Why is SSL slower than IPsec VPN?
If you use an SSL VPN connection to connect to your office network, you’ll likely be familiar with lower connection speeds, poor ping times, and overall latency issues, but have you ever wondered why?
SSL VPN runs on the application layer, aka the top layer of theOSI (open systems interconnection) Model. This means it requires more overhead to negotiate connections.
The decryption process for data transferred between server and client via an SSL connection also requires more processing power which can also slow down the connection – it’s not a huge issue on modern machines, but all this extra work does add up.
Get 3x Faster VPN with IPsec
For a faster connection that is just as secure, we recommended changing from SSL VPN toIPsec VPN.
In comparison to SSL VPN, IPsec is able to offer much faster connection speeds as it runs on the network layer – level 3 of the OSI – meaning it’s much closer to the physical hardware:
Our method:
We put the theory to the test: A SonicWALL VPN gateway was configured with both IPsec and SSL VPN connections and connected from the exact same network environment.
In our tests*, the IPsec connection inVPN Trackeroffered over 3x higher download and upload speeds, plus much better latency while carrying out everyday tasks.
Even if you aren’t downloading huge amounts of data, the difference in latency means a sluggish SSL VPN experience can feel much snappier using IPsec.
Your next steps for faster VPN speeds:
- Check whether your VPN gateway offers support for IPsec VPN – most leading manufacturers do!
- Set up a VPN connection based on IPsec VPN protocol (tip: refer to ourconfiguration guidesfor your VPN gateway)
- Download VPN Trackerand use the configuration guide to quickly set up your existing VPN connection on your Mac, iPhone or iPad
P.S.If you don't have access to the connection settings, reach out to your network admin and check if your gateway already has IPsec VPN support, or if that’s an option they can enable.
