CCIE Security - VPN IKEv2 Lan-2-Lan or Site-2-site VPN

IKEv2 (Internet Key Exchange version 2) is a robust and modern protocol suite used for establishing secure, authenticated VPN tunnels. Specifically, IKEv2 site-to-site VPNs, also known as LAN-to-LAN VPNs, create encrypted connections between two networks, often geographically separated, allowing them to communicate securely over a public network like the internet. IKEv2 offers several advantages over its predecessor, IKEv1, including improved security through stronger cryptographic algorithms and key exchange mechanisms, enhanced performance with optimized packet processing and reduced latency, and greater flexibility in supporting various authentication methods, such as pre-shared keys, digital certificates, and Extensible Authentication Protocol (EAP). A key feature of IKEv2 is its support for Mobility and Multihoming (MOBIKE), which allows VPN connections to remain active even when the IP address of one of the endpoints changes. Furthermore,

IKEv2's simplified message exchange and support for Dead Peer Detection (DPD) contribute to faster connection establishment and more efficient handling of network outages. When configuring an IKEv2 site-to-site VPN, administrators must define security policies, including the encryption and authentication algorithms to be used, the Diffie-Hellman groups for key exchange, and the lifetime of the Security Associations (SAs) that govern the VPN connection.

Properly configured IKEv2 site-to-site VPNs provide a highly secure and reliable solution for connecting remote offices, branch locations, or cloud environments, enabling seamless and protected communication between them.

You might also be interested in these labs:

• CCIE Security - VPN GRE-Based VPN
• CCIE Security - VPN GRE VPN over IPSEC
• CCIE Security - VPN GETVPN
• CCIE Security - VPN FLEX VPN L2TPv3
• CCIE Security - VPN DMVPN Dual Hub
• CCIE Security - VPN Certificate DMVPN
• CCIE Security - VPN Certificate Based Site-2-Sites VPN
• CCIE Security - VPN ASA Site2site through ASA and router IKEV and Anyconnect VPN with multiple profiles
  

The default username and password for images used in this course is as follows, however you will hear new passwords during the course if the instructor changes the credentials: 

** For Cisco XRv you are asked for a username and password in the loading process. You can add any username and password other than admin, root, sysadmin and other reserved usernames. Go with something like Alex/cisco e.g.

Then when completely loaded, you can use cisco/cisco or admin/admin.

***For XRv9K Full image you are asked for a username and password in the loading process. You then login using the username and password that you set.