System
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Login Classes
Junos Login Classes define user access privileges, permissions for using CLI commands and statements. 1. Login Classes Junos OS includes predefined login classes that can’t be modified: Login Class Permission Flag Set super-user all operator clear, network, reset, trace, and view read-only view unauthorized none Additionally, we define any number of login classes. However, we can […]
System Scripts
Junos automation consists of a suite of tools used to automate operational and configuration tasks on network devices running Junos. In this post we will configure different system scripts on the router. 1. Basic system script configuration First, we need to copy the scripts to the router: The script files must be copied to a […]
Syslog
We can configure Junos syslog at the [edit system syslog] hierarchy level, and we can direct the system syslog messages to the following destinations: (console | file filename | host destination | user username): For all destinations we must mention the Facility and Severity: The Junos OS system logging facilities that you can specify in […]
Protect RE – Configuring the Protect RE Filter
Intro In this post we will configure firewall filters to control traffic destined to the Routing Engine. As mentioned in the previous post, Common Network Protocols, we must know how the protocols work, how they are transported through the network, and how you can match them in the firewall filter. But before starting with the […]
Protect RE – Common Network Protocols
Protect RE (Routing Engine) is a Juniper Networks security best practice that uses a stateless firewall filter on the loopback interface (lo0) to secure the control plane. It restricts management traffic (SSH, SNMP) to trusted sources and protects the CPU from malicious traffic or resource exhaustion (e.g., DoS attacks). Key Aspects of Protect RE on Juniper […]