When using the Symantec Endpoint Protection (SEP) for Mac client and Web Traffic Redirection (WTR), users reported 502 Bad Gateway responses when browsing the Internet, shortly after resuming from a sleep or hibernation state.
Bad_gateway error displayed on browser, when user start browsing websites.
macOS 10.13.x and 10.14.x
This issue is fixed in Symantec Endpoint Protection 14.2 RU1 MP1. For information on how to obtain the latest build of Symantec Endpoint Protection, see Download the latest version of Symantec software here.