Open port 443 vCenter server

Thank you so much for looking at my. I am trying to open up ports 443 and 80 for access to the vCenter server by a disaster recovering software. The disaster recovery site is located in the different state and we have vpn tunnel between two sites with ports 443 & 80 open. The disaster recovery site is an esx host 5.0.

I ran nmap ping to check on ports 443 & 80 to esx host:

Port 443

Starting Nmap 6.40 ( http://nmap.org ) at 2013-10-10 11:26 Central
Daylight Time Nmap scan report for xxx.xxx.xx.xx Host is up (0.0079s
latency). PORT STATE SERVICE
443/tcp open https

Nmap done: 1 IP address (1 host up) scanned in 24.41 seconds

Port 80

Starting Nmap 6.40 ( http://nmap.org ) at 2013-10-10 11:27 Central
Daylight Time Nmap scan report for xxx.xxx.xx.xx Host is up (0.0098s
latency). PORT STATE SERVICE
80/tcp open http

Nmap done: 1 IP address (1 host up) scanned in 13.52 seconds

Now, when I do the same thing for vCenter, I get this:

Port 443

Starting Nmap 6.40 ( http://nmap.org ) at 2013-10-10 11:12 Central
Daylight Time Nmap scan report for xxx.xxx.xx.xx Host is up (0.0078s
latency). PORT STATE SERVICE 443/tcp closed https

Nmap done: 1 IP address (1 host up) scanned in 7.11 seconds

Port 80

Starting Nmap 6.40 ( http://nmap.org ) at 2013-10-10 11:13 Central
Daylight Time Nmap scan report for xxx.xxx.xx.xx Host is up (0.0079s
latency). PORT STATE SERVICE 80/tcp closed http

Nmap done: 1 IP address (1 host up) scanned in 6.38 seconds

I also attempted to run esxcfg-firewall –openPort ,tcp|udp,in|out, to open up the ports, but I don't believe this command applies to esx 5.0.

I know I might be missing some important info, so please, please, ask follow ups.

Thank you!!!