Respuesta :

Since you have configured ldap over ssl (ldaps) with default settings to secure directory service queries across subnets, the  port that must be open on the subnet firewall is D. TCP 636.

What applications employ screened subnet firewall?

Three crucial security elements are included in a screened subnet firewall scheme. Enterprise systems that require greater protection from outside assaults frequently utilize this type of arrangement. 'Triple-homed' is another name for a screened subnet firewall configuration.

Therefore, TCP port 636 is used by Lightweight Directory Access Protocol Secure (LDAPS), which employs a PKI certificate to secure LDAP sessions over a network. A centralized network directory service database, such as Microsoft Active Directory, is accessed and queried via LDAP.

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See full question below

You have configured LDAP over SSL (LDAPS) with default settings to secure directory service queries across subnets. Which port must be open on the subnet firewall?

A. TCP 389

B. TCP 22

C. TCP 25

D. TCP 636