Refer to the exhibit. A network engineer must configure the WLC to allow only DHCP and DNS packets for User1 and User2. Which configuration must be used?
A.
Enable Web Authentication for 802.1X standard in the Layer 2 Security configuration
B.
Enable Fallback Policy with MAC filtering under the Layer 3 Security configuration
C.
Enable Web policy and Authentication in the Layer 3 Security configuration.
D.
Enable Web Authentication under the AAA Server configuration on the WLAN.
None of the provided options directly address the specific task of allowing only DHCP and DNS packets. However, configuring Layer 3 security with web policy and authentication (Option C) is related to controlling access on the network at Layer 3, which could involve the use of ACLs to restrict traffic types[3]. Yet, this option does not specifically mention the use of ACLs for controlling DHCP and DNS traffic, which is the core requirement.
To specifically allow only DHCP and DNS packets, you would typically:
1. Create ACLs that permit traffic on the ports used by DHCP (ports 67 and 68) and DNS (port 53).
2. Apply these ACLs to the user profiles or WLANs that User1 and User2 are associated with, ensuring that only DHCP and DNS traffic is allowed while all other traffic types are denied.
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