We received thread from client side. We did a lot of inspection and found that these threads are coming using the client's CCTV credentials. We found that the threads stop when the client changes the CCTV open port. So please suggest me a securities of MikroTik Router for that.
Imagine that you don't know anything about your client and the setup and/or devices involved.
Now re-read your post.
Can you actually understand it nonetheless?
If no, then it means that your post is missing meaningful info, and as such cannot be replied to and you need to provide a lot more info.
Right now you sound like being in the "I'm ill, doctor. Help!" situation:
Saw a similar post from the same author (other subject) and decided to reject it based on the same sentiments.
This one needs to be cleared first.