Introduction. 3CX allows you to whitelist and blacklist IP addresses. All traffic from whitelisted IP addresses will be granted without being checked by the anti-hacking features. All traffic from blacklisted IP addresses will be stopped immediately. This guide explains how to configure new whitelist and blacklist entries in 3CX. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.