VoIP Explained #1: When Do You Need OpenSIPS or Kamailio? The Evolution of Softswitch Architecture
The Simplest Architecture – The 1-Node Architecture 1-Node Architecture: 1 FreeSWITCH Node In the simplest VoIP architecture, you only need to deploy a single FreeSWITCH server with a public IP address to start providing calling services. Extensions register directly to the FreeSWITCH server, and the server connects directly to SIP trunks. However, it doesn’t take long before you start encountering the following problems: Security Issues Direct Internet exposure FreeSWITCH is directly exposed to the public Internet, which inevitably means it will be attacked. While trunk connections can be protected with network policies, extension IP addresses are often dynamic. ...