@network.system1: 🔌 Common Network Ports Knowing common ports is essential for troubleshooting, firewall configuration, and network security. Some ports you’ll encounter frequently: 🌐 80 / 443 — HTTP / HTTPS 🔐 22 / 3389 — SSH / RDP 📁 20 / 21 — FTP Data / Control 📧 25 / 465 / 587 — SMTP 📨 110 / 995 — POP3 / POP3S 📨 143 / 993 — IMAP / IMAPS 🌍 53 / 443 / 853 / 5353 — DNS / DoH / DoT / mDNS 🗄 3306 / 5432 / 1433 — MySQL / PostgreSQL / MS SQL ⏱️ 123 — NTP 📡 161 / 162 — SNMP These numbers become especially important when working with firewalls, NAT, ACLs, and network troubleshooting. Save this cheat sheet — you'll use these ports often. 🔥 #Networking #CyberSecurity #TCP #NetworkEngineer #SysAdmin

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Sunday 27 September 2026 21:54:38 GMT