HP Cisco Catalyst Blade Switch 3020 Cisco Catalyst Blade Switch 3020 for HP So - Page 153
[email protected]. A Kerberos principal with a Kerberos, Definition
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Chapter 6 Configuring Switch-Based Authentication Controlling Switch Access with Kerberos This software release supports Kerberos 5, which allows organizations that are already using Kerberos 5 to use the same Kerberos authentication database on the KDC that they are already using on their other network hosts (such as UNIX servers and PCs). In this software release, Kerberos supports these network services: • Telnet • rlogin • rsh (Remote Shell Protocol) Table 6-2 lists the common Kerberos-related terms and definitions: Table 6-2 Kerberos Terms Term Authentication Authorization Credential Instance Definition A process by which a user or service identifies itself to another service. For example, a client can authenticate to a switch or a switch can authenticate to another switch. A means by which the switch identifies what privileges the user has in a network or on the switch and what actions the user can perform. A general term that refers to authentication tickets, such as TGTs1 and service credentials. Kerberos credentials verify the identity of a user or service. If a network service decides to trust the Kerberos server that issued a ticket, it can be used in place of re-entering a username and password. Credentials have a default lifespan of eight hours. An authorization level label for Kerberos principals. Most Kerberos principals are of the form user@REALM (for example, [email protected]). A Kerberos principal with a Kerberos instance has the form user/instance@REALM (for example, smith/[email protected]). The Kerberos instance can be used to specify the authorization level for the user if authentication is successful. The server of each network service might implement and enforce the authorization mappings of Kerberos instances but is not required to do so. Note The Kerberos principal and instance names must be in all lowercase characters. KDC2 Kerberized Kerberos realm Kerberos server Note The Kerberos realm name must be in all uppercase characters. Key distribution center that consists of a Kerberos server and database program that is running on a network host. A term that describes applications and services that have been modified to support the Kerberos credential infrastructure. A domain consisting of users, hosts, and network services that are registered to a Kerberos server. The Kerberos server is trusted to verify the identity of a user or network service to another user or network service. Note The Kerberos realm name must be in all uppercase characters. A daemon that is running on a network host. Users and network services register their identity with the Kerberos server. Network services query the Kerberos server to authenticate to other network services. OL-8915-01 Cisco Catalyst Blade Switch 3020 for HP Software Configuration Guide 6-33
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