Unwanted traffic to the site

Hello,

We are facing unwanted traffic to our site due to this our web site getting down frequently. We have tried to block these traffic using firewall rules but they are changing the file name frequently.

Example:

/something.sh
/something.php
/something.sql
/something.txt

Is there any permanent fix for this issue?

Thank You.

There most likely is, but you’d need to provide way more information.

Post something like ten sample requests from your logs (including client address, agents, etc.).