There are several ways to search for users in an LDAP server from different tools, including:
1. Command-line tools: Tools such as ldapsearch on Linux and dsquery on Windows can be used to search for users in an LDAP server.
1. LDAP browsers: LDAP browsers like Apache Directory Studio, JXplorer, and LDAP Admin can be used to search for users in an LDAP server.
1. Programming languages: Almost all programming languages provide LDAP libraries that can be used to search for users in an LDAP server. Examples of such libraries are python-ldap, Net::LDAP (Perl), and System.DirectoryServices (C#).
1. Identity and Access Management (IAM) solutions: IAM solutions such as Oracle Identity Manager, IBM Security Identity Manager, and Microsoft Identity Manager allow administrators to search for users in LDAP servers.
When searching for users in an LDAP server, you will need to specify the search filter and base DN. The search filter is used to define the criteria for the search, while the base DN defines the starting point for the search in the LDAP directory tree. The search filter is written using the LDAP filter syntax, which allows you to specify a wide variety of search criteria such as user name, email address, group membership, and more.
