Networking Articles - jcutrer.com

UBNT AirFiber CLI Commands (AF-5x)

By JC | February 13, 2018 | Comments 13 comments

Here are all of the commands that you can issue on an Ubiquiti AirFiber Radio from an ssh terminal connection. I found myself always googling and digging through the ubiquiti forum to try and find the command I needed. I compiled all the known AirFiber commands here in one place. Enjoy!

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MikroTik RouterOS Automation with NAPALM

MikroTik RouterOS Automation with NAPALM

By JC | February 5, 2018 | Comments 3 comments

In this tutorial, we will explore using the NAPALM python module to query data from a MikroTik Router.

Before we begin, you are expected to have python3 and pip installed as well as access to a MikroTik router running RouterOS. NAPALM will attempt to connect to the router on the default API port of 8728. You will need to enable the API service which is found in IP | Services using winbox

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MikroTik RouterOS Upgrade Procedure

MikroTik RouterOS Upgrade Procedure

By JC | February 4, 2018 | Comments 9 comments

In this article, I cover the exact steps required to upgrade a MikroTik Router running RouterOS. I will also publish a video that covers these steps.

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MikroTik Backup and Restore Procedure

MikroTik Backup and Restore Procedure

By JC | February 4, 2018 | Comments 12 comments

I know this topic has been covered elsewhere but I want to provide clear and concise steps on how to backup a MikroTik router. I will also publish a video that covers these steps.

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How to disable & block SSH access to a MikroTik Router

How to disable & block SSH access to a MikroTik Router

By JC | December 17, 2017 | Comments 1 comment

In this article, we will look at several ways to limit or block SSH access to a MikroTik RouterOS device.

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Lantronix EDS2100 Serial Server .•. Essentials Guide

Lantronix EDS2100 Serial Server .•. Essentials Guide

By JC | December 17, 2017 | Comments 0 Comment

This article was produced as quick reference for the LANTRONIX EDS2100 Serial Server, a 2 port ethernet serial server. The device features to DB9 serial interfaces we flexible configurations including support for secure protocols such as SSHv2.

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MikroTik Config: cAP Lite Wifi Router w/L2TP VPN & Guest Wifi

MikroTik Config: cAP Lite Wifi Router w/L2TP VPN & Guest Wifi

By JC | December 17, 2017 | Comments 3 comments

This is an example configuration file for the MikroTik cAP Lite. The cAP Lite is a tiny access point device w/ full RouterOS router functionality. The router features 1 10/100 ethernet interface and can be powered with 5V MicroUSB or any PoE inject 10-60V.

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MikroTik: L2TP/IPsec VPN Firewall Rules

MikroTik: L2TP/IPsec VPN Firewall Rules

By JC | December 17, 2017 | Comments 9 comments

When you configure a L2TP/IPSec VPN on a MikroTik RouterOS device you need to add several IP Firewall (Filter) rules to allow clients to connect from outside the network.

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MikroTik Script: Push Router Stats to dweet.io

MikroTik Script: Push Router Stats to dweet.io

By JC | December 1, 2017 | Comments 4 comments

In this tutorial, I will show you how to create a RouterOS script to push Router statistics up to dweet.io and then use that data to create a nice monitoring dashboard with slick gauges and graphs over at freeboard.io.

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UniFi Switch: How to access the CLI & Config via SSH

UniFi Switch: How to access the CLI & Config via SSH

By JC | November 22, 2017 | Comments 15 comments

In this article, I will show you how to access a UniFi switch’s CLI interface and configuration.

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HP LaserJet Printer Telnet Commands

HP LaserJet Printer Telnet Commands

By JC | October 4, 2017 | Comments 2 comments

A default out-of-the-box HP network printer has a running telnet server that can be used to configure and control the printer. In this article, we will explore what commands are available and I will also show you how to disable the telnet server on the printer.

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How to backup config from EdgeSwitch Web GUI

How to backup config from EdgeSwitch Web GUI

By JC | September 18, 2017 | Comments 0 Comment

The Ubiquiti EdgeSwitch is a Web-based and CLI managed ethernet switch from Ubiquiti Networks. In this article we will walk thought the step to backup and download the switch configuration file from both the Web-GUI and CLI (command-line interface).

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Sierra GX450 LTE Modem .•. Essentials Guide

Sierra GX450 LTE Modem .•. Essentials Guide

By JC | August 16, 2017 | Comments 7 comments

This a quick reference guide to configuring and troubleshooting the Sierra Wireless GX450 4G/LTE modem.

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MikroTik Tutorial: RouterOS SSH Public Key Auth using RSA keys

MikroTik Tutorial: RouterOS SSH Public Key Auth using RSA keys

By JC | September 10, 2015 | Comments 1 comment

A Step-by-Step guide to configure SSH Public Key Authentication on a MikroTik router using an RSA keys

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How to install Ubiquiti Unifi controller ver 4.6.6 on ubuntu 15.04

How to install Ubiquiti Unifi controller ver 4.6.6 on ubuntu 15.04

By JC | September 8, 2015 | Comments 2 comments

With the recent announcement of Ubiquiti’s Unifi AC Wireless Access Points they also released a new version of the Unifi controller software.

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MikroTik Tutorial: Adding a 2nd Wireless SSID Virtual Access Point

MikroTik Tutorial: Adding a 2nd Wireless SSID Virtual Access Point

By JC | December 4, 2014 | Comments 6 comments

How to configure a VirtualAP in RouterOS

This example assumes you are starting with the RouterOS default configuration. The screenshots below detail the steps required to add a second access point to a MikroTik router. This quick tutorial does not address the setup steps required to secure your wireless network WPA/WPA2 wireless authentication.

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