IP has been blacklisted

[Hitesh Patel]

i am getting alot of

3CX Phone System Email Notification - ID 12290 - The IP has been blacklisted for 86400 sec (Expires at: Too many failed authentications!). Reason: %4 on 3CXPhoneSystem!


how to stop this from happening its really getting crazy now

 

[leejor]

Depends on what you are trying to stop. Is the notification for a valid IP/device, that should be registering without an issue, or, is it for an IP that is attempting to "hack" your system. If it is the former, you can white-list the IP, or range, although there may be some issue, with a device, that requires "investigation". If it is the later, then you can increase the time, that the IP is blocked on each occurrence, or permanently block it for a longer time (years), if the specific IP keeps "coming back"

see... https://www.3cx.com/community/threads/anti-hacking-firewall-recommendation.50961/#post-208576