Cisco Certified Internetwork Expert Security
CCIE Security Dashboard Cisco Certified Internetwork Expert Security - Structured Learning Portal Section 01 - Virtual Private Networks (VPNs) ▼ 1) IPSec LAN - To LAN VPN using Crypto Maps + IPSec LAN-to-LAN VPN using Crypto Maps provides secure encrypted communication between two remote networks over the Internet. It includes ISAKMP - Internet Security Association and Key Management Protoco - Phase 1 for establishing a secure management tunnel, IPSec Phase 2 for encrypting data traffic, transform sets for defining encryption methods, and ACL-based interesting traffic selection to identify which packets should pass through the VPN tunnel. 2) GRE Based VPN - Generic Routing Encapsulation + GRE-based VPN creates a virtual point-to-point tunnel between remote routers, allowing routing protocols, multicast, and broadcast traffic to pass through the tunnel. GRE itself does not provide encryption, so it is commonly combined with IPSec for secure communi...