Hathway ISP autologin page doesn't come in ubuntu 1304

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http://askubuntu.com – I am using Hathway Cable modem for internet. Every time session gets expire, hathway cable modem redirects to a auto login page to verify credentials. This page does not come in my Ubuntu 1304 (I use GNOME default desktop). Though I do not have such issue with my office laptop which is running Windows 7. Can someone help me resolve the issue? (HowTos)