Does DLP web prevent server support the "204" (no mod) ICAP message response ?
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Does DLP web prevent server support the "204" (no mod) ICAP message response ?
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Article ID: 159592
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Updated On: 01-16-2023
Products
Data Loss Prevention Network Prevent for Web
Issue/Introduction
BlueCoat has an ICAP extension that instead of receiving the entire object back from the ICAP Client it would only receive a 204 message, which would mean “no modification to the object made” and would allow the proxy to pass the object.
Resolution
If DLP web Prevent receives an “Allow: 204” in the ICAP request and the request does not need any modification, then Prevent does respond with “ICAP/1.0 204 No Content” and does not send the entire ICAP object back to the proxy.
ICAP Status Codes https://knowledge.broadcom.com/external/article/160200/icap-status-codes.html