Discovered this excellent resource for network port spikes, firewall rules, malware attacks, etc

SG TCP/IP Ports Database (speedguide.net)

SpeedGuide’s TCP/IP Ports contains a comprehensive, searchable database of official and unofficial tcp/udp port assignments, known vulnerabilities, trojans, applications use and more. The ports, services and protocols database contains combined information derived from IANA, numerous port lists, as well as our own research and user submissions. You can search by application/service name, or simply click on port numbers below for detailed information.

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