Data verified Jun 2026
ADYour product here. Reach security decision-makers.Launch a campaignfatt Description
A script for extracting network metadata and fingerprints such as JA3 and HASSH from packet capture files (pcap) or live network traffic. The main use-case is for monitoring honeypots, but you can also use it for other use cases such as network forensic analysis. fatt works on Linux, macOS and Windows. Note that fatt uses pyshark (a python wrapper for tshark) and therefore the performance is not great! But that's not a big issue as obviously this is not a tool you use in production. You can use other network analysis tools such as Bro/Zeek, Suricata or Netcap for more serious use cases. Joy is another great tool you can use for capturing and analyzing network flow data. Other than that, I'm working on a go based version of fatt which is faster, and you can use its libraries in your gopacket based tools such as packetbeat. I released the initial version of its gQUIC library (QUICk). Features Protocol support: SSL/TLS, SSH, RDP, HTTP, gQUIC. To be added soon: IETF QUIC, MySQL, MSSQL, etc.
fatt FAQ
Common questions about fatt including features, pricing, alternatives, and user reviews.
fatt is A script for extracting network metadata and fingerprints such as JA3 and HASSH from packet capture files or live network traffic. It is a Security Operations solution designed to help security teams with PCAP, Packet Capture, Network Forensic Analysis.
fatt is a free Security Operations tool. This makes it accessible for organizations of all sizes, from startups to enterprises. Visit https://github.com/0x4D31/fatt/ for download and installation instructions.
Popular alternatives to fatt include:
1.BW-Pot - BW-Pot is an interactive web application honeypot that deploys vulnerable applications to attract and monitor HTTP/HTTPS attacks, with automated logging to Google BigQuery for analysis. (Free)
2.rdppot - A honeypot system that simulates RDP services on port 3389, automatically assigns virtual machines to incoming connections, and captures comprehensive forensic data including packet captures and disk images. (Free)
3.Tracebit Dynamic Security Canaries - Cloud-native deception platform deploying dynamic security canaries (Commercial)
4.Anantis TrapEye - Detects intruders the moment they interact with your network. (Commercial)
5.Guardpot AI-Powered Cyber Deception - AI-powered deception platform using honeypots to detect & disrupt attacks (Commercial)
Compare all fatt alternatives at https://cybersectools.com/alternatives/fatt
fatt is for security teams and organizations that need PCAP, Packet Capture, Network Forensic Analysis. It's particularly suitable for small to medium-sized teams looking for cost-effective solutions. Other Security Operations tools can be found at https://cybersectools.com/categories/security-operations
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