IKEv2 VPN
The IKEv2 VPN protocol is also known as Internet Key Exchange version 2. It is an advanced VPN protocol that provides a balance between security and speed. It is an ideal protocol for mobile devices.
What is the IKEv2 VPN?
The IKEv2 is a request-and-response encryption protocol developed by Cisco and Microsoft. It establishes as well as handles the Security Association (SA) attribute, which is used to support secure communication between two network entities. It does so in an authentication suite, usually the IPSec to ensure secure traffic. It is secure, stable, and easy to setup. It is also one of the speediest VPN protocols out there.
How Does IKEv2 Work?
The IKEv2 protocol lets the VPN devices at the two ends of the tunnel encrypt as well as decrypt the packets using either pre-shared keys, Extensible Authentication Protocols (EAP) or digital signatures. The encryption and decryption use the Asymmetric Authentication which means either ends of the tunnel do not need to mutually agree upon a single authentication method. IKEv2 uses four different types of message exchanges (IKE_SA_INIT, IKE_AUTH, CREATE_CHILD_SA, and INFORMATIONAL) to establish IKE SA. The SA deals with different types of attributes including traffic encryption key and cryptographic algorithm, to name a few.
IKEv1 vs IKEv2
Here are some key differences between IKEv1 and IKEv2 protocols:
- The first version of Internet Key Exchange (IKEv1) was introduced in 1998. The second version (IKEv2) came out in 2005 as an enhancement of the former.
- IKEv2 consumes less bandwidth in comparison to IKEv1.
- Unlike IKEv1, remote access is supported in IKEv2 by default as it uses EAP.
- IKEv2 has built-in Network Address Translation- Traversal (NAT-T), whereas IKEv2 does not.
- IKEv1 does not support MOBIKE. which is appropriately spelled and stands for the Mobility and Multihoming Protocol. However, it implements the technology, which allows it to be used by many users.
- IKEv2 provides more security than IKEv1 because it uses separate keys for each side.
- IKEv1 does not offer support for as many algorithms as IKEv2.
- IKEv2 requires Asymmetric Authentication. This means that it uses two secret keys for increasing your security. IKEv1, on the other hand, uses Symmetric Authentication. A Symmetric Authentication requires only one secret key to cipher and decipher messages.
Key Features of IKEv2 VPN
Low Latency
IKEv2 uses UDP port 500 which is ideal for network applications. As such, it supports those apps where user-perceived latency is important.
Fast Speed
IKEv2 offers faster speeds than L2TP and PPTP. It has newer architecture and a more effective response/request message exchange scheme.
High-Security
Certificate-based authentication ensures no actions are performed until the requester’s identity is determined.
Constant Connection
MOBIKE support allows you to keep the VPN connection active while you switch between Wi-Fi and cellular data.
Perfect Forward Secrecy
The PFS feature in IKEv2 assures complete secrecy and integrity of your data. It does so by ensuring the non-duplication of keys and session expire.
Control Network Traffic
With MOBIKE, it is also possible for a multi-homed host to move traffic to another network interface if the one currently in use stops working.
IKEv2 VPN Protocol Comparison
IKEv2 vs OpenVPN vs SSTP vs L2TP vs PPTP
The following is an in-depth comparison of IKEv2 against other common VPN protocols.
| IKEv2 | OpenVPN | SSTP | L2TP | PPTP | |
|---|---|---|---|---|---|
| Encryption | 256-bit | 256-bit | 256-bit | 256-bit | 128-bit |
| Security | Latest VPN protocol which implements IPSec and is highly secure | OpenVPN can be considered extremely secure when used in conjunction with robust cipher and ephemeral keys | Can be considered as secure as OpenVPN when used in conjunction with robust cipher and ephemeral keys | IPSec over L2TP, when properly implemented, has no major known vulnerabilities | PPTP implementation has several known security vulnerabilities |
| Stability | Highly stable and consistent connection once established | Stable Connection | Stable, but more so on Windows | Stable Connection | Unstable and may disconnect frequently |
| Speed | Faster than other VPN protocols due to MOBIIKE support, which makes it stable and resilient | Great speed across long distances and on connections with high latency | Faster than PPTP and L2TP | L2TL/IPSec is still fast, despite tunneling overhead, due to high encryption/decryption efficiency. | Fastest VPN protocol because of basic encryption |
| Supported OS | Windows OS iOS Android (Manual) Mac OS X (Manual) BlackBerry (Manual) | Windows OS iOS (Manual) Android Mac OS X (Manual) And More... | Windows OS iOS (Not Supported) Android (Not Supported) MAC OS X And More... | Windows OS iOS (Manual) Android (Manual) Mac OS X (Manual) And More... | All Platforms (Manual) |
| Conclusion | Fast speed, strong security, the only VPN protocol supported by Blackberry | Good speed, strong security, native support for most OS. | Safer and faster than PPTP and L2TP, ideal for Windows OS, can easily bypass firewalls | Easy-to-setup, stable, and secure | Highly recommended for speed, but isn’t the best option for security |
PureVPN Offers Support for all major VPN protocols and platforms.
Pros and Cons of IKEv2
Advantages
- Highly secure protocol
- Stable and reliable connection
- Faster than most other protocols
- MOBIKE support
- Ideal for mobile devices
Disadvantages
- Supports a limited number of platforms
- Can be blocked by some firewalls
- Since it’s based on IPSec, it suffers from the same drawbacks (tampering by the NSA)
How to Setup IKEv2
- Subscribe to PureVPN
- Download PureVPN iOS app for your device
- Launch the app and select your desired mode
- Enjoy secure and speedy IKEv2 VPN connection!
For manual configuration on other preferred devices, Check out this guide.
- Subscribe to PureVPN
- Download PureVPN Windows app for your device
- Launch the app and go to Settings
- Select the IKEv2 Protocol
- Enjoy secure and speedy IKEv2 VPN connection!
For manual configuration on other preferred devices, Check out this guide.
How to Select the Best VPN Protocol
Automatic Selection
As PureVPN offers support for a variety of VPN protocols, choosing the best one can prove to be a challenging task. To make things easier, we automatically select the VPN protocol most suitable for your circumstances. This feature is on by default, so connect and rest assured that you are protected by the most advanced technology.
Manual Selection
However, you can also configure your VPN connection to use a different protocol. You should take a look at our comparison chart of all VPN protocols for a clear understanding of what each has to offer. If you are still unsure about which one to use, it is recommended that you try these VPN protocols in the following order:
Frequently Asked Questions
Is IKEv2 better than OpenVPN?
Whether IKEv2 is better than OpenVPN protocol depends on numerous factors. The most important factors are speed and security. Let me explain!Speed: Due to MOBIKE support, IKEv2 is faster and more stable than the other VPN protocols. But OpenVPN has excessive speed with long range and high latency.Security:IKEv2 is the newest VPN protocol which applies IPSec and uses 256-bit encryption. This is why, it is more secure. OpenVPN can be deliberated to become highly secure when used in combination with robust encryption and cryptographic keys.
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