VoIP stands for Voice over Internet Protocol, though it has also been called “Internet telephony.” It allows for the making of voice calls over a (usually broadband) Internet connection instead of a regular phone line. It was invented in 1995 and was a pretty huge deal at the time. That’s because long-distance phone calls made in the U.S., both domestic and especially international, were enormously expensive. The ability to use an existing Internet connection for calls saved a ton of money, especially for businesses.
But with the switchover to VoIP communication there came a new set of security challenges. Tapping old fashioned telephones required physically compromising the connecting lines or the phone itself.
Voice data travelling across local and wide area networks, with numerous routers along the data path, is actually more vulnerable to unauthorized access by bad actors. What follows is a short overview of security measures for VoIP systems, or you can learn more at Centra IP Networks.
Ensure Local Network Security
Even for organizations not using VoIP, the importance of network security cannot be overstated. Security measures should go far beyond just requiring complex passwords and staying on top of firmware and software updates. Use a strong firewall that is VoIP-aware. Implement a security framework like AAA (Authentication, authorization and accounting) to control access in and out of the local network, and employ a VoIP compatible protocol such as DIAMETER. Install an Intrusion Detection System (IDS) to detect and report unusual or malicious network traffic at the outset of an attack.
Encryption Encryption Encryption
Another important security tool is data encryption. It’s not just for financial information any more. Protocols such as Secure Real-time Transport Protocol (SRTP) can encrypt voice data (the actual audio stream). Transport Layer Security (TLS) and Secure Sockets Layer (SSL) can be used to protect signaling data such as names and phone numbers.
Choose the Right Provider
The two main factors to look at when choosing a VoIP provider are uptime and call quality. In addition to those, you want a service that provides two-factor authentication (2FA), especially if you do not already have it employed on your network. Consider what the provider offers as far as extra features such as call recording, voicemail-to-email, and integration with your CRM system. As with any I.T. purchase, look long and hard at the provider’s abilities as regards customer support, scalability of solution, and contract terms (including options for trial periods).
Make the Right VoIP Security Choice
The benefits of VoIP communications are now well recognized, and today the technology is both mainstream and stable. However, as an aspect of an IT infrastructure, security is crucial. Sensitive communications must be protected from interception. Securing VoIP systems prevents unauthorized access, ensuring confidentiality and integrity of voice and data transmissions. Without proper security measures, businesses risk data breaches, financial loss, and compromised client information. Additionally, secure VoIP systems help maintain compliance with regulatory standards and safeguard against cyberattacks, ensuring reliable and safe communication for business operations.
