It’s a good idea to keep your VPN up-to-date, but don’t be in a rush to upgrade just because you’re looking for a new feature or two. New software is notorious for introducing as many problems as it patches. Here are the primary reasons to upgrade your VPN software:
There’s a security hole in the product you currently use.
There’s a bug that causes system problems (such as crashes, memory leaks, or networking problems).
The current version isn’t compatible with another product on your network, or a product that the remote users have, and the new version improves interoperability.
The new version has several features essential to the operation of your VPN.
Finding information on VPNs is currently like trying to stargaze in the middle of Las Vegas—there’s a lot of marketing hype out there, but practical information tends to get washed out. Nonetheless, we’ve compiled into Appendix B a short list of things to keep up with in the world of VPNs.