IPSec protocol guide and tutorial - VPN implementation

Hi all, i have a site-to-site VPN tunnel configured only come up when traffic generated from remote peer. is there any way to keep the tunnel always active once after the tunnel is established. my requirement is to monitor the VPN for availability, so need to ping one of the Natd ip on remote end, APNIC eLearning: IPSec Basics IPsec Modes • Tunnel Mode – Entire IP packet is encrypted and becomes the data component of a new (and larger) IP packet. – Frequently used in an IPsec site-to-site VPN • Transport Mode – IPsec header is inserted into the IP packet – No new packet is created Site to Site VPN Explained – Simplified Configuration Process

Nov 06, 2014

IPsec VPN Overview - TechLibrary - Juniper Networks

Appendix B IPSec, VPN, and Firewall Concepts Overview: VPN Concepts B-4 Using Monitoring Center for Performance 2.0.1 78-16217-02 Overview: VPN Concepts A virtual private network (VPN) is a framework that consists of multiple remote peers transmitting private …

What is IPSEC? In the world of VPNs, there are typically two types that an organization can choose from…IPSEC or OpenSSL. While many people have migrated to OpenSSL mode because of its new relative ease of deployment, there are still companies that deploy IPSEC-based VPNs because of the additional layers of security they provide that are not available in OpenSSL-based VPNs.