Symantec Data Loss Prevention is changing its support policies for proxy server compatibility for Network Prevent for Web. Symantec no longer certifies Symantec Data Loss Prevention (Network Prevent for Web) with third-party web proxies. Symantec plans to only test the ProxySG proxy solution.

Customers can use any ICAP compliant proxy with Network Prevent for Web. Symantec Data Loss Prevention supports ICAP (as specified in RFC 3507). This support includes the request modification (REQMOD) and response modification (RESPMOD) modes of ICAP.

The Network Prevent for Web server is compatible with a wide range of enterprise-grade third-party ICAP-compliant proxies. Refer to the vendor documentation for known limitations. If you have specific support questions, consult your web proxy vendor.

If you experience issues using Network Prevent for Web when using it with a third-party proxy, Symantec Support will attempt to reproduce the issue using ProxySG. If the issue is reproducible and determined as a DLP issue, Support will attempt to provide a solution. If the issue is not reproducible with ProxySG, Support will direct you to the third-party proxy vendor to resolve the issue. Non-reproducible issues are likely the result of the third-party proxy.