What causes authentication failures on a Cisco WSA when LDAP is used for authentication?

The correct answer is B. when the passphrase contains characters that are not 7-bit ASCI. When LDAP is configured as the authentication mechanism on a Cisco WSA, authentication failures occur when user passwords contain characters outside the 7-bit ASCII character set (i.e., characters with code points above 127, such as accented letters like é, ü, ñ, or other…

Cisco WSA Authentication

Question

Options

Awhen the passphrase contains only 5 characters
Bwhen the passphrase contains characters that are not 7-bit ASCI
Cwhen the passphrase contains one of following characters `@ # $ % ^'
Dwhen the passphrase contains 50 characters

How the community answered

(24 responses)

B
92% (22)
C
4% (1)
D
4% (1)

Explanation

When LDAP is configured as the authentication mechanism on a Cisco WSA, authentication failures occur when user passwords contain characters outside the 7-bit ASCII character set (i.e., characters with code points above 127, such as accented letters like é, ü, ñ, or other Unicode/extended ASCII characters). The WSA's LDAP authentication handling does not properly encode or transmit these non-7-bit ASCII characters, causing the credential comparison to fail at the LDAP server. Password length alone-whether 5 characters (A), 50 characters (D)-does not inherently cause failures, and common special characters like @ # $ % ^ (C) are valid 7-bit ASCII and do not trigger this issue.

Topics

#Cisco WSA#LDAP Authentication#Authentication Failures#Character Sets

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