You could setup HTTP on port 80 and RTMPT on port 80 as well.
We need to modify is the server properties file located in the conf directory: red5_path/conf/red5.properties

  • Locate the http.port key and change it to 80 instead of 5080
  • Do not change the rtmpt.port entry, it should be 8088
  • Save and close the file

Reference: gregoire.org