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In this article, you will learn how to whitelist specific IP addresses that are permitted to access your system. Such settings will increase your network protection, minimize security risks, and prevent unauthorized access to your PBX.
To set the access control list:
The PBX Instance Details pane with several tabs will open on the right. Here you can insert IP addresses to web and SIP access lists.
Web ACL restricts access to your PBX, PBX Stats, and Dialer websites.
To set the web access list:
In the examples below, we use random IP addresses from a public database.
SIP ACL whitelists specific IP addresses for SIP registration and calls.
To set the SIP access list:
You can effectively whitelist IP addresses for static IPs only. It is often a case that your Internet Service Provider gives you a dynamic IP address. It keeps changing over and over again so you can get rejected. In such a case, the Dynamic Domain Name Service (DDNS) would be a solution for you. You can register a hostname with one of the free DDNS providers (for example, no-ip). Once registered, you obtain a fixed name server address.
You can set up ACL for a name server address in the same way. Type the address (a fully qualified domain name) in the field under IP ACL and click on the plus icon. After you click SAVE CHANGES, the address appears in the access list.
Adding a name server address works for both the web and SIP ACL.
Geo ACL whitelists any IP from countries you can select for both web and SIP access. When accessing your resources, the users will still need to provide their credentials.
We recommend country whitelisting as an additional measure to the web or SIP ACL.
To whitelist all IPs for countries: