What option should be used with the openvpn command to prevent ephemeral keys from being written to swap space?

What option should be used with the openvpn command to prevent ephemeral keys from being written to swap space?

• A. --mlock
• B. --no-swap
• C. --root-swap
• D. --keys-no-swap

Answer: (A)

Using the --mlock option with the openvpn command is appropriate for preventing ephemeral keys from being written to swap space. This option utilizes memory locking to keep sensitive data in RAM and out of the swap space, thereby reducing the risk of potential exposure if the system runs low on memory. When memory pages are locked, they cannot be swapped out, which is critical for protecting the confidentiality of cryptographic keys and other sensitive information during an OpenVPN session. The importance of this is particularly relevant in a security context, as swap space can be more vulnerable to unauthorized access or probing by malicious actors. By ensuring that keys are kept in memory, openvpn enhances the overall security posture of the VPN setup.

Using the --mlock option with the openvpn command is appropriate for preventing ephemeral keys from being written to swap space. This option utilizes memory locking to keep sensitive data in RAM and out of the swap space, thereby reducing the risk of potential exposure if the system runs low on memory. When memory pages are locked, they cannot be swapped out, which is critical for protecting the confidentiality of cryptographic keys and other sensitive information during an OpenVPN session.

The importance of this is particularly relevant in a security context, as swap space can be more vulnerable to unauthorized access or probing by malicious actors. By ensuring that keys are kept in memory, openvpn enhances the overall security posture of the VPN setup.