Wireshark

WIRESHARK

London School of Commerce

February2012

Ersin

Subject : Networking and Communication Skills

Lecturer : Florence AGBOMA

Prepared by;

Gilbert AWAH L0136MPMP0811

Edgard Enrique Figueroa SALAS L0004MVMV0811

Soyemi OLARINDE L04409SISI0811

Ersin KARA L0022ECEC0811

INDEX

Simply Wireshark 3

1. TASK 1: SKYPE 4

a) Set up a group video calling for two or three people and use examine the Packet List and Packet Details Pane 4

b) From Wireshark Packet List and Packet Details Pane, use reverse engineering to understand how Skype for group video calling works 7

2. TASK 2: CHALLENGE 10

a) Troubleshooting the failure to download successfully to a browser on a computer 10

b) How to identify data traffic on a network that is requested by users 11

3. BIBLIOGRAPHY 13

Simply Wireshark

Lead developer, Gerald Combs created the free software Wireshark (originally called Ethereal); a packet or protocol analyzer in 2006. The purposes of Wireshark are quite diversified. It could be used for the following; analysis of network problems, detection of intrusion and misuse by internal and external forces, screening of bandwidth utilization, running statistical analysis on data in motion, debugging client/server communications, spying on other networks, and identifying data traffic on a network that is requested by a user.

1. TASK 1: SKYPE

a) Set up a group video calling for two or three people and use examine the Packet List and Packet Details Pane

Process of Skype Client During Login

* Authenticates its user name and password with the login server

* Advertises its presence to other peers and its buddies

* Determines the type of NAT and firewall behind

* Discovers online Skype nodes with public IP addresses

* Checks the availability of latest Skype version

Packet List and Packet Details Pane During Video Call

Server Certificate and Location Details...