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Issue Plesk Firewall IP-Whitelist does not work correctly

Danny325

Basic Pleskian
Plesk Obsidian 18.0.21 Update Nr. 5
Today i discovered some huge security issue with Plesk Firewall.
Because we got a new static ip adress, i discovered "Allow from selected sources, deny from others" does not work.

My old static ip adress was whitelisted, but i got still full access with the new one. The only way it works correctly is to disallow.
I do also tried to insert a random ip adress, in case of cache issues on my pc.

Good to know my server was free for hackers over the full time using Plesk.
 
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