If you have installed the exoplatform without superuser privileges the port in wich apache is listening is 8080 instead of 80. If you do
sudo netstat -plnt you should see something like this:
tcp6 0 0 :::8080 :::* LISTEN 4412/httpd.bin
Next, if you want to access from your browser to the exoplatform server you should open the port 8080 to allow external access. Once you do that, you should be able to access to:
I hope this information is useful for you. If you have any other question, please do not hesitate to let us know.
Thank you and best regards,