Most small business VoIP phone systems use a process known as Session Initiation Protocol (SIP) to facilitate calls. Popular apps like Skype, and GoToMeeting use SIP. However, hackers can use SIP to gain access to your VoIP network and either disable it or create spam calls.
As convenient as VoIP phone systems are, recent information has shown that they are vulnerable because SIP was never designed to be secure. Your VoIP system could be vulnerable to hackers because of this. Below, we've listed steps that will help you to protect your VoIP calls from SIP hacking.
How to Protect Your VoIP System from SIP Vulnerabilities:
1. Encrypt Your Information.
You can encrypt your communications using firewalls from third-party companies, or using firewall solutions that are offered by your VoIP provider. If your calls are unencrypted, they can easily be intercepted over the internet.
2. Use a VPN.
A Virtual Private Network is a great solution if you want to make your VoIP calls more secure. Your off-site or remote employees can access your private network through a VPN. Essentially, this allows them to establish a tunnel directly to your network, rather than opening up a line of communication from a public network that can easily be attacked.
3. Use Better Passwords.
It may sound simple, but one of the easiest ways to improve the security of your system is with complex passwords that are difficult to break. Instead of using default admin passwords, choose a unique password for your VoIP system. In addition to this, make sure you sign out after every session to increase your SIP security.