Data Domain: External Domain or username with hyphens cannot log in over SSH or UI

Summary: In DDOS versions 7.13.1.10 and 8.2.x, external usernames or domain names containing hyphens fail to authenticate using SSH or the UI. This issue affects users authenticated through Active Directory (AD), Lightweight Directory Access Protocol (LDAP), or Network Information System (NIS). ...

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Symptoms

  • External users (AD/LDAP/NIS) with hyphens in their domain or username cannot log in using SSH or UI.
  • Authentication fails immediately after password submission.
  • The system resets the connection without granting access.

Affected Versions:

  • DDOS-7.13.1.10
  • DDOS-8.2.x

Example Log Entries (messages.engineering):

  • smu_user_is_user_exists_username: User "corp-eng\test" not found in /etc/passwd  
smu_user_is_external_username_valid: returning FALSE for user: corp-eng\test  
smu_session_is_session_username_valid: Session username is not valid  
Invalid user "corp-eng\test"  
Disconnected from user test.local\\test
Note: The domain name includes DNS domain name (a-b.c.com) and NetBIOS domain name (corp-eng).

Cause

The DDOS username (and domain name) verification logic did not correctly validate external usernames containing hyphens, resulting in failed authentication attempts.

Resolution

This issue is resolved in the following DDOS versions:

  • DDOS-7.13.1.20
  • DDOS-8.3.0.0

Upgrade to one of these versions to restore login functionality for external usernames with hyphens.

Workaround:
If upgrading is not feasible, contact Data Domain Support for a registry key workaround to bypass the validation issue.

  • Reference this KB article (#000261126) to expedite resolution

Affected Products

Data Domain
Article Properties
Article Number: 000261126
Article Type: Solution
Last Modified: 10 Nov 2025
Version:  6
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