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Capturing Packets with Tcpdump and Analyzing Them with Wireshark on Ubuntu

In this guide, I will show you how to analyze network packets on Linux. I will use the tools Tcpdump and Wireshark. This tutorial uses Ubuntu as OS, but it is applicable to other Linux distributions too.
The post Capturing Packets with Tcpdump and Anal…

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How to Determine OS of a Remote Host

When performing digital reconnaissance or penetrating testing, it’s important to fingerprint a network by understanding what operating system is used on a remote host. Nmap is a great tool for this job. Although normally associated with the cybersecurity field and penetration testing, Nmap can also be used for benevolent purposes, such as a system administrator […]

The post How to Determine OS of a Remote Host appeared first on Linux Today.

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| by Arround The Web

NetworkManager 1.34 Arrives with Better WireGuard Support, Many Improvements

Almost seven months in development, NetworkManager 1.34 is here to further improve support for the WireGuard VPN tunnel protocol and implementation by introducing support for WireGuard profiles to NetworkManager’s text user interface (nmtui), as well a…

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How to Troubleshoot DHCP Communication Problems on your Network

Use Nmap, tcpdump, and Wireshark to discover why your enterprise switch and clients aren’t communicating IP configurations correctly.
The post How to Troubleshoot DHCP Communication Problems on your Network appeared first on Linux Today.

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IPTraf: Real Time Interactive IP LAN Monitoring

There are a number of monitoring tools available. Moreover, I came across a IPTraf monitoring tool that I find very useful. It’s a simple tool to monitor Inbound and Outbound network traffic passing through the interface.
The post IPTraf: Real Time Int…

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How to Install Samba on RHEL and CentOS Stream

Operating system users might have different egoistic opinions on which operating system distribution is better but always find a common ground when it comes to issues like finding ideal file sharing solutions. Samba is such a solution. Whether you are on a Windows or Linux operating system environment, Samba makes it possible to flexibly share […]

The post How to Install Samba on RHEL and CentOS Stream appeared first on Linux Today.

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UPDATED] – 20 Netstat Commands for Linux Network Management

netstat (network statistics) is a command-line tool for monitoring network connections both incoming and outgoing as well as viewing routing tables, interface statistics, etc.
The post UPDATED] – 20 Netstat Commands for Linux Network Management a…

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How to Install and Use Ping Command in Linux

PING is undoubtedly a millennial word. It’s rooted in quotidian life and henceforth has become a concept to be unveiled. Many of us might be known of the fact that the word ‘ping‘ is not actually a word but an acronym. PING stands for Packet Internet G…

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BigSig: Vulnerability in Mozilla NSS Could Allow Code Execution when Handling Certificates

A cryptographic library set NSS Mozilla (Network Security Services) has been identified in the critical vulnerability (( CVE-2021-43527 CVE-2021-43527)) that could lead to malicious code execution when processing DSA or RSA-PSS digital signatures specified using the DER ( Distinguished Encoding Rules). The issue codenamed BigSig has been fixed in NSS 3.73 and NSS ESR 3.68.1. […]

The post BigSig: Vulnerability in Mozilla NSS Could Allow Code Execution when Handling Certificates appeared first on Linux Today.

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Wireshark 3.6 Network Analyzer Release

After a year of development, a new stable branch of the Wireshark 3.6 network analyzer has been released. Recall that initially the project developed under the name Ethereal, but in 2006, due to a conflict with the owner of the Ethereal trademark, the …

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How to Install Zabbix on Rocky Linux and AlmaLinux

Proper monitoring is an essential ingredient for the effective management of your overall IT infrastructure. A robust real-time monitoring solution like Zabbix provides detailed visibility of your network and application performance.
The post How to In…

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How To Find Available Network Interfaces On Linux

This detailed tutorial addresses all the possible ways to find available network interfaces on Linux and Unix operating systems.
The post How To Find Available Network Interfaces On Linux appeared first on Linux Today.

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| by Scott Kilroy

How to Configure Static IP Address on Ubuntu 20.04

Source: LinOxide

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Does an Ethernet splitter slow down speed?

This post summarises detailed information about ethernet splitter, its speed, and different FAQ to help you choose the best hardware.
The post Does an Ethernet splitter slow down speed? appeared first on Linux Today.

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How to Configure Static IP Address on Ubuntu 20.04

A static or fixed IP address is an IP address that does not change. Whether you reboot your device or home router, your device with a static IP address will get the same IP address. Here’s how to set a static IP address on your Ubuntu 20.04 insta…

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Nethogs – Monitor Linux Network Traffic Usage Per Process

There are tons of open-source network monitoring tools available for the Linux operating systems on the web. For example, you can use the iftop command to monitor bandwidth usage, the netstat command, or ss command to see reports on interface statistic…

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How to Install Snort on Ubuntu 20.04

Source: LinOxide

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15 Useful ifconfig Commands to Configure the Network Interface in Linux

ifconfig is short for “interface configuration”. It’s the utility for system/network administration in Unix/Linux operating systems to configure, manage and query network interface parameters via command-line interface or in a system configuration scripts. This article covers 15 ifconfig commands—with their practical examples—which might be very helpful to you in managing and configuring network interfaces in Linux […]

The post 15 Useful ifconfig Commands to Configure the Network Interface in Linux appeared first on Linux Today.

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Linux traceroute Command Explained with Examples

traceroute is a command line utility that prints the route (or hops) that a packet takes to reach another host. It is used for network diagnostics. In this article, we will discuss everything you want to know about the Linux traceroute command and how …

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| by Scott Kilroy

How to Install and Use vnStat on Ubuntu

Source: LinOxide

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