Unable to connect to server pgAdmin

I installed PostgreSQL on my Ubuntu virtual machine (ip: 192.168.195.95). Now, I'm trying to access the database from my physical machine Windows with pgAdmin (ip: 192.168.195.1).

I know I have to make changes in postgresql.conf and pg_hba.conf to allow the client to connect, so I had added this:

listen_addresses = '*'

in /etc/postgresql/9.4/main/postgresql.conf and

host      all              all               192.168.195.95/24            md5

in /etc/postgresql/9.4/main/pg_hba.conf and I restarted PostgreSQL.

The error information:

Unable to connect to server:

could not connect to server: Connection timed out (0x0000274C/10060)
Is the server running on host "192.168.195.95" and accepting
TCP/IP connections on port 5432?

Could you please guide me?