Correct mapping of the internal IP addresses to external IP addresses is essential to enabling unhindered VoIP communication through NAT gateways and firewalls. STUN, TURN, and ICE not only ensure a transparent transition via NAT gateways but also improve the security of the SIP environment as a whole.
WebRTC has the potential to bring high-quality, easily developed, and interoperable real-time voice, video, and data communication to all manner of applications in web browsers.
Ethernet is so popular because it simply works and is inexpensive. However, the administration side looks a bit more complicated: For the network to run smoothly, the admin might need to make important decisions about the Spanning Tree protocol.
What happens when an intruder with a laptop parks at an empty cubicle and attaches to your local network? If you don't want to find out, it might be time to think about implementing some switch port security.
In classical network settings, software-defined networking (SDN) is a nice add-on, but in clouds, virtual networks are an essential part of the environment. OpenStack integrates SDN technology through the Neutron module.