A Secure Socket Layer virtual private network (SSL VPN) differs from the usual Internet Protocol Security VPN in that it can be used within a standard web browser. Therefore, the end user doesn’t need to install a specialized software on their computer. An SSL VPN allows remote users access to restricted network resources via secure pathways. Network traffic is encrypted, so the user will appear to be on the local network, no matter where they are actually located. The SSL VPN also differs from a standard VPN because it works with a VPN protocol group that includes OpenVPN, SoftEther and SSTP (the best VPN for China).
OpenVPN is an SSL VPN open-source software application that uses VPN techniques to create a secure connection between sites. The OpenVPN security protocol uses SSL for the key exchange (IKE). The advantages of an OpenVPN include portability, ease of configuration, compatibility with NAT, and dynamic addresses.
SSTP, or Secure Socket Tunnelling Protocol, is another form of SSL VPN that provides a means of transporting L2TP or PPP traffic through an SSL channel. SSTP provides the highest level of data security and safety. SSTP also offers high accessibility as it mimics a normal HTTP connection, which typically cannot be banned. This makes SSTP the best VPN option for China.
SoftEther is another SSL VPN and a good alternative to OpenVPN. SoftEther is a free, cross platform, open source VPN solution. It employs strategies such as parallel transmission that can reduce latency and increase throughput. SoftEther is based on HTTPS, which means it is permitted by almost every firewall. This is the main advantage of SoftEther over other VPN options.