Installation of cPanel on RedHat Enterprise

Hi everyone, Not sure if this is the right place to post this, please relocate if necessary. I am trying to perform an installation of cPanel on a Red Hat Enterprise Linux Server release 6.6 (Santiago). The server is behind a proxy, http_proxy, https_proxy and ftp_proxy has been set. Machine is registered to RHEL Subscription. The installation fails with the following error.
2015-01-16 11:20:02 574 (DEBUG): HTTPUPDATE is set to httpupdate.cpanel.net 2015-01-16 11:20:02 595 (DEBUG): Retrieving updatenow.static from http://httpupdate.cpane 2015-01-16 11:20:02 720 (DEBUG): Retrieving http://httpupdate.cpanel.net/cpanelsync/insta 2015-01-16 11:20:02 597 (DEBUG): - ssystem [BEGIN]: /usr/bin/bunzip2 updatenow.static.bz2 2015-01-16 11:20:02 597 (DEBUG): - ssystem [END] 2015-01-16 11:20:02 602 ( INFO): Closing install log and passing output control to updateno CDB_File could not be loaded. You may see pages in English rather than in your desired local This issue is temporary and may be fixed after upcp runs at ./updatenow.static line 12443. YAML::Syck is not available (attempting to ignore). at ./updatenow.static line 13570. [20150116.112003] Running version '11.46.0.12' of updatenow. [20150116.112003] --force passed on command line. Upgrade will disregard update config set ...failed: Unable to connect: No route to host at ./updatenow.static line 27773. ......failed: Unable to connect: No route to host at ./updatenow.static line 27773. ......failed: Unable to connect: No route to host at ./updatenow.static line 27773. ......failed: Unable to connect: No route to host at ./updatenow.static line 27773. ......failed: Unable to connect: No route to host at ./updatenow.static line 27773. ......failed: Unable to connect: No route to host at ./updatenow.static line 27773. ......failed: Unable to connect: No route to host at ./updatenow.static line 27773.
Can someone please help me out on this?