Integrating With the Network - Lab Exercises

Ethernet - Lab Exercises

Exercise 1:

Determine the type of ethernet connection(s) available on your workstation and the type of ethernet wiring used to connect your workstation to the campus network.

TCP/IP - Lab Exercises

Exercise 1:

Disable the network connection to your workstation, using the ifconfig command.
List the command(s) used:

Exercise 2:

Check the connection to the workstation and to the network with the ping command.
List the command(s) used:

Exercise 3:

Enable the network connection, using the ifconfig command and check the connection to the machine ns.internic.net.
List the command(s) used:

Exercise 4:

Using the command netstat, determine the default route for IP traffic on this machine. Set the default route to be "129.79.16.184". Check the network connection. Reset the orginal default route in the route table.
List the command(s) used:

Exercise 5:

Again using the netstat, determine the average number of data packets being sent and recieved by your workstation with in any 5 second interval.
List the command(s) used:

Domain Name services - Lab Exercises

Exercise 1:

Using the command nslookup list the mail exchange names associated with the host "ucs.indiana.edu".

Exercise 2:

Using the command nslookup list then root servers' name and then set your name server to be the root server.

Exercise 3:

Using the command nslookup , find the Fully Qualified Domain Name for the IP address, 192.9.9.24.

Network Services - Lab Exercises

Exercise 1:

• Disable finger service on your workstation. Verify that the service has been disabled by fingering your machine and seeing that the connection is refused. After verifing, re-enable the finger service.
• Re-enable finger service on your workstation. Verify that the service has been re-anabled by successfully fingering your system.

Exercise 2:

Find out what time your machine has by telneting to the port which runs the daytime service.

Network File Systems - Lab Exercises

Exercise 1:

• List the file systems exported from edcert20.ucs.indiana.edu to your workstation.
• Create a directory /edcert20 on your host and using the mount command, mount the /usr/contrib file system exported from edcert20.
• List the nfs file systems currently mounted on your host.
• Locate the file gzip.info within the nfs directory you just mounted and view its contents.
• Unmount the the directory you just mounted.
• Create the necessary entry in the fstab or vfstab file to mount /usr/contrib from edcert automatically at boot time. Run the necessary command to activate the change.
• Unmount the file systems previously mounted from edcert20.
• Remove the entry from the fstab or vfstab file.
• Remove the directory created, /edcert20.

Exercise 2:

• Create a link /hostname.man to the directory containing the man pages (/usr/man, /usr/share/man, or /usr/share/catman).
• Temporarily export the directory to the world using read-only permission.
• Access the directory from one of the other machines.
• After successful access from another host, unmount the filesystem from the remote machine, remove the file system from the export list and remove the link /hostname.man.