In our last VoIP installment, we looked at the main reasons why SIP has become a widely adopted protocol, but we left details of the protocol’s inner workings fairly vague. This article will drill ...

A static IP address gives a fixed address to your computer on the local network at your business. Port forwarding is used by computers on the Internet to connect to a specific device on your internal ...

For all the technology behind Voice over IP (VoIP), you'd expect that it would work on every network, but this unfortunately isn't the case. Network Address Translation (NAT) is a common practice used ...

So, I need to forward my ISP SIP service from a Mikrotik hEX S to all connected devices. The authentication part would be done client side, both on a Computer and a Phone (Zoiper). I extracted the ...

The SIP protocol is commonly used for IP telephone communications. Unfortunately it’s notorious for having issues with NAT traversal. Even some major vendors can’t seem to get it right. [Stephen] had ...

Also called "port mapping," port forwarding is directing traffic from the outside world to the appropriate server inside a local TCP/IP network. Internet services are identified by a standard port ...