Fortinet is just an IPSEC VPN server - you don't specifically need their client to connect to it. The IPSEC HOWTO details a list of various options you have for setting up a Linux VPN client. There are also a few commercial linux IPSec clients such as Shrewsoft. AWS Site-to-Site VPN with IPSec VPN (Strongwan) and BGP Jul 18, 2019 PittNet VPN (Pulse Secure): Connect with IPSec (Linux This service supports specialized VPN needs such as clients running a Linux/Unix operating system or high-performance applications that require more capacity than the PittNet VPN service can support. The IPSec service was created to fill specific remote access needs that may have been addressed by recent changes to the PittNet VPN service. What is IPSec VPN - SSL Vs IPSec VPN - June 2020

How to Setup IPsec VPN on pfSense 2.3? | lifeoverlinux

strongSwan the OpenSource IPsec-based VPN Solution. runs on Linux 2.6, 3.x and 4.x kernels, Android, FreeBSD, OS X, iOS and Windows; implements both the IKEv1 and IKEv2 key exchange protocolsFully tested support of IPv6 IPsec tunnel and transport connections; Dynamical IP address and interface update with IKEv2 MOBIKE ()Automatic insertion and deletion of IPsec-policy-based firewall rules

This service supports specialized VPN needs such as clients running a Linux/Unix operating system or high-performance applications that require more capacity than the PittNet VPN service can support. The IPSec service was created to fill specific remote access needs that may have been addressed by recent changes to the PittNet VPN service. What is IPSec VPN - SSL Vs IPSec VPN - June 2020 VPN – MX Linux