Free VPN Port Checker
Test if your VPN ports are open and accessible
Check VPN Port Connectivity
This tool tests if common VPN ports are open and accessible from your current connection. Select which VPN protocols you want to test or add custom ports.
| Protocol | Port | Type | Status | Response Time |
|---|
Understanding VPN Ports and Protocols
VPNs (Virtual Private Networks) use various ports and protocols to establish secure connections. If these ports are blocked by your network or ISP, your VPN may not work properly. Understanding which ports are required for different VPN protocols can help troubleshoot connection issues.
Common VPN Protocols and Their Ports
| Protocol | Default Ports | Security Level | Speed | Use Case |
|---|---|---|---|---|
| OpenVPN | UDP 1194, TCP 443 | High | Medium to High | General use, good balance of security and speed |
| WireGuard | UDP 51820 | High | Very High | Modern protocol with excellent performance |
| IKEv2/IPsec | UDP 500, 4500 | High | High | Mobile devices, supports network switching |
| L2TP/IPsec | UDP 1701, 500, 4500 | Medium-High | Medium | Good alternative when OpenVPN isn't available |
| PPTP | TCP 1723, GRE 47 | Low | High | Legacy protocol, not recommended for security |
| SSTP | TCP 443 | Medium-High | Medium | Windows systems, works well through firewalls |
| SoftEther | TCP 5555, 992, 443 | High | High | Versatile protocol that can bypass restrictions |
Why Ports Get Blocked
There are several reasons why VPN ports might be blocked:
- Network Restrictions: Corporate, school, or public networks often block VPN ports to enforce usage policies.
- ISP Blocking: Some Internet Service Providers block VPN ports in certain regions or countries.
- Firewall Settings: Your local firewall or router settings might be blocking VPN traffic.
- Deep Packet Inspection (DPI): Advanced filtering techniques can identify and block VPN traffic regardless of port.
Solutions for Blocked Ports
If you find that your VPN ports are blocked, here are some potential solutions:
- Change Protocols: If one protocol is blocked, try another. For example, if UDP ports are blocked, try TCP.
- Use Port 443: This port is used for HTTPS traffic and is rarely blocked. Many VPNs can be configured to use this port.
- Obfuscation: Some VPNs offer obfuscation features that disguise VPN traffic as regular web traffic.
- Try Different Servers: Sometimes only specific servers or regions are affected by port blocking.
- Use a Stealth VPN: These are specifically designed to bypass restrictions and port blocking.
Port Forwarding for VPN Servers
If you're running your own VPN server, you'll need to ensure proper port forwarding:
- Router Configuration: Set up port forwarding in your router's admin panel to direct VPN traffic to your server.
- Firewall Rules: Configure your server's firewall to allow traffic on the VPN ports.
- ISP Limitations: Be aware that some ISPs block incoming connections on certain ports or don't allow servers on residential connections.
Security Considerations
When working with VPN ports, keep these security considerations in mind:
- Avoid PPTP: This protocol has known security vulnerabilities and should be avoided when possible.
- Regular Updates: Keep your VPN software and server updated to patch security vulnerabilities.
- Limit Open Ports: Only open the ports you actually need for your VPN connection.
- Use Strong Authentication: Ensure your VPN is configured with strong authentication methods.