Application Layer Gateway for IPSec Protocol
Feb 07, 2019 EC2 VPC VPN Update – NAT Traversal, Additional Encryption Oct 28, 2015 Site-to-site IPSec VPN through NAT - Packet Pushers
IPSec and NAT incompatibility - SearchNetworking
Testing a config with an ER-X on the inside of an ER-L, creating an IPsec VPN to another (remote) ER-L. If I try to set this up using Port Forwarding (with auto firewall) I get only TCP and UDP options in the 1.8.5 GUI and no luck in the CLI either:[edit port-forward] admin@gateway# set rule 3 Setting Up IPsec To Use NAT Traversal on Both Sides of the WAN
By default, Windows Vista and the Windows Server 2008 operating system do not support Internet Protocol security (IPsec) network address translation (NAT) Traversal (NAT-T) security associations to servers that are located behind a NAT device. Therefore, if the virtual private network (VPN) server is behind a NAT device, a Windows Vista-based
NAT-T is designed to solve the problems inherent in using IPSec with NAT. NAT-T adds a UDP header that encapsulates the ESP header (it sits between the ESP header and the outer IP header).