TFTP Firmware Push to Network Device
This rule detects TFTP (Trivial File Transfer Protocol) traffic on UDP port 69, specifically looking for a content pattern that indicates a firmware push. The pattern '|00 02|' at the beginning of the UDP payload suggests a TFTP write request (opcode 2), which is commonly used for uploading files, including firmware, to network devices. The rule is designed to alert on such activity directed towards the local network ($HOME_NET).
Suricata
