4. Why don't you use a VPN? If you used a udp-based VPN nobody would even know the port was open (connectionless) and you could even require a preshared key, wh

4. Why don't you use a VPN? If you used a udp-based VPN nobody would even know the port was open (connectionless) and you could even require a preshared key, which is the more secure equivalent of port knocking. I love this. I absolute hate VPN. It's waaaay too complex and I fear vulnerabilities in that waaay more than other software. So, I'll stick with port knocking. It's much safer, IMO.