Advanced Network Topology with Security and Routing

This project demonstrates an advanced CCNA-level network topology designed in Cisco Packet Tracer, implementing key networking concepts such as VLANs, OSPF dynamic routing, subnetting, access lists (ACLs), remote SSH access, NAT/PAT, DHCP, and port security.

Key Features:

Subnetting & Routing: The main network 192.168.70.0/24 is divided into four subnets, with OSPF ensuring efficient routing.

Security Implementations:

Extended ACL: Prevents unauthorized devices from accessing the server1-2.

Port Security: Configured to learn and restrict MAC addresses on specific switch ports.

Network Address Translation (NAT/PAT): Allows private IPs to communicate with the internet.

DHCP Configuration: Provides dynamic IP allocation for VLANs 10, 20, and 30.

This topology is ideal for learning, testing, and real-world simulations of secure enterprise networking environments.