There is a separate DNS server in the 172 network due to the inability of computers to use the file server's public address. NAT and PAT overload are both being used on the Branch network, but the Central 10.X.X.X network is being shared publicly. For the sake of frame diversity, the environment is not entirely realistic. All clients have full connectivity to the servers. Packet Tracer - Network Representation (Instructor Version) Instructor Note: Red font color or Gray highlights indicate text that appears in the instructor copy only. Permission is granted to print and copy this document for non-commercial distribution and exclusive use by instructors in the CCNA Security course as part of an official Cisco Networking Academy Program. This document is exclusive property of Cisco Systems, Inc. CCNA Routing and Switching: Introduction to Networks Instructor Packet Tracer Manual
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