One of the most common methods that

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ou also need a firewall between your hardware and the internet. However, many older firewalls don’t work well with VoIP traffic and can cause disruption to the service. You must, therefore, get a firewall that is VoIP-friendly and allows call traffic to pass through, while still being able to block suspicious activity.

hackers will use to try cambodia telegram to access VoIP systems is using stolen credentials. You must make your staff aware of the risks posed by phishing attacks aimed at getting hold of their passwords. Make sure that strong passwords are used and if you have remote users, they should connect via a VPN. It’s also worth setting up call restrictions so that only authorised users can call overseas, for example. You might also choose to block codes for certain countries or for premium rate numbers to prevent abuse of the system.

It’s worth performing a regular audit of activity on your VoIP system. This will give you early warning of any potential abuse by insiders or other suspicious activity.

If you handle confidential information then it’s also worth talking to your service provider about encryption for your VoIP service. This means that even if call packets are intercepted, they will be useless to the attacker.