For allowing SSH, FTP, and LDAP traffic on a host-based firewall, which ports must be configured? (Choose three)

For allowing SSH, FTP, and LDAP traffic on a host-based firewall, which ports must be configured? (Choose three)

• A. 21
• B. 22
• C. 25
• D. 389

Answer: (A)

To allow SSH, FTP, and LDAP traffic through a host-based firewall, it's essential to configure the corresponding ports that these services utilize. The port for FTP, which stands for File Transfer Protocol, is 21. This port facilitates the communication for file transfers between clients and servers, making it a vital component for allowing FTP traffic through the firewall. SSH, or Secure Shell, uses port 22. This protocol provides a secure channel over an unsecured network, allowing for secure command line access and secure file transfers. Ensuring that port 22 is open is crucial for enabling SSH traffic. LDAP, which stands for Lightweight Directory Access Protocol, operates over port 389. This port is necessary for directory services. A host-based firewall needs to permit traffic on this port to enable LDAP queries and access to directory services. Collectively, configuring the firewall with these ports (21 for FTP, 22 for SSH, and 389 for LDAP) ensures that the respective services can operate correctly and securely on the server.

To allow SSH, FTP, and LDAP traffic through a host-based firewall, it's essential to configure the corresponding ports that these services utilize.

The port for FTP, which stands for File Transfer Protocol, is 21. This port facilitates the communication for file transfers between clients and servers, making it a vital component for allowing FTP traffic through the firewall.

SSH, or Secure Shell, uses port 22. This protocol provides a secure channel over an unsecured network, allowing for secure command line access and secure file transfers. Ensuring that port 22 is open is crucial for enabling SSH traffic.

LDAP, which stands for Lightweight Directory Access Protocol, operates over port 389. This port is necessary for directory services. A host-based firewall needs to permit traffic on this port to enable LDAP queries and access to directory services.

Collectively, configuring the firewall with these ports (21 for FTP, 22 for SSH, and 389 for LDAP) ensures that the respective services can operate correctly and securely on the server.