS help. The district office routers, labeled DO1 and DO2, are already configured and their setup is given below. The district has decided to create 1024 subnets from class B network 171.17.0.0 to allow room for expansion. The district has also chosen to use IGRP for their routing protocol and has been assigned autonomous system number 139 by the ICANN.

You will be assigned a Station Number for your school. This number is the same number as the usable subnet you are assigned to. For example, if you are station number 10, you will be assigned the 10th^ usable subnet range from your district’s network. This is illustrated in the diagram by the letters SN and a number.

For security purposes, all of the student workstations will be given the upper half of the available addresses in the host range of your school’s LAN. All of your major networking equipment (Routers, switches, servers, printers etc.) and faculty stations will be given the lower half of the available address within that same range. You will need to create and apply an access list that filters and denies the student’s stations TELNET access to the closest serial interface on the district router.

Notes:





Semester 3 Skills Based Final – Part 1 Router Configuration – Cont.

(Individual performance - 60 pts – 4 pts each)

District Router DO1 District Router DO Interface Serial 0 IP addr: 171.17.255.65 Interface Serial 0 IP addr: 171.17.254. Interface Serial 1 IP addr: 171.17.255.1 Interface Serial 1 IP addr: 171.17.254. Interface Ethernet 0 IP addr: 171.17.255.129 Interface Ethernet 0 IP addr: 171.17.255.

School Router Configuration: (Instructor or proctor must initial steps as completed)

  1. Subnet Mask: ___________________________________ Initials: _______ Pts: _______
  2. Host Range: ____________________________________ Initials: _______ Pts : _______
  3. School WAN Interface Address: ____________________ Initials: _______ Pts: _______
  4. LAN Interface Address: ( From assigned range above) Initials: _______ Pts: _______
  5. Appropriate Routing Protocol Initials: _______ Pts: _______
  6. Workstation Address: ( From assigned range above) Initials: _______ Pts: _______

Connectivity:

  1. Ping opposite district router’s ethernet interface. Initials: _______ Pts: _______
  2. Telnet to district router from workstation Initials: _______ Pts: _______
  3. Access district router using web browser. Initials: _______ Pts: _______

Adding Security: Create and apply an access list that denies the student’s workstations telnet access to the closest serial interface of the district router you are attached to. For the first section you will need a Faculty IP address and for the second you will need a Student IP address before attempting the tests.

  1. Workstation Address: ____________________________ Initials: ________ Pts: ________
  2. Can access district router via a web browser. Initials: ________ Pts: ________
  3. Can access district router’s serial interface via telnet. Initials: ________ Pts: ________

You must reconfigure your workstation to have a Student IP address before completing the following steps.

  1. Workstation Address: ____________________________ Initials: ________ Pts: ________
  2. Can access district router via web browser. Initials: ________ Pts: ________
  3. Cannot access district router’s serial interface via telnet. Initials: ________ Pts: ________

Points Scored: __________