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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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How to Install Ntopng on Ubuntu 20.04

The post How to Install Ntopng on Ubuntu 20.04 appeared first on LinOxide.

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What IP – A Network Information Tool for Linux

What IP is a graphical-based simple network information tool which provides information about IP address and listening ports. It is written in Python and GTK3. It is released under GPL3 license and the source
The post What IP – A Network Information To…

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| by Scott Kilroy

How to Configure Static IP Address on Ubuntu 20.04

Usually, when a client system connects to a network via WiFi or an ethernet cable, it automatically picks an IP address from the router. This is made possible through the DHCP server which auto-assigns
The post How to Configure Static IP Address on Ubu…

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See all open ports

lsof -i TCP| fgrep LISTEN

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| by Scott Kilroy

Using netstat

netstat -ntulp displays everything that is listening tcp and udp and the ip that it is listening on

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| by Scott Kilroy

View network traffic (by port number)

To view web traffic (for example) use tcpdump -s 0 -w – port 80 | tcpdump -r – -A

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Check open ports with nmap

If you want to check if a particular port is open run nmap -p PORT_NUMBER IP_OR_DOMAIN_NAME for example nmap -p 80 example.com To use nmap to check if a port is open for tcp nmap -p port ipaddress for udp nmap -sU -p port ipaddress  

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