PPTP vs L2TP vs OpenVPN vs SSTP

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PPTP vs L2TP vs OpenVPN vs SSTP

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Each of these protocols offers different features and levels of security. The world of VPNs sure is full of acronyms and words that may make your eyes glaze over at first. Point-to-Point tunnelling protocol was created through a consortium that was used by Microsoft in an attempt to create a VPN that could be used over a dial-up network. While it is only a VPN protocol, it does rely on a number of different methods used for authentication in an attempt to offer security. It is a popular choice for businesses as well as VPN providers and for every VPN capable platform or device, it comes as standard. Set up is efficient and simple and there is no requirement for extra software to be installed. It now uses bit encryption keys but since it was bundled with Windows 95 in a number of security weaknesses were found with the most serious being the chances of unencapsulated MS-CHAP V2 Authentication. Through this weakness, PPTP was exploited within a couple of days but the weakness has been identified and fixed. However, it is a concern that the NSA has gone so far as to decrypt large amounts of data that is stored, this is data that was encrypted at a time when PPTP was considered secure by security experts. The advantages of using PPTP is that the client is built into a wide range of platforms but it is also very simple to set up and it works efficiently. There are disadvantages and this is the lack of security and the fact that is has been exploited by the NSA. Layer 2 Tunnel Protocol is a VPN protocol which when used on its own does not offer any form of encryption or protection for traffic that flows through it. Therefore, it is commonly paired up with IPsec which is an encryptions suite that offers enhanced security as well as privacy. Just in the same way as PPTP, the setup can be completed quickly and easily. This is a port that is commonly blocked by NAT firewalls and will mean that additional and advanced configuration will have to be implemented should it be used behind a firewall. There are no known major weaknesses with IPsec and if it is applied correctly it will offer a certain level of security. This is seen to be very secure when it comes to advantages and once again it is simple to set up. However, there is a possibility that it could be compromised by the NSA and this could also contribute to its weakness and firewalls that have strict restrictions can prove difficult. It is very easy to configure and alter and even though it works more efficiently on a UDP port it is possible to configure it so that it can run on any port and that include TCP port It is considered to be secure but there are some known security flaws. The US government have adopted it in an attempt to protect their secure data, therefore, it is seen as the main player when it comes encryption. It has the ability to deal with large files as a result of it using a bit block size instead of the bit block size used by Blowfish. The encryption used does determine the speed of OpenVPN but IPsec is faster than OpenVPN as a result of encryption and decryption taking place in the kernel as well as it allowing multi-threading. No platform openly supports OpenVPN but it is supported by most types of third party software and this means that it is now the default VPN connection type. The advantages of OpenVPN are that it is easily customisable and extremely secure. As it is Open source it can be checked for any weaknesses or interference. In order to work, it does require third party software and it can be difficult to setup. While it works well on desktop machines it is still not up to speed for use on mobile devices although this is changing. Microsoft has been linked with the NSA and co-operating with them while the possibility of backdoors being built into Windows operating systems does offer a cause for concern. It does come with a number of advantages and the first has to be security because it is extremely strong. It comes as part of Windows which means it can benefit from Microsoft support when required. It can get around firewall problems fairly easily and there is the option to use Perfect Forward Secrecy. There are some disadvantages such as the fact that it only works within a Windows environment and because Microsoft own it, unlike OpenVPN it cannot be checked independently for weaknesses. In a way, it is not a VPN protocol although it is treated as one but it acts as a protocol for controlling IPSec key exchange. It, therefore, benefits mobile users but it also benefits them because there is support for the Mobility and Multihoming protocol which makes it resistant to networks constantly changing. It supports a number of ciphers and is, therefore, extremely secure as well as being easy to setup. There are a number of options available but you should always look to choose OpenVPN when possible although IKEv2 is the best option if you are working on a mobile device. PPTP does not offer a huge amount of security and the fact that Microsoft has abandoned it should cause alarm bells to ring, therefore, this should not be chosen. Given the fact that OpenVPN is open source and is becoming increasingly more available then it is more than likely the right choice for most.

PPTP vs L2TP vs OpenVPN vs SSTP

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PPTP vs L2TP vs OpenVPN vs SSTP

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