![]() netstat reads from /proc files, ss reads directly from kernel, so ss is much faster. tshark -i eth4 -R ip.src=192.168.56.101 & ip.src=192.168.56.102īoth of the above tools are useful to display socket connection details. For more details on Wireshark/tshark filters, please refer here. Read 500 packets and write to pcap file: tshark -c 500 -w pkt5.pcapįilter with a particular source and destination ip address. Following are some examples that I use:Ĭheck packet detail and raw packet from pcap file: tshark -r pkt5.pcap -V ![]() Filtering uses the same syntax as the GUI tool. Tshark is a command-line for Wireshark and is used to capture and analyze packets. The options above gives proper timestamp, count of 5 packets, ip address format, interface eth0 and filters tcp and src ip address=192.168.0.101 I refer to these links( 1, 2) as quick reference of examples for tcpdump.įollowing is 1 example : tcpdump -c 5 -tttt -n -i eth0 tcp and src 192.168.0.101 For more information on pcap fileformat, this is a good link. It uses the pcap fileformat for packet capture. Tcpdump is a nice and simple command-line packet capture and analysis tool. We need to add route entry for multicast address to corresponding interface so that multicast packets from client and server goes out in the correct interface. When we do “Ctrl-C”, Server sends igmp leave.Ĭlient sends UDP multicast traffic towards the server. Iperf is used for tcp and udp performance measurement. ![]() I will cover the following tools in this blog. I will try to keep this blog updated as I come across more tools. ![]() There are few other miscellaneous networking tools that I use and I am planning to cover them in this blog. I covered traffic generation tool Ostanito in another blog. In that blog, I covered Mininet, dpctl, packeth, Wireshark, Postman. Earlier, I had written a blog on tools that I used with Opendaylight.
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