You can try to spoof the user agent as IE on Windows. That at least gives me the login page, but that doesn't guarantee that the websites works with Firefox an they may use IE specific code or ActiveX controls. You can try to contact the website to inform them that you aren't using Windows and IE and if they support other platforms like Linux.

• User Agent Switcher: https://addons.mozilla.org/firefox/addon/59

• Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)

Thank you for the post. We have downloaded this add-on and installed. We are able to login, but when trying the access the links in that webpage, its giving "webform" errors. We need to test this thoroughly and let you know to seek your support if needed. =Srini