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cn-ed L2TP, replaced SSL with SSL/TLS |
m Dating maintenance tags: {{Citation needed span}} |
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{{distinguish|Simple Symmetric Transport Protocol}}
'''Secure Socket Tunneling Protocol''' (SSTP) is a form of [[Virtual private network|VPN]] tunnel that provides a mechanism to transport [[Point-to-Point Protocol|PPP]] or {{citation needed span|text=[[Layer 2 Tunneling Protocol|L2TP]]|date=May 2016}} traffic through an [[Transport Layer Security|SSL]]/[[Transport Layer Security|TLS]] channel. SSL/TLS provides transport-level security with key-negotiation, [[encryption]] and traffic integrity checking. The use of SSL/TLS over [[Transmission Control Protocol|TCP]] port 443 allows SSTP to pass through virtually all [[Firewall (computing)|firewalls]] and [[proxy server]]s except for authenticated web proxies.<ref>{{cite web
| url=http://blogs.technet.com/b/rrasblog/archive/2007/01/17/sstp-faq-part-2-client-specific.aspx
| title=SSTP FAQ - Part 2: Client Specific
| |||