How to Ensure Optimum Security of Your VoIP?

Until today, security of Voice-over Internet Protocol (VoIP) has been overshadowed by its cost-efficiency and extensive features. Security isn’t much of a problem about this technology as most voice-over IP before remained on the local and wide area enterprise networks. However, as voice-over IP becomes more widespread, households and enterprises are slowly becoming a subject to the same security risks that affected data networks over the decades.


In order to achieve optimum security with your VoIP network, there are a couple of things you can do.

1. Use Firewalls

A firewall is a program that serves as a barrier between your network and unauthorized entities, like virus monger and hackers; and is responsible in filtering data that goes in and out of the network. If your network is controlled by a certain server, the barrier can be installed directly in the server; therefore protecting all devices and machines connected on the same network. Some of the commonly used firewalls by users are the Zone Alarm, and Kerio.

2. Enforce Authentication

An authenticating system is simply providing your crystal voip telephony system from Singapore a username and password (or any other secret information) every time you use your voice-over IP network. This way, the authorized users are distinguished from unauthorized ones. Unfortunately only a few VoIP users make use of this feature to protect their network, even if many have said that this is among the best security methods out there.

3. Use Encryption

Once data packets containing critical information travel over networks, they are susceptible to unauthorized access and can be easily stolen. However, a critical piece of stolen data is useless if it cannot be read and understood. By encrypting data, the content is changed into unreadable form, maintaining the privacy of the information as it passes through networks. When the data reaches its legitimate destination, the encrypted data can be converted back to its readable form (decrypted). There are three ways to encrypt voice-over IP calls, and they are as follows:


• Using Zfone

Zfone does its works on the unencrypted voice-over IP software watching for data packets going in and out of your network. It ciphers the data, encrypting the voice call and therefore securing them. There’s also a man-in-the-middle attack counteract that prevents any chances of data theft while data packet is travelling over networks. Before considering Zfone as your means of security for your VoIP Singapore, take into account that the software must be installed in all end users and that it doesn’t work with Skype because it uses a closed source protocol, which is not compliant with the standard voice-over IP protocol.

• Using Voice-over IP Software with Built-In Encryption

There are voice-over IP applications that have built-in encryption feature for data packet protection. If you wish to integrate this security feature, try to look for voice-over IP software that’s compatible with all your voice-over IP applications. Using such software will make it harder for unauthorized intruders to penetrate through your system and it may no longer require the other end user to have the same voice-over IP application installed for the encryption to work.

• Using Virtual Private Network (VPN)

A VPN can encrypt all of your Internet traffic, including your VoIP calls, routing them through the encrypted OpenVPN tunnel. Although diverting calls through the VPN tunnel will slightly increase the bandwidth requirement, this is deemed beneficial and is a lot more secure than going through the standard route. One benefit of using VPN is that if your firewall is blocking your VoIP calls, there’s no need to disable the firewall as it can get around your Internet filter.

As a user, you are obliged to do the best you can to protect your voice-over IP network. However, it would also be great to seek help from professional service providers. VoIP Singapore service providers play a very important role in ensuring optimum security of your voice-over IP calls as advance levels of authentication and encryption enforcement are often out of reach for non-I.T. knowledgeable individuals.


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