The cybersecurity department needs to monitor historical IP network traffic on the WAN interface of the outside router without installing network sensors. Which of the following would be best to allow the department to complete this task?
NetFlow provides detailed statistics on IP traffic, allowing for comprehensive monitoring and analysis of network flows. It captures data on network traffic, such as the source and destination IP addresses, ports, protocols, and volume of traffic.
To monitor historical IP network traffic on the WAN interface of an outside router without installing network sensors, the best option is A. Enabling NetFlow on the interface.
A. Enabling NetFlow on the interface
NetFlow is a network protocol developed by Cisco for collecting IP traffic information. By enabling NetFlow on the WAN interface of the router, the cybersecurity department can monitor and analyze historical IP network traffic without needing additional sensors. The other options—SSH, SNMP, and 802.1Q—serve different purposes: SSH is for secure remote access, SNMP is for network management and monitoring, and 802.1Q is used for VLAN tagging.
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