Network Port: 995
Network Port Reference Guide
Registered Service Name
POP3 over SSL (POP3S)
Transport Protocol
TCP
Functional Overview
Port 995 is the secure, TLS-encrypted port for Post Office Protocol version 3 (POP3) operations.
Security Risks & Vulnerabilities
Secure. Ensure legacy TLS protocol versions (1.0, 1.1) are disabled on the server side.
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 995/tcp
Block Command
sudo ufw deny 995/tcp
iptables Firewall Rules
Allow Command
sudo iptables -A INPUT -p tcp --dport 995 -j ACCEPT
Block Command
sudo iptables -A INPUT -p tcp --dport 995 -j DROP