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One Identity Safeguard for Privileged Passwords 7.0 LTS - Administration Guide

Introduction System requirements and versions Using API and PowerShell tools Using the virtual appliance and web management console Cloud deployment considerations Setting up Safeguard for Privileged Passwords for the first time Using the web client Home Privileged access requests Appliance Management
Appliance Backup and Retention Certificates Cluster Enable or Disable Services External Integration Real-Time Reports Safeguard Access
Asset Management
Account Automation Accounts Assets Partitions Discovery Profiles Tags Registered Connectors Custom platforms
Security Policy Management
Access Request Activity Account Groups Application to Application Cloud Assistant Asset Groups Entitlements Linked Accounts User Groups Security Policy Settings Reasons
User Management Reports Disaster recovery and clusters Administrator permissions Preparing systems for management Troubleshooting Frequently asked questions Appendix A: Safeguard ports Appendix B: SPP and SPS join guidance Appendix C: Regular Expressions About us

Appendix C: Regular Expressions

Regular expressions are used to parse large amounts of data to find matching patterns and validate a predefined pattern. For example, in Safeguard for Privileged Passwords, regular expressions are used for:

  • Account Discovery rules (Property Constraints, Name Ranges and Group Ranges). Partial matches are acceptable (unless the regular expression itself is defined to only return exact matches).
  • Ticket numbers when an external ticketing system is not used. Matches must be exact.

For details, see these Microsoft resources:

Best practices for ticketing not tied to external ticket system

These best practices are for adding a regular expression for ticketing not tied to an external ticket system. For more information, see Ticket systems.

If you use an alternation construct (“|” which is “or”), the longest matching expression is defined first to the least matching expression because Windows.Net regular expression (regex) stops after finding the first match.

For example: A{3}[0-9]{5}ZZZ|A{3}[0-9]{5} is advised instead of the reverse order. Sample entry results follow for the A{3}[0-9]{5}ZZZ|A{3}[0-9]{5} expression:

User entry: Match?  
AAA12345 Yes. Matched on the second regex  
AAA12345Z No. There is no exact match.  

Yes. Matched on the first regex.

If the expression were reversed (A{3}[0-9]{5}|A{3}[0-9]{5}ZZZ) there would be a partial match on the first expression and the entry would be returned as invalid.


You may want to wrap each expression in an alternation construct with the anchors ^ and $ when using alternation constructs. An example follows: ^A{3}[0-9]{5}ZZZ$|^A{3}[0-9]{5}$.

The ? lazy quantifier should be avoided, especially at the end of the expression. For example, if the regex is A{3}[0-9]? and the user enters AAA12345, AAA1 is returned as a matched string which is not an exact match of AAA12345.

If the greedy quantifier (*) is used against AAA12345 then the matched string will be AAA12345 and be an exact match.

About us

One Identity solutions eliminate the complexities and time-consuming processes often required to govern identities, manage privileged accounts and control access. Our solutions enhance business agility while addressing your IAM challenges with on-premises, cloud and hybrid environments.

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