Network address translation traversal is a computer networking technique of establishing and maintaining Internet protocol connections across gateways that implement network address translation (NAT).

What is a traversal server dolphin?

Netplay is a defining feature of Dolphin: it allows you to set up online sessions for any GameCube or Wii title with a local multiplayer mode, without the problems or limitations of the Nintendo Wi-Fi Connection or hassle of the BBA. It is improving regularly, and GameCube Netplay should be painless.

Why is Dolphin netplay not working?

Some security software (antivirus, firewalls) can get overzealous and block things they're not supposed to. Check your firewall and make sure it doesn't have any rules configured against Dolphin. ... Temporarily turn off your security software and try hosting/joining the Netplay session once more.