What is the primary purpose of using TCP port 636 in a network environment?
To carry standard web (HTTP) traffic over SSL/TLS
For secure file transfers such as SFTP or FTPS
To transfer multimedia messages across the network
To secure LDAP communications with SSL/TLS encryption
TCP port 636 is reserved for LDAP over SSL/TLS (LDAPS). When a client connects to this port, the LDAP session is automatically encrypted with SSL or TLS before any directory queries or credentials are transmitted, protecting the confidentiality and integrity of the data. HTTPS instead uses port 443 for secure web traffic, multimedia messaging protocols use other ports, and secure file-transfer protocols use ports such as 22 (SFTP) or 989/990 (FTPS), so those options are incorrect.
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