In order to be interoperable with other data centers via IPsec, VNS3 supports a wide range of systems and standards.
- Preferred: Most models from Cisco Systems*, Juniper, Watchguard, Dell SONICWALL, Netgear, Fortinet, Barracuda Networks, Check Point*, Zyxel USA, McAfee Retail, Citrix Systems, Hewlett Packard, D-Link, WatchGuard, Palo Alto Networks, OpenSwan, pfSense, MikroTik, and Vyatta.
- Best Effort: Any IPsec device that supports: IKE1 or IKE2, AES256 or AES128 or 3DES, SHA1 or MD5, and most importantly NAT-Traversal standards.
- Known Exclusions: Checkpoint R65+ requires native IPSec connections as Checkpoint does not conform to NAT-Traversal Standards and Cisco ASA 8.4(2)-8.4(any) and Cisco ASA-X 9.2(any)-9.6.1 bugs prevent a stable connection from being maintained. (See https://support.cohesive.net/support/solutions/articles/31000156433-nat-t-compatibility-with-check-point-devices)