Security & Networking Protocols – Quick Reference
Here’s a high-level overview of Internet protocols most relevant to security tools (firewalls, AVs, IDS/IPS, VPNs, proxies, and EDRs):
Transport & Network Core: TCP, UDP, IP (IPv4/IPv6), ICMP, ARP – foundational packet transport and routing.
Secure Communication: TLS, SSL, SSH, HTTPS, IPsec, WireGuard, OpenVPN – encryption and authentication.
Web & Proxy Traffic: HTTP, HTTPS, FTP, SFTP, DNS – monitored by proxies and DPI systems.
Email...