What is the recommended network MACSec policy mode for high security deployments?
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A. B. C. D. E.C.
MACSec (Media Access Control Security) is a Layer 2 security technology used to provide confidentiality and integrity to Ethernet frames transmitted over a LAN. When MACSec is enabled, it encrypts the data and ensures the integrity of the frames.
The recommended network MACSec policy mode for high-security deployments is "must-secure" (C).
The "must-secure" mode requires that all endpoints on the LAN have MACSec enabled and configured. If a device doesn't support MACSec or has it disabled, it won't be able to communicate on the protected network. This mode ensures that all communication on the LAN is secured, and any device that does not comply with the security policy will not be allowed on the network.
The other policy modes are:
A. "should-secure": This mode is less restrictive than "must-secure" as it allows non-MACSec enabled endpoints to communicate on the LAN. However, it requires that all endpoints support MACSec and that non-MACSec enabled endpoints must eventually be replaced.
B. "must-not-secure": This mode explicitly prohibits the use of MACSec on the LAN. This mode is not recommended for high-security deployments as it leaves the network vulnerable to attacks.
D. "monitor-only": This mode allows MACSec to be enabled but does not enforce it. This mode is typically used for testing or monitoring purposes.
E. "high-impact": This mode is not a valid MACSec policy mode.
In conclusion, the "must-secure" mode is recommended for high-security deployments as it ensures that all endpoints on the LAN have MACSec enabled and configured, and any device that does not comply with the security policy will not be allowed on the network.