Snoop
The Snoop file format is some old format that comes from network capturing in the Sun Solaris environment (similar to tshark and tcpdump) but is still used for some network packet capturing devices.
Information on the Snoop file format can be found in :
https://gitlab.com/wireshark/wireshark/-/wikis/snoop
https://tools.ietf.org/html/rfc1761
