Hi,
I found Avast free antivirus not only scan the ports of my private network server, but it try to login, too, via ssh brute force attack (ten times x second). I found this behavior unacceptable, expecially because you can move with your laptop on others private network of work, school etc and is not so polite you are attemp to go inside other servers.
Moreover, I left a router with a monitor account w/o password, and it found it and enter but no related messages were reported to me.
I was running Win 7, Avast free V 22.7.6025