An Introduction to VoIP Security

You may have heard of this word VoIP somewhere before and it may mean something about having the ability to call another person over the internet. That is partly true with today's increasing usage of internet bandwidth, VoIP is gradually creeping its high and to the corporate communication rather than the current standard that is used, and that is the PABX. Unfortunately, there is a little hitch with this since it is called VoIP Security.

Unlike the PABX system, VoIP directly uses the internet so that you can function correctly and as a result of that internet use, VoIP needs all current computing devices that is also used in a typical company. This places the responsibility of protecting even the VoIP from intrusions and denial and services information attacks to the hands of the network administrators.


You didn't have that with PABX since the PABX only handled phone calls, not internet traffic. But there's way to at least protect your VoIP clients from these types of attacks. The responsibility of protecting it really is further compounded because there isn't any single approach to protect both VoIP servers as well as the VoIP client computers using a single strategy. You will find multiple ways of protecting both of these assets from potential attackers and keeping them at bay.

The reason behind preventing attacks around the VoIP is always that just one malware which gets from the VoIP system could lead to the entire network shutting down, or perhaps in the truth of your Denial and services information attacks, no information reach you and you cannot send information to another location.

The easiest method to make VoIP security is simply by layering your software and hardware protection systems in every of the networks that you have, separating each and every network into small compartments which have direct links only in specific channels and links can't be interconnected.

Which means that you need to strengthen the malware and hardware protection of the servers, virtually separate the computers that are used for data from the machines attached to the VoIP phones and then strengthen the malware and virus protection of those computers too.

By separating computers that handle data exclusively in the equipment which use the VoIP phones, any sort of attack that's sent via VoIP can be contained right away. As there is no data within the network the location where the VoIP phone is connected, a probable intrusion is prevented.

You might now ask so how exactly does the network understand that the info that's being transmitted through the VoIP phone is legitimate or otherwise? Well, there can be authentication from the data packets that are sent back and forth in the local server to the VoIP phones. Addititionally there is what we call virtual LAN network to isolate these sections from other sections inside same network.

Overall, there are plenty of the way to apply VoIP the reassurance of your network that wont cost that much, it is only how you manage to implement virtual LAN networks, compartmentalization and segmentation of each of these networks to ensure that any sort of intrusion attempt will not succeed, or at the very least, the layered approach to VoIP protection slows it right down to a crawl until it's stopped.
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