Port 5060 (TCP/UDP) — SIP

Session Initiation Protocol (VoIP).

🔒 Runs locally — your input never leaves this browser tab

Heavily scanned for toll fraud. Restrict to your provider IPs.

Check if port 5060 is open

On the server, see what is listening:

sudo ss -tulpn | grep ':5060 '

From another machine, test reachability:

nc -zv your-server.example.com 5060

With UFW (Ubuntu/Debian):

sudo ufw deny 5060

With firewalld (RHEL/AlmaLinux/Rocky):

sudo firewall-cmd --permanent --remove-port=5060/tcp && sudo firewall-cmd --reload