What type of trust must be established to connect an Active Directory environment with an existing Kerberos K5 domain?

A realm trust is specifically designed to enable interoperability between Active Directory (AD) environments and other non-Windows Kerberos environments, such as a Kerberos K5 domain. This type of trust allows Kerberos authentication between the two systems, facilitating user and resource access across different domains.

Establishing a realm trust allows the two systems to share authentication tickets, enabling users in the Active Directory to access resources in the K5 domain and vice versa. In this scenario, the trust enables a seamless integration where the security principals from both environments can authenticate each other while maintaining their own unique security policies and regulations.

The other types of trusts mentioned do not serve this specific purpose. Shortcut trusts, for instance, are used in environments with multiple domains within the same forest to streamline authentication and resource access, without the need to traverse the entire directory structure; they do not involve non-Windows domains. Forest trusts connect entire Active Directory forests to allow resource sharing and authentication between all domains in the respective forests. One-way trusts allow one domain to authenticate user access to another domain but do not facilitate bidirectional Kerberos authentication with dissimilar systems like the K5 domain.

Thus, establishing a realm trust is essential for connecting an Active Directory environment with a Kerberos K