If youРІР‚в„ўre on a mission to find the right VPN, you may have come across the term РІР‚СљVPN passthrough.РІР‚Сњ
So what is it, exactly?
It all starts with something called the Network Address Translation, or NAT, firewall.
NAT gives the same IP address to all devices connected to a router and hides them from the outside world. It also filters the traffic sent to the devices making sure that you only receive the information you requested.
To do this, NAT needs certain information about the inbound and outbound connections. The problem arises when outdated VPN protocols try to get through. Their way of encryption doesnРІР‚в„ўt give NAT enough information, forcing it to block those connections.
VPN passthrough solves this problem for older VPN protocols РІР‚вЂњ like PPTP or IPsec РІР‚вЂњ by allowing them through NAT.
Most routers already have built-in VPN passthrough. If they donРІР‚в„ўt, thatРІР‚в„ўs fine.
Your router only needs VPN passthrough if you want to use a VPN that supports IPsec or PPTP protocols. However, these protocols are outdated and unreliable, and NordVPN no longer supports them.
Modern VPNs use more secure protocols such as OpenVPN and IKEv2/IPsec. They tunnel through NAT on their own so your router doesnРІР‚в„ўt need VPN passthrough at all.
My advice to you: instead of worrying about the outdated VPN passthrough technology, choose an advanced VPN, such as NordVPN.