---
title: Session Log Control in SSH Proxy
slug: singleconnect-reference-guide-3-3-0/session-log-control-in-ssh-proxy
description: Learn the essential usage scenarios of SSH Proxy in this informative document. Discover how to securely hide sensitive data in command on connected devices, thanks to the use of property keys defined with regular expressions. Follow a practical example de
docTags: 
createdAt: 2022-07-27T14:05:02.000Z
---

In some of the usage scenarios of SSH Proxy, sensitive data can be used in the command on the connected device. It is possible that this sensitive data used is not wanted to be displayed openly in logs. In the case of thensso.cli.secret\_masking\_patternproperty key must be defined on the corresponding element type.The definition should have a precise form. For example, thepart of thiscommandthatcontains the sensitive information, can be defined as $$value$$ at the property key with regular expression.

***Property key definition***:

nsso.cli.secret\_masking\_pattern= sshpass -v -p "$$value$$" ssh .\*

***CLI Input:***

sshpass -v -p "Password1" ssh [JohnDoe@192.168.1.1](mailto\:JohnDoe@192.168.1.1Session)

***Session and Command Log lines at Single Connect:***

sshpass -v -p "\*\*\*\*\*" ssh JohnDoe\@192.168.1.1