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README.md

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+# pan-globalprotect-okta
+
+Command-line client for PaloAlto Networks' GlobalProtect VPN integrated with OKTA.
+
+This utility will do the _authentication dance_ with OKTA to retrieve `portal-userauthcookie`,
+which will be passed to [OpenConnect with PAN GlobalProtect support](https://github.com/dlenski/openconnect)
+for creating actual VPN connection.
+
+It also supports Google and OKTA two factor authentication and can work without
+user interaction, if initial TOTP secret is provided. Otherwise, it will ask for
+generated code. If this feature will be used, [pyotp](https://github.com/pyotp/pyotp)
+dependency is required.
+
+To gather TOTP secret, there are two possibilities - either scan the provided QR
+code with _normal_ QR code scanner and write down the secret. Or create backup
+from current OTP application in phone. Some applications have this feature, but
+some don't. For example, andOTP on Android do support this feature.
+
+## usage
+```
+   ./gp-okta.py gp-okta.conf
+```
+
+## configuration
+
+Configuration file should be self-explanatory. Options can be overridden with
+`GP_` prefixed respective environment variables, e.g., `GP_PASSWORD` will
+override `username` option in configuration file.
+
+## known issues
+
+If `openconnect` returns with `ioctl` error, then this version has a bug, which
+requires to prefix cookie with newline. Set `bg.nl = 1` in configuration file.