CREST Practitioner Security Analyst (CPSA) Practice 2026 - Free CPSA Practice Questions and Study Guide

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What port is commonly used for LDAP?

389

The commonly used port for LDAP (Lightweight Directory Access Protocol) is 389. This protocol is an application protocol used to access and maintain distributed directory information services over an internet protocol network. Port 389 is designated for standard unencrypted LDAP communications.

In contrast, other ports listed serve different purposes. Port 443 is typically used for HTTPS, which secures HTTP traffic; port 21 is associated with FTP, used for file transfers; and port 80 is the default port for HTTP, used for unencrypted web communication. Understanding the specific port associated with LDAP helps in configuring and securing directory services effectively, ensuring proper network communication and data management.

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443

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80

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