Linux – Unable to connect to postgresql 9.6 server from 9.4 client

Specs

Server

• Environment: FreeBSD (FreeNAS Jail)
• Postgresql version: 9.4
• Listening_address: '*'
• Listening_port: 8096
• pg_hba.conf entry: host all all 0.0.0.0/0 md5

Client

• Environment: Linux Ubuntu 16.0.4 LTS
• Postgresql version: 9.6

Issue

I am trying to host my company's database on a server which can be accessed by employees remotely. The employee environments will vary between Linux flavors and Windows. My test environment is with a Linux client. So far, I have been unable to successfully connect the client to the server.

What I've Tried

I created a postgresql password file, ".pgpass" with the pertinent information entered in the format host:port:database:username:password.
When I runpsql -h host -p port -U username database from the client, I receive a timeout error. However, when I run the same command on the server, it prompts me for my password and I am connected to my database.

Questions

What am I doing wrong here? Am I missing a step, or is there an issue with the different versions of postgresql? Does the problem lie in the difference between the Linux and BSD environments?

–EDIT–

Exact Error Message

psql: could not connect to server: Connection timed out
        Is the server running on host "host.domain.com" (###.###.###.###) and accepting
        TCP/IP connections on port [port]?

pg_hba.conf

# TYPE  DATABASE        USER            ADDRESS                 METHOD

# "local" is for Unix domain socket connections only
local   all             all                                     trust

# IPv4 local connections:
host    all             all             127.0.0.1/32            trust

# IPv6 local connections:
host    all             all             ::1/128                 trust

# IPv4 remote connections:
host    all             all             0.0.0.0/0               md5