ufw enable

Starting Nmap 6.25 ( http://nmap.org ) at 2013-07-09 09:46 W. Europe Daylight Time
Nmap scan report for host.colocrossing.com (198.46.132.253)
Host is up (0.00020s latency).
All 1000 scanned ports on host.colocrossing.com (198.46.132.253) are filtered
Nmap done: 1 IP address (1 host up) scanned in 4.17 seconds

ufw disable

Starting Nmap 6.25 ( http://nmap.org ) at 2013-07-09 09:47 W. Europe Daylight Time
Nmap scan report for host.colocrossing.com (198.46.132.253)
Host is up (0.15s latency).
Not shown: 996 closed ports
PORT     STATE SERVICE
22/tcp   open  ssh
80/tcp   open  http
8080/tcp open  http-proxy
8443/tcp open  https-alt
Nmap done: 1 IP address (1 host up) scanned in 1.61 seconds