If you can change this line:
host all all 192.168.0.1/32 md5
With this:
host all all all md5
You can see if this solves the problem.
But another consideration is your postgresql port(5432) is very open to password attacks with hackers (maybe they can brute force the password). You can change your postgresql port 5432 to ‘33333’ or another value, so they can’t know this configuration.