[ovirt-users] configurations on ovirt engine on centos 7

dear sir/madam, i am having problems configuring ovirt engine on centos 7, installed in a virtual box. I followed the instructions on the documentation <https://www.ovirt.org/documentation/install-guide/chap-Installing_oVirt/> here. But i could not open the ovirt engine on firefox browser on my host machine. i did it several times. can you please guid me out to configure the problem. Thank you. Deepthi