Network Security Blog

Proofs of Concept by Christian Shematsi

Explore my network security engineering PoCs, including topology diagrams, to learn best practices for securing business networks in France and Europe.

Recent Posts

Securing a LAN with Cisco ISE

This PoC demonstrates how to use Cisco Identity Services Engine (ISE) to enforce network access control on a corporate LAN. The topology includes Cisco switches, ISE, and Active Directory integration.

Cisco ISE LAN Topology Diagram

Steps: Configure ISE policies, integrate with AD, and deploy 802.1X authentication.

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VPN Failover with Palo Alto

This PoC shows how to set up a high-availability VPN solution using Palo Alto firewalls with automatic failover. The topology includes dual ISPs and IPsec tunnels.

Palo Alto VPN Failover Topology Diagram

Steps: Configure IPsec, monitor ISP links, and enable failover policies.

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