How do I use Linux commands to capture packets on the network?

Hi, all!

Good day to you!

Do you know how to use Linux commands to capture packets on the network?

Please see below:

This command is used to capture packets on the server when the MU and DCG receive streams.

Common formats:

1.By IP Address

tcpdump -i "NIC name" host "Filter IP address" -s0 -w/home/test.pcap

For example: tcpdump -i eth0 host 3.4.120.63 -s0 -w/home/test.pcap 

2.By PORT

tcpdump -i "NIC name" port "Filter PORT" -s0 -w/home/test.pacp

For example: tcpdump -i eth0 port 40010 -s0 -w/home/test.pcap

Thanks!