Following errors or warnings may be observed when running ActiveX applets from Internet Explorer. ActiveX publisher name changes to "unknown" when connection is established via SWG HTTP proxy.
This issue is resolved in Symantec Web Gateway version 5.2.2. Please upgrade to this version at earliest convenience.
Please also note: IP address whitelisting is not supported in proxy mode, only domain name whitelists (using FQDN) are supported.