IPSec over GRE Full Lab | Secure GRE Tunnel with EIGRP | Cisco Networking
In this video, we configure IPSec over a GRE Tunnel with EIGRP using Cisco routers. This lab demonstrates how to secure a GRE tunnel using IPSec encryption while running a dynamic routing protocol (EIGRP) over the tunnel.
GRE allows routing protocols and multicast traffic to pass through the tunnel, while IPSec provides confidentiality, authentication, and data integrity.
🔹 Topics Covered in This Video
• GRE Tunnel Configuration
• EIGRP over GRE
• IPSec Phase 1 (ISAKMP) Configuration
• IPSec Phase 2 (Transform Set)
• Crypto Map Configuration
• Verifying IPSec Tunnel
🔹 Lab Topology
R1 --- R2 --- R3 ---- R4
A GRE tunnel is created between R1 and R4, and the tunnel traffic is secured using IPSec encryption.
🔹 Commands Used
tunnel source / tunnel destination
router eigrp configuration
crypto isakmp policy
crypto ipsec transform-set
crypto map
This lab is useful for students preparing for:
• CCNA Security
• CCNP Security
• CCNP ENARSI
• Network Security Engineers
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