Download e-book for iPad: Cisco CCNA : training kit : user manual : [complete guide to by Cisco Systems

By Cisco Systems

ISBN-10: 0735708800

ISBN-13: 9780735708808

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Additional info for Cisco CCNA : training kit : user manual : [complete guide to the training kit software]

Sample text

Minimum password age in days. The methods and functionality of Windows password aging differ according to the Windows operating system release. For information on the requirements and configuration of the Windows-based password aging feature, see Enabling Password Aging for Users in Windows Databases, page 6-19, and refer to your Windows system documentation. User-Changeable Passwords With ACS, you can install a separate program so that users can change their passwords by using a web-based utility.

However, because the CHAP password is the same as the PAP password, and the PAP password is transmitted in clear text during an ASCII/PAP login, the CHAP password could be compromised. • Separate passwords for ASCII/PAP and CHAP/MS-CHAP/ARAP—For a higher level of security, users can have two separate passwords. If the ASCII/PAP password is compromised, the CHAP/ARAP password can remain secure. • External user database authentication—For authentication by an external user database, the user does not need a password stored in the ACS internal database.

While narrowing this range reduces the risk of unauthorized access, a greater risk of attack remains if you allow administration of ACS from outside a firewall. A firewall that is configured to permit HTTP traffic over the ACS administrative port range must also permit HTTP traffic through port 2002, because a web browser must address this port to initiate an administrative session. Note A broad HTTP port range could create a security risk. To prevent accidental discovery of an active administrative port by unauthorized users, keep the HTTP port range as narrow as possible.

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Cisco CCNA : training kit : user manual : [complete guide to the training kit software] by Cisco Systems

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