MWSG Network Consulting Congratulations!!! You have just been hired on as a Netw

Question

MWSG Network Consulting Congratulations!!! You have just been hired on as a Network Specialist by MWSG Network Consulting. The clients of Melville's Coffee Café are reporting that they are having a tough public Wi-Fi network at the s on a similar problem you have seen before at school, you suspect that there may be an issue with association frames. time connecting to the hop. You are sent by MWSG Network Consulting to fix the problem. Based 1. You think that you'll want to use Wireshark to confirm your diagnosis. What equipment will you take to the shop to assist you with troubleshooting? 2. Once you start Wireshark, what steps do you take? While you are working you suddenly realise that there are at least two other WLANs visible to clients at the shop! How do you know you are working with the Melville's Coffee Café wireless network? 3. 4. You happen to notice that 2 APs are running on channel 1. Could this be the problem? Discuss. You get back to the office and your boss wants you to check something in the beacon frames, but you try to do this and realize you don't have any saved. What did you do wrong? 5.

Explanation / Answer

1.

Tracing the main cause of network issue is a form of well honed skill, and indispensable tools. After a great deal of practice, network engineers bring a skilled eye to the troubleshooting process. That is aware of common drawback and remediation methods. They trust on powerful tools to help get to the root of network and application issues. There are a number of tools available to deal woth any kind of network issue:

All of them are tools to help us with the issue, but we have been told to use the open source tool wireshark. Its an open source tool for network engineers hence comes with mostly likeable. Wireshark is not only for wired network, wireless engineers can also use it and help to troubleshoot issues. Some of the tools associated to monitoring / tracing are:

ExtShark: is web-interface to tshark. It will bring dumping to cloud.

Homer: SIP Capture Server & Agent

HUNT: Allows for sniffing of machines in a switched network LAN as well as providing a very easy to use API to modify the intercepted frames before they are forwarded. Intercept and Modify. (GPL, Linux)

Impacket : It is a collection of Python classes focused on providing access to network packets (Apache, Linux).

ipsumdump : summarizes TCP/IP dump files into a self-describing ASCII format easily readable by humans and programs.

junkie : A real-time packet sniffer and analyzer (AGPLv3, Linux)

justsniffer : is a tcp packet sniffer. (GPL, BSD/Linux/Win32)

Mojo Packets : Mojo Packets™ is web based tool which aims to simplify trace based analysis and troubleshooting of connectivity issues observed in Wi-Fi (IEEE 802.11) environments.

Moluch : Moloch is an open source, large scale IPv4 packet capturing (PCAP), indexing and database system.

Mu DoS : converts any packet into a DoS generator

NetSleuth : is a free network forensics and pcap file analyser. It provides offline analysis for incident response, and live "silent portscanning" functionality. (GPL, Windows)

netsniff-ng : is a free, Linux network analyzer and networking toolkit.

2.

In a window OS, we need network card capable of capturing wireless frames. The in build network card is not competent of this because drivers may not allow a user to manually select a channel, or to place the wireless network in monitor mode.

After the troubleshooting options also network can be slow for many reasons, we can resolve them by:

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