If you are experiencing web page latency or rendering issue when loading a particular site or mutiple sites via our Symantec Web Security.Cloud proxy servers, we will need to have the following questions answered, these questions and steps need to be taken while the issue is happening.
One or more web pages are loading slow when going through the proxy.
If the page is not rendering correctly, e.g. X within the image holders, missing cascading style sheets (CSS),
For questions #6, #7, we will need to generate HAR files to provide us with additional information to help us diagnose the problem.
To compare the web page loading times when going direct (no proxy) vs. proxy as well as to gather more information about the web page not rendering correctly, please see the instructions below on how to capture HAR content depending on the web browser being used:
The easiest way is using HttpWatch basic Edition (Free).
This tool is a GUI based tool which allows for viewing in real-time how long a page takes to load. The program lists all the sources that the page pulls all the content from and the time it takes to load each component in a page. It provides a holistic view of the page load time, rather than what is perceived by the user.
Starting with Firefox 41, HAR files can be created without any additional extension.
You can record your HTTP session using the Network tab in the Developer Tools in Chrome.
.Please confirm with a selection of URLs the page-load times, direct/via the proxy, direct/via the client site proxy server or any applicable scenario for comparison below as well as providing us with the HAR file(s).
|Site URL||No Proxy||Browser>Proxy||Browser>CSP||Firewall>Proxy||SC>ON LAN||SC>OFF LAN|
Once the requested information has been compiled and provided to the Symantec Technical Support team, we will attempt to recreate the issue on our side as some latency is expected when traffic is being routed through a proxy server.