Chapter 8 Managing Users and Identity Stores

Managing External Identity Stores

If there is a firewall between ACS and AD, certain ports need to be opened in order to allow ACS to communicate with AD. The following are the default ports to be opened:

 

 

Protocol

Port number

 

 

 

 

 

 

 

 

LDAP

389/udp

 

 

 

 

 

 

 

SMB

445/tcp

 

 

 

 

 

 

 

KDC

88/(tcp/udp)

 

 

 

 

 

 

 

Global catalog

3268/tcp

 

 

 

 

 

 

 

KPASS

464/tcp

 

 

 

 

 

 

 

NTP

123/udp

 

 

 

 

 

 

 

 

 

Note Dial-in users are not supported by AD in ACS.

 

 

 

 

 

 

 

 

 

This section contains the following topics:

 

 

Machine Authentication, page 8-43

Attribute Retrieval for Authorization, page 8-44

Group Retrieval for Authorization, page 8-44

Certificate Retrieval for EAP-TLS Authentication, page 8-44

Concurrent Connection Management, page 8-44

User and Machine Account Restrictions, page 8-44

Machine Access Restrictions, page 8-45

Dial-in Permissions, page 8-46

Callback Options for Dial-in users, page 8-46

Joining ACS to an AD Domain, page 8-48

Configuring an AD Identity Store, page 8-48

Selecting an AD Group, page 8-50

Configuring AD Attributes, page 8-51

Machine Authentication

Machine authentication provides access to network services to only these computers that are listed in Active Directory. This becomes very important for wireless networks because unauthorized users can try to access your wireless access points from outside your office building.

Machine authentication happens while starting up a computer or while logging in to a computer. Supplicants, such as Funk Odyssey perform machine authentication periodically while the supplicant is running.

If you enable machine authentication, ACS authenticates the computer before a user authentication request comes in. ACS checks the credentials provided by the computer against the Windows user database. If the credentials match, the computer is given access to the network.

 

 

User Guide for Cisco Secure Access Control System 5.3

 

 

 

 

 

 

OL-24201-01

 

 

8-43

 

 

 

 

 

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Image 195
Cisco Systems OL-24201-01 manual Machine Authentication, Protocol Port number