Cloud & Networking
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You're reading from  OPNsense Beginner to Professional

Product typeBook
Published inJun 2022
PublisherPackt
ISBN-139781801816878
Edition1st Edition
Concepts
Network Security
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Author (1)
Julio Cesar Bueno de Camargo
Julio Cesar Bueno de Camargo
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Julio Cesar Bueno de Camargo

Julio Cesar Camargo is a cybersecurity professional with +15 years of experience working with open-source software. He started with Conectiva Linux and later became the official instructor helping dozens of students. As an aviation enthusiast and airplane pilot, he strives to bring all the aviation best practices to his professional routine. Julio started working with OPNsense in 2016, contributing to the project with code, official forum moderation, articles, Udemy course, and promotions in Europe. He founded Cloudfence in 2018, a cybersecurity startup and a Luso-Brazilian-managed security services firm with an open-source DNA. As its CTO, Julio aims to spread open source security as a service to companies from different parts of the world.
Read more about Julio Cesar Bueno de Camargo

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Network diagnostics and troubleshooting

It's important to know how to configure network interfaces in OPNsense, but it is more important to know how to solve problems related to it. In this section, we'll explore the common issues and see how to solve each one.

First of all, let's see what diagnostic tools are available in WebGUI.

All of the following options can be accessed from Interfaces | [tool name]:

  • ARP Table: This page lists the operating system ARP table, in which you can find the IP and MAC addresses listed in the following fields:
    • Device Manufacturer, based on MAC OUI (organizationally unique identifier)
    • Interface, using the FreeBSD NIC name
    • Interface Name, using the configured one in the OPNsense interface description
    • Hostname, if it resolves hostnames
  • NDP Table: Like the ARP Table page, this page will show the same information fields, but for IPv6 addresses based on the Neighbor Discovery Protocol (NDP). Due to the similarity with ARP, you can...
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OPNsense Beginner to Professional
Published in: Jun 2022Publisher: PacktISBN-13: 9781801816878
© 2022 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Julio Cesar Bueno de Camargo

Julio Cesar Camargo is a cybersecurity professional with +15 years of experience working with open-source software. He started with Conectiva Linux and later became the official instructor helping dozens of students. As an aviation enthusiast and airplane pilot, he strives to bring all the aviation best practices to his professional routine. Julio started working with OPNsense in 2016, contributing to the project with code, official forum moderation, articles, Udemy course, and promotions in Europe. He founded Cloudfence in 2018, a cybersecurity startup and a Luso-Brazilian-managed security services firm with an open-source DNA. As its CTO, Julio aims to spread open source security as a service to companies from different parts of the world.
Read more about Julio Cesar Bueno de Camargo

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