WIRESHARK:
Wireshark is a open source program to analyse and Troubleshoot the captured network traffic.
Wireshark is a open source program to analyse and Troubleshoot the captured network traffic.
Wireshark is also known as ethereal, wireshark is developed in 1990's, this is inexpensive compared to expensive alternate method to sniff packet using hardware.
Traffic capture and analyses clear lot of issues.
Uses of packet analysis:
- Used to analyse network problems.
- Used to detect network intrusion and network misuses.
- Used to perform regulatory compliance.
- Also used to monitor Bandwidth utilization.
- Most importantly used to verify endpoint security status.
To see all traffic on switches they use a port monitoring and specific SPAN port configuration. Also uses full duplex with inline traffic. Wireshark is built in cisco nexus 7k series.
Common Packet Analyser:
- Cain and Abel is tool used to recover password by capturing traffic.
- Narus insight is tool used to monitor all Internet traffic.
- TCP dump runs from command line interface, for example we can run TCP dump in Linux box and checkpoint firewall.
- DSniff tool used to monitor all network for interesting traffic, for example email user name and password.
- ETTErcap tool capture intercepts traffic on a network segment
Packet capture tools are important for all network engineer to Troubleshoot network problems.
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