4. OpenVPN—Open VPN is open source and it uses other ope-source technologies like SSL v3/TLSv1 and OpenSSL encryption library protocols. It is not port specific and can be configured on any port. This feature enables OpenSSL VPN traffic indistinguishable from other HTTPS traffic and not easily gets blocked. AES encryption makes it more secure than blowfish encryption. It is easily configured. OpenVPN isn’t vendor supported that is why a third party application is required to run it on mobile devices and computers.
5. SSTP—SSTP is Secure Socket Tunneling Protocol. It was integrated in windows Vista Service Pack 1. It is a Microsoft protocol and works best on windows. It is more stable on windows. It can be configured along with very secure AES encryption. It also uses SSL v3 and has the ability to pass firewalls. (Hoffman, 2015)
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Several components required to implement VPN depends on the type of VPN i-e. Remote Access VPN, or site-to-site VPN. Network design is crucial to decide the throughput, choice of devices and number of users. There are two types of networks where VPN is needed to implement.
1. Site-to-site VPN—is provides connection between branches i-e. LAN-to-LAN VPN with their own internet instead of dedicated leased lines.
2. Remote-access