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cnds activities - week 8
Back | Wk 1 | Wk 2 | Wk 3 | Wk 4 | Wk 5 | Wk 6 | Wk 7 | Wk 8 | Wk 9 | Wk 10 | Wk 11

Lab-based Activities

Week Beginning (Napier/JWatt/Lauder): 17 Nov 2003 [Activities]

The activities for this week are: [Background]

Activity 8.1: Router Tutorial

Run and complete the router tutorial [Link][PDF]

Lab Activity 8.2: Complete details of activities

Once you have completed the activities, please complete the following form, and submit it:

[Activities form]

If you have time complete the following:

Activity 8.3: Router Challenge 1

Complete the challenge [Link]

Activity 8.4: Router Challenge 2

Complete the challenge [Link]

Activity 8.5: Router Challenge 3

Complete the challenge [Link]

Activity 8.6: Router Challenge 4

Complete the challenge [Link]

Additional Activities

The additional activities for this week are:

Activity 8.1: Subnet addresses (255 subnet mask)

Calculate network addresses for a 255 subnet [Link]


Activity 8.2: Subnet addressing (240 subnet mask)

Calculate network addresses for a 240 subnet [Link]


Activity 8.3: Number of subnets/hosts per subnet

Calculate the number of subnets and hosts per subnet [Link]



Activity 8.4: Subnet mask (for a required number of hosts)

Calculate a subnet mask for the required number of hosts [Link]


Activity 8.5: Subnet mask (for required number of hosts per subnet)

Calculate a subnet mask for the required number of host per subnet [Link]


The challenge for this week is:

Challenge 5: IP - The Future?

The Internet has been extremely successful, and is now used for applications which could never be con-ceived when it was initially developed. One of the major problems is that there is not enough IP addresses around to cover all the devices which might want to connect to the Internet. Thus mechanisms are being put in-place to migrate towards a future system which allows an increased number of IP addresses. There are also security weaknesses in the current version of IP addresses (IPv4), as the source of a host can be easily identified as the source address is added to the IP data packet. The main proposed standard is IPv6, which tries to overcome some of the current problems. It increases the addressing range with a 128-bit address, and thus will allow for an almost unlimited amount of addresses. This new standard will also al-low autoconfiguration of network addresses, which should make it easier for devices to connect to the Internet. It will take a while before the Internet can be fully IPv6, thus this paper looks at other methods, including NAT/PAT, proxy servers and VPNs, which allow increased security, by hiding the source, and support private addressing structures. [Link]