NATläbipääsu
NATläbipääsu, a term originating from Estonian, translates to "NAT escape" or "NAT traversal" in English. It refers to a set of techniques used to enable direct communication between two devices that are both located behind separate Network Address Translation (NAT) devices. NAT is commonly used in home and small office networks to allow multiple devices to share a single public IP address. However, it complicates direct peer-to-peer connections, as devices behind NAT do not have publicly routable IP addresses.
NATläbipääsu techniques aim to overcome this barrier. Common methods include UDP hole punching, STUN (Session Traversal