does stun client launch UDP server to get incoming traffic

0
votes

I want to know if the STUN client (like stun-client on OpenWrt) open an UDP server to get incoming packet (ether than binding response) or just send binding request to get the public IP address and port.

1
linuxudpopenwrtstun

1 Answers

1
votes

STUN is a client-server protocol, but that doesn't mean that a STUN "client" can be used as STUN server to get server-reflexive address. It doesn't open any port which will act as STUN server (like port 3478).