Redis, Python send message over the network

I have the following code written in Python using the Redis PubSub messaging system.

Publication:

 import redis
 def func1(m):

 queue = redis.StrictRedis(host='localhost', port=6379, db=0)
 channel = queue.pubsub()
 queue.publish("message", m)

 if __name__=='__main__':    
 while True:

     m = raw_input('Enter message: ')
     func1(m)

      

        
        
        
      

    

Subscriber side:

import redis
r = redis.StrictRedis(host='localhost', port=6379, db=0)
p = r.pubsub()
p.subscribe('message')

while True:
    message = p.get_message()
    if message:
        print  message['data']

      

        
        
        
      

    

I want to be able to send messages from one computer to another that are on the same network. I tried to run the publisher and subscriber code on two separate machines, changing host = 'localhost' to host = 'target machine's IP address' But when I ran it, the subscriber program just sat around and didn't receive any messages.

How do you run Redis over a network, not just a local machine? Do I need to list the target computer's IP address on both the pub and sub-parties? I cannot find any specific example on the internet, everything I believe just assumes that you are running it on localhost.