TABLE 1: Types of Kerberos Transitive Trusts
Trust Type	Creation	Characteristics
Tree-root trust (between two tree-root	Implicitly, dcpromo	Transitive, two-way
domains in the same forest)
Parent-child trust (between parent-child	Implicitly, dcpromo	Transitive, two-way
domains in the same tree)
Shortcut or cross-link trust (between any	Explicitly	Transitive, one- or
domains in the same forest)		two-way
External trust (between domains in	Explicitly	Nontransitive, one-
different forests)		or two-way
Non-Windows trust (between two Kerberos	Explicitly	Nontransitive, one-
KDCs, such as a Win2K domain and an MIT		or two-way
Kerberos-based domain)