Duo Security is a good double factor authentication but RSA securID is thedouble factor authentication system the most used in compagnies and really more secure. Some compagny have hight level of confendentiality, this feature may be available for internal users who access to their files from Internet. RSA provide an agent for apache.
Johan Allard September 15, 2014 00:29 LiquidFiles doesn't use Apache, it uses Nginx as its web server. If you want to use anything other than Duo, you can use any other system (including RSA) that supports the open web authentication standard SAML 2.
