Cisco Updated 300-710 Exam Questions and Answers by claudia

To filter traffic between multiple subnets, the engineer must implement the firewall in routed mode. In routed mode, the firewall operates as a Layer 3 device, capable of routing traffic between different IP subnets. This mode is appropriate for filtering traffic between LAN, DMZ, and WAN subnets.

Steps to configure routed mode:

Access the firewall ' s management interface.

Configure interfaces for each subnet (LAN, DMZ, WAN) with appropriate IP addresses and network masks.

Define security zones and apply access control policies to filter traffic as required.

This ensures that the firewall can inspect and route traffic between the different subnets, providing the necessary security and control.

Based on the Attacks Risk Report, DNS is associated with a high number of impact events (16). DNS traffic is critical for network operations but can also be exploited for malicious activities such as DNS tunneling, DDoS attacks, and data exfiltration. To improve security, the security engineer should focus on inspecting DNS traffic. This involves deploying DNS security solutions and monitoring DNS traffic for anomalies to detect and mitigate potential threats.

Steps:

Implement DNS security tools such as DNS filtering, DNSSEC, and DNS anomaly detection.

Configure the firewall to inspect DNS traffic for malicious activities.

Regularly analyze DNS logs to identify and respond to threats.

This action addresses a significant risk identified in the report and helps to mitigate potential attacks exploiting DNS.