One of the great head scratching experiences of using the Red5 server during its evolutionary path has been how to change the deployment path from its default 'localhost' setting. Its quite simple actually - well for a Windows server - go to conf/red5.properties (you can open this in Notepad or Wordpad) and change the rtmp.host to your IP

# RTMP
rtmp.host=83.170.114.15
rtmp.port=1935

You can change all the other setting to suit your requirements there.