Remote Authentication

More companies are allowing users to work from home, which extends a company’s network and introduces new security concerns.

Your company has decided to allow employees to work from home two days a week. Your CISO has requested a high-level comparison between RADIUS, TACACS and VPN. How does each of these services leverage Kerberos and the AAA framework?  Make a recommendation and justify your answer based on your findings. Make sure to outline any limitations associated with each service