Chrome

How-To

Manually install an extension

• Download the extension source (for instance from GitHub)
• In Chrome, Go to More tools → extensions, and click the checkbox Developer mode.
• Click on Load unpacked extension..., and point it to extension source directory (containing manifest.json.

Fix ZScaler authentication - import ZScaler SSO cookie

ZScaler is a corporate filtering proxy. Users must login with Single-Sign-On to get access to internet resources. If authentication fails in Chrome but, say, works in Internet Explorer, one can import the authentication cookie in Chrome/Chromium and hence skip the failing authentication step (from calebcoffie.com).

• First, go to C:\Users\%username%\AppData\Local\Microsoft\Windows\Temporary Internet Files, and locate the zscaler cookie, which is named cookie:%username%@gateway.zscaler.net.
• Open the cookie in WordPad (or copy/paste into WordPad). You should have something like this, where the XXXXXXXXXXXXXXXXXXX are the actual cookie (secret) value:

_sm_au_c
XXXXXXXXXXXXXXXXXXX
gateway.zscaler.net/
...
...
...
*
_sm_up_c
XXXXXXXXXXXXX
gateway.zscaler.net/
...
...
...

• In Chrome, create a new cookie using extension EditThisCookie, and import both cookies above using the templates below, where the cookie value must be replaced with the one found above:

{ "domain": ".gateway.zscaler.net", "hostOnly": false, "httpOnly": false, "name": "_sm_au_c", "path": "/", "secure": true, "session": true, "storeId": "0", "value": "XXXXXXXXXXXXXXXXX", "id": 1 }

{ "domain": ".gateway.zscaler.net", "hostOnly": false, "httpOnly": false, "name": "_sm_up_c", "path": "/", "secure": true, "session": true, "storeId": "0", "value": "XXXXXXXXXXXX", "id": 1 }