Junos can allow users to authenticate using an SSH key pair, rather than using a username and password. In this post we’ll look at the following examples: Adding An SSH Key For A Regular User First, we need to generate an SSH key pair. In this case, we’ll do this from a Linux host, allow […]
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Allowing the root user to log in via SSH is a straightforward change, but it is not something I recommend. There is a better way of achieving the same outcome, which is to su to the root user. Allowing Root Login Via SSH To allow root to log in via SSH, we need to add
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It is really easy to compare configuration files on Junos. In this post we’ll look at three common scenarios: To help make the examples below clearer, I have made 11 commits already. Each commit set a description on the lo0 interface and a commit comment as per the table below. The first commit we make
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The Junos file command allows us to manipulate files on the local file system and copy files to and from remote servers using protocols such as SCP, FTP, and HTTP. Junos Copying Files Junos allows us to copy files on the local file system and to remote hosts. It can also copy files between routing
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In this post, we’re going to look at Juniper prefix-lists. What they are, how to configure them, and how they behave. You may also like to read about route filters, which provide some additional matching options. What Is A Prefix List A prefix list is exactly what it sounds like, a list of prefixes or
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VRRP stands for Virtual Router Redundancy Protocol. It is used to create a Virtual IP (VIP) address, which can then be used as the default gateway for network clients or as a next hop for a static route. VRRP is one of several First Hop Redundancy Protocols (FHRP) and is similar to Cisco HSRP. The
In this post, we’re going to look at how to configure VRRP on Juniper devices. If you need a refresher then have a look at VRRP basics. There is also how to troubleshoot VRRP on Junos. We’ll start with a very basic configuration before progressing to adjusting timers, authentication, and tracking interfaces and routes. Lab
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In this post, we’re going to look at how to troubleshoot VRRP issues on a Junos device. If you haven’t already, you may like to review VRRP basics and how to configure VRRP on Junos. What Does Good Look Like Before we can start troubleshooting, we need to know what good looks like. For VRRP
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What Is DHCP DHCP stands for Dynamic Host Configuration Protocol. It is a way to automatically give an IP address and related configuration details to an end device such as a laptop or smartphone. Why Is DHCP Used DHCP is used to ease the burden of administering IP addressing for end devices. Imagine a world