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SSH is the industry standard for connecting to a network device. This is unsurprising, given that the legacy protocol, telnet, only allows for insecure remote management. Rather than that, SSH stands for Secure Shell for a reason: it is a truly secure protocol that incorporates all modern security features. As a result, we cannot create SDN software without incorporating SSH. We will demonstrate how to use SSH in a Python program to connect to and control remote devices in this Python SSH Tutorial. We will demonstrate how to do things correctly in this article. Are you in a hurry? Simply scroll down for the TL;DR version. SSH encrypts traffic between you and the server, end-to-end. Read More: Python Multithreading Tutorial: Everything You Need to Know Before we start about SSH Tutorial for Python and how to connect to Cisco devices Before we begin the Python SSH Tutorial, we'll need a mechanism to validate that our program works properly. You are already set if ...

If you're a fan of SDN like me, you've probably experimented with automating SSH connections to network devices. We covered this topic extensively in a previous SDN article. However, this is dependent on channel-based SSH, which not all devices support. Dealing with interactive CLI, in particular, can be a real pain – and Cisco devices have it. So, no more suffering, my friend. In this article, we'll look at how to put together a better solution for making Paramiko Cisco SSH connections.   Table of Contents about Paramiko's Cisco SSH Connection and Troubleshooting Here’s what we are going to cover today: Channels or Shell? Structuring the Project Writing the SubDrivers for Paramiko Cisco connections The SSH Driver The Paramiko Cisco Connection Wrapping it up   Channels or Shell?[ps2id id='Channels or Shell?' target=''/] SSH channels are fantastic if you want to operate a device via SSH programmatically. E...