How to secure your VoIP phone system against hackers

October 13, 2023

VoIP systems can be vulnerable to a range of attacks, including call hijacking, eavesdropping and denial of service (DoS) attacks. All of these can cost your business money, not only in terms of putting it right, but also missed customer calls - not to mention your reputation.

In this day and age, cyber security is a hot topic. Making sure your VoIP (Voice over Internet Protocol) digital phone system doesn’t fall victim to hackers and other security threats is essential to your business success.

So what can you do to secure your VoIP digital phone system? Let’s take a look.

First off, use strong passwords

Make sure that the devices you plan to use with your VoIP system, including your smartphone, tablet or PC, have strong, unique passwords. A good mix of numbers, special characters and letters is recommended. Ask other members of your team to do the same, avoiding any passwords that are very common or easily guessable.

Have a top-notch firewall and network segmentation

Check that your VoIP network is behind a secure firewall and that access to your network is restricted. Only allow traffic from sources you trust, and block known malicious IP addresses. Also, separate VoIP traffic from other data traffic by segmenting your network. This will limit how far an attack can spread, helping you contain any security breaches.

Use encryption

Enabling encryption protocols like Secure Real-Time Transport Protocol (SRTP) is always a good idea. It means if a hacker was to intercept a voice call, they won’t be able to eavesdrop.

Update and patch your VoIP digital phone system regularly

Keep all your VoIP equipment up to date, including phones, tablets, routers and other hardware. Check regularly to see if there are any updates or patches from your VoIP equipment provider (choose bOnline and we can help you with this!)

Implement strong authentication

Wherever you can, use multi-factor authentication (MFA). This adds another layer of security to user accounts and access. It’s also worth limiting the number of failed login attempts, as well as having a documented lockout policy.

Educate users

If you employ any team members who will be accessing or administering your VoIP system, spend time explaining issues like phishing attacks and password security to them. Also, encourage them to speak up if they think there’s anything suspicious..

Restrict access

Again, if it’s not just yourself using your VoIP phone system, make sure you know exactly who has access at all times. Consider limiting the number of users you have too.

Carry out security audits

Conduct security audits and penetration testing regularly (again, this is something we can help with) so that any weaknesses can be fixed before they become a problem.

VoIP digital phone systems from bOnline are some of the most secure around

Our VoIP digital phone systems come packed with all the latest security and business-friendly features you’d expect. They’re some of the best on the market in fact.

Our expert team is also on hand to set everything up for you, and offer advice if you need it.

We also know that choosing the right VoIP system for your small business can be daunting. That’s why we offer a free 7-day trial with no obligation, so you can test everything out before committing.

You really have nothing to lose, and of course you’ll also protect your business from the landline switch off.

Sign up for your free 7-day trial or get in touch on 0203 617 9950.


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