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HTTPS Inspection ignores HTTPS traffic via proxy with authentication
Symptoms
  • HTTPS traffic via proxy with NTLM authentication is not inspected by HTTPS Inspection and is bypassed.
  • HTTPS traffic via proxy with Kerberos authentication is not inspected by HTTPS Inspection and is bypassed.
Cause

This is an HTTPS Inspection limitation.

In case of proxy with NTLM Authentication, the reply to Security Gateway's "connect" request is "407 Proxy Authentication Required", so Security Gateway short-circuits the connection. As a result, HTTPS Inspection is not enforced.


Solution
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