True, RBAC is the least secure of the three access control techniques (DAC, MAC, and RBAC).
A network administrator can use RBAC to base a user's privileges and permissions on a thorough description of their roles or jobs.
There are forward proxies (also known as tunnel proxies or gateways) and reverse proxies (used to control and protect access to a server for load-balancing, authentication, decryption, or caching).
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