Which mode of FTP is considered more secure?

Which mode of FTP is considered more secure?

• A. Active mode
• B. Passive mode
• C. Both modes equally
• D. Neither mode is secure

Answer: (B)

Passive mode is considered more secure than active mode primarily due to how the connection is established between the client and the server. In active mode, the client opens a port and listens for connections from the server, which can create potential security vulnerabilities. Firewalls and NAT devices are often more likely to block incoming connections, which can lead to issues in data transfer. In contrast, passive mode resolves some of these security concerns by having the server open a port and wait for the client to connect to it. This approach is more firewall-friendly, making it less likely that the connection will be improperly terminated or blocked. Additionally, because passive mode generally prevents the server from initiating connections to the client, it reduces the exposure of the client system to unwanted incoming connections, reinforcing its security posture. Considering these aspects, passive mode is recognized for being the more secure option when utilizing FTP, particularly in environments where firewalls and network security are considerations.

Passive mode is considered more secure than active mode primarily due to how the connection is established between the client and the server. In active mode, the client opens a port and listens for connections from the server, which can create potential security vulnerabilities. Firewalls and NAT devices are often more likely to block incoming connections, which can lead to issues in data transfer.

In contrast, passive mode resolves some of these security concerns by having the server open a port and wait for the client to connect to it. This approach is more firewall-friendly, making it less likely that the connection will be improperly terminated or blocked. Additionally, because passive mode generally prevents the server from initiating connections to the client, it reduces the exposure of the client system to unwanted incoming connections, reinforcing its security posture.

Considering these aspects, passive mode is recognized for being the more secure option when utilizing FTP, particularly in environments where firewalls and network security are considerations.