Tcpdump Tcpdump is a commandline network analyzer tool or more technically a packet sniffer. It can be thought of as the commandline version of wireshark (only to a certain extent, since wireshark is much more powerful and capable). As a commandline tool tcpdump is quite powerful for network analysis as filter expressions can be passed… Read More »
Libpcap Libpcap is a packet capture library for linux which can be used to sniff packets or network traffic over a network interface. Pcap Documentation gives a description of the methods and data structures available in the libpcap library. To install libpcap on your linux distro you can either download the source from the website… Read More »
Packet sniffer Packet sniffers are programs that intercept the network traffic flowing in and out of a system through network interfaces. So if you are browsing the internet then traffic is flowing and a packet sniffer would be able to catch it in the form of packets and display them for whatever reasons required. Packet… Read More »