---
title: Command Filtering for SSH/Telnet Proxy
slug: kronpam-end-user-guide-3-5-0/command-filtering-for-sshtelnet-proxy
description: Learn how Black key policy key enforcement works and how it alerts users with an informative message on their session window. Explore real-life examples of policy actions like Double Confirmation, Generate Error, Managerial Approval, and Location Confirma
docTags: 
createdAt: 2022-08-10T12:14:15.000Z
---

When Black key policy key enforcement is part of the defined policies, you will see an alert message in the session window.


::Image[]{src="https://api.archbee.com/api/optimize/g9cApVza9NIhSh0pjZYtA/_Ha49SiDEIDuVrwaHh_jy_image.png" size="70" width="621" height="291" caption="Double Confirmation Policy Action" position="center" showCaption="true"}

::Image[]{src="https://api.archbee.com/api/optimize/g9cApVza9NIhSh0pjZYtA/CgeIQYZc-k-AgpRDRgybT_image.png" size="68" width="649" height="330" position="center" caption="Error" showCaption="true"}

::Image[]{src="https://api.archbee.com/api/optimize/g9cApVza9NIhSh0pjZYtA/7kRvh0tflPBchQ5vyDjJ1_image.png" size="70" width="621" height="358" caption="Managerial Approval Policy Action" position="center" showCaption="true"}

::Image[]{src="https://api.archbee.com/api/optimize/g9cApVza9NIhSh0pjZYtA/RucpIA6sRFsjBDYpusiuM_image.png" size="70" width="621" height="363" caption="Location Confirmation Policy Action" position="center" showCaption="true"}