Best practices for a secure VoIP system

Best practices for a secure VoIP system

Voice over Internet Protocol (VoIP) phone systems have helped businesses make great strides towards improving communication within the workplace. Compared to an analog phone line, VoIP allows employees to route calls via the internet. The technology can also be integrated with various applications, which can make collaboration with customers faster and more convenient.

It’s not all sunshine and rainbows with VoIP, however. When multiple locations and users are connected to the same network and something goes wrong, your phone system takes a massive hit. This can cause a drop in productivity, as well as security gaps. And if both your productivity and security are down, your organisation can suffer downtime losses and incur operating costs.

Here are the most effective measures to keep your VoIP systems secured:

#1. Patch regularly

If your VoIP equipment isn’t properly maintained, you’ll likely encounter constant downtime caused by bugs or glitches. By maintaining your equipment properly and implementing patches and hotfixes accordingly, you’re taking a proactive measure against potential cyberthreats such as eavesdropping and ransomware attacks.

#2. Use firewalls

Firewalls reduce the risk of malicious code infiltrating your private network. This is done by allowing or blocking specific apps and network traffic based on rules defined by your organisation.

For instance, if your business expects a high volume of incoming and outgoing calls, it’s important to install a firewall program between the dedicated server for VoIP and the outside network. It will act as a barrier and route traffic accordingly.

Advanced firewalls can even detect and block data packets from IP addresses that may compromise your system with distributed denial of service (DDoS), an attack that bombards the telephone network with multiple service requests to cause the system to go down.

#3. Use an intrusion prevention systems (IPS)

An IPS is a form of network security that works to detect and prevent known threats. It continuously monitors your network for overall load and identifies when the number of sessions exceeds a set threshold. It will close connections whenever necessary to avoid service degradation.

IPS also monitors suspicious network behaviour that can indicate a potential attack. The technology measures traffic packets to prevent infiltration by cybercriminals who want to steal customer and billing information.

#4. Analyse call behaviour

Monitoring call behaviour makes it easy to detect abnormal patterns or routes. By doing this regularly, a business can identify fraudulent and improper calls that can affect the VoIP system’s security. Call blocking software can be used to filter out these calls.

#5. Establish a strong password policy

Instead of complicated strings of text, the National Institute of Standards and Technology (NIST) is pushing for the use of passphrases for login credentials. These are composed of a sentence or a combination of words, such as “supportwestchorebrand” or “strawberriesandcream5627”. Long passwords with dictionary words are easier to remember and exponentially harder to crack.

It’s also a good idea to use multifactor authentication (MFA). MFA involves the use of more than one means of identity verification. For instance, an employee can be prompted to enter a four-digit code sent to their smartphone after they’ve entered their password. Through this, even when a cybercriminal gets ahold of the user’s password, they still won’t be able to get through.

Businesses are also advised to require a password reset after a data breach to minimise the damage.

#6. Use virtual private networks (VPNs)

VPNs are popular because of their ability to unblock content, whether it’s a government-imposed ban or a geo-blocked website. Using VPNs for your VoIP can also be beneficial. VoIP services are already very secure due to built-in encryption.

However, this cannot fully protect you against hackers trying to infiltrate your connection. When you use a VPN, you’re securing your connection and reducing the chance of cyberattacks.

When it comes to a reliable and easy way to stay connected to clients, employees, and partners, nothing comes close to Office Tek’s VoIP service. With a modern and user-friendly interface, businesses are ensured a better communication experience. Call us today.

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