Explain how to set up alerts for specific network activities, such as high bandwidth usage orunauthorized access attempts.➢ Perform a basic network traffic capture using Wireshark and analyze the results.

Setting up alerts for specific network activities and performing a basic network traffic capture using Wireshark involves several steps. Here's how you can do it:

1. Setting Up Alerts for Specific Network Activities:

   a. High Bandwidth Usage:

   i. Install a network monitoring tool that supports alerting, such as SolarWinds, Nagios, or PRTG Network Monitor.

   ii. After installation, configure the tool to monitor your network's bandwidth usage.

   iii. Set up an alert threshold for high bandwidth usage. This threshold will depend on your network's typical usage and capacity.

   iv. Configure the alert's notification settings. You can usually choose to receive alerts via email, SMS, or in-app notifications.

   b. Unauthorized Access Attempts:

   i. Install a network intrusion detection system (IDS) like Snort or Suricata.

   ii. Configure the IDS to monitor your network for unauthorized access attempts. This usually involves setting up rules or signatures that define what constitutes an unauthorized attempt.

   iii. Set up an alert threshold for unauthorized access attempts. This could be as simple as one attempt, or a certain number of attempts within a specific time period.

   iv. Configure the alert's notification settings, similar to the bandwidth usage alerts.

2. Performing a Basic Network Traffic Capture Using Wireshark:

   a. Download and install Wireshark from the official website.

   b. Open Wireshark and select the network interface you want to monitor.

   c. Click on the "Start" button to begin capturing network traffic.

   d. Let the capture run for a sufficient amount of time. The exact duration will depend on the nature of the network activity you're trying to analyze.

   e. Click on the "Stop" button to end the capture.

   f. Analyze the results. Wireshark provides a variety of tools for this, including filters, statistics, and graphical overviews. Look for any unusual or suspicious activity, such as high volumes of traffic to or from a particular IP address, or packets using protocols that aren't typically used on your network.

Remember, these steps may vary slightly depending on the specific tools you're using and the configuration of your network. Always refer to the documentation of your chosen tools for the most accurate information.