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STUN Servers

What is STUN? A STUN (Session Traversal of User Datagram Protocol [UDP] Through Network Address Translators [NATs]) server allows NAT clients (i.e. IP Phones behind a firewall) to setup phone calls to a VoIP provider hosted outside of the local network. What does a STUN server do? The STUN server allows clients to find out their public address, the type of NAT they are behind and the Internet s...
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Resolve one-way audio issues with Port Forwarding for VoIP/SIP

Using Port Forwarding for VoIP to overcome NAT issues. Port forwarding, sometimes referred to as tunneling, is a method of opening a port or ports in a router or firewall to allow communication from a party outside the network.  Port forwarding is the act of actually forwarding a network port from one network node to another.  This enables an external source  to reach a port inside the private LA...
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