I was browsing through some other ticket with similar problem and found that the following ports are open and listening.
[root@naveencentos65 etc]# netstat -apn | grep 443
tcp 0 0 192.168.64.153:443 0.0.0.0:* LISTEN 10296/httpd
tcp 0 0 :::8443 :::* LISTEN 57003/java
unix 2 [ ACC ] STREAM LISTENING 9992883 44376/gnome-keyring /tmp/keyring-YTGTDs/socket
unix 3 [ ] STREAM CONNECTED 9992966 44381/pam
unix 3 [ ] STREAM CONNECTED 9992962 44381/pam
unix 3 [ ] STREAM CONNECTED 34430 21663/gnome-termina /tmp/orbit-nkottapalli/linc-549f-0-2ba665442aff8
unix 3 [ ] STREAM CONNECTED 15981 4431/rtkit-daemon
unix 2 [ ] DGRAM 15980 4431/rtkit-daemon
[root@naveencentos65 etc]# netstat -apn | grep "\<80\>"
tcp 0 0 192.168.64.153:80 0.0.0.0:* LISTEN 10296/httpd
tcp 0 0 192.168.64.150:58795 173.194.122.6:80 ESTABLISHED 10104/firefox
tcp 1 0 192.168.64.154:58483 125.252.226.104:80 CLOSE_WAIT 20938/clock-applet