Network Port: 80
Network Port Reference Guide
Registered Service Name
HTTP (Web Traffic)
Transport Protocol
TCP
Functional Overview
Port 80 is the standard port for unencrypted Hypertext Transfer Protocol (HTTP) web server communications.
Security Risks & Vulnerabilities
Zero encryption. Session cookies, payloads, and forms are exposed to packet sniffing. Modern sites redirect all Port 80 traffic to HTTPS (Port 443).
How to audit network port status
1. Scan Open Ports: Use our Port Scanner utility to verify if this port is actively listening on your host.
2. Verify Encryption: Audit the service layer to confirm SSL/TLS is protecting transmission payload.
3. Hardening Rules: Apply the firewall instructions below to shut down unauthorized inbound ports.
UFW Firewall Rules
Allow Command
sudo ufw allow 80/tcp
Block Command
sudo ufw deny 80/tcp
iptables Firewall Rules
Allow Command
sudo iptables -A INPUT -p tcp --dport 80 -j ACCEPT
Block Command
sudo iptables -A INPUT -p tcp --dport 80 -j DROP