The requirements specify the need for two-factor authentication and encrypted AAA packets using TCP port 49, which is the default port for TACACS+. TACACS+ provides additional security features suitable for two-factor authentication, unlike LDAP. Therefore, removing the LDAP provider and creating a TACACS+ provider in user management would fulfill these requirements. References: Implementing and Operating Cisco Data Center Core Technologies (DCCOR) course materials and Cisco's official documentation on authentication solutions.