These are the recommended firewall settings to protect your account from unauthorized use. This is especially important when using your own PBX via a trunk.
We strongly advise against connecting your IP PBX directly to the Internet without using a firewall. The probability of a ‘hack’ on an unsecured PBX is extremely high. Therefore always limit IP traffic from and to the telephone exchange on the basis of the necessary IP addresses.
Please find the range of our IP telephony platform below.
Always use the range as indicated above, not only the IP addresses of individual servers. IP addresses may change, or new IP addresses may be put into use.
Our telephony platform features automatic fraud detection. This will detect unauthorized use and close the trunk for international outbound traffic.
Please note, however, that this is not a substitute for properly securing an IP PBX. When using our Hosted PBX behind a router, generally no additional firewall settings are required
We are constantly working on our platform and other products. If you want to stay informed of all updates, check for new updates
Still, want to speak to a colleague?
Can't quite figure it out or get it right? Call our Customer Happiness Team at 021 012 5000 or send an email to firstname.lastname@example.org