Install sniffit by entering the following commands in the terminal:
sudo apt update sudo apt install sniffit
Description:
packet sniffer and monitoring tool
Sniffit is a packet sniffer for TCP/UDP/ICMP packets over IPv4. It is able to give you a very detailed technical info on these packets, as SEQ, ACK, TTL, Window, etc. The packet contents also can be viewed, in different formats (hex or plain text, etc.). . Sniffit is based in libpcap and is useful when learning about computer networks and their security.
Homepage: https://github.com/eribertomota/sniffit
Version: 0.4.0-2
Section: universe/net