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How to block SSTP based VPN connections to traverse out of corporate network?

April 26, 2017based block corporate Network SSTP Traverse VPN

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How to block SSTP based VPN connections to traverse out of corporate network?

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For any reason, if the network administrator wants to block all outgoing SSTP based VPN connection, then it can be done at the web proxy level. If there is a web proxy (i.e. forward proxy) deployed inside the corporate network which can do filtering of different attributes inside HTTP CONNECT header, then SSTP based connections can be blocked as it adds a fixed field (SSTP_VERSION: *) inside the HTTP CONNECT header.