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Limitations
Limitations
Forcepoint GRE Guide | Forcepoint Web Security Cloud and Hybrid Solutions
The following items are known limitations of the Forcepoint GRE solution.
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Internet Explorer: version 7 and above is required. Versions earlier than this do not support SNI, which is required for Forcepoint GRE.
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SNI is required for HTTPS traffic when using transparent proxy.
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Windows XP does not support SNI and is, therefore, not supported for Forcepoint GRE.
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Encrypted Client Hello (aka Encrypted SNI) is not supported when using transparent proxy.
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To support PAC file enforcement, you must use the alternate (port 80/443) PAC file address. The standard PAC file address (using port 8082/8087) is not supported.
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Forcepoint Web Security Endpoint is not supported for use with Forcepoint GRE.
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Secure form-based authentication is not supported for use with Forcepoint GRE.
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When using GRE tunneling, Dropbox is not supported for use with the Protected Cloud Apps feature in Forcepoint Web Security Cloud.
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Safari: if the customer policy has authentication enabled, Safari users must change the Block cookies setting to Never to ensure web pages load properly.

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Limitations
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