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Network monitoring on Linux

Network monitoring is the process of capturing and analyzing traffic across OSI layers 2 to 4, offering visibility into how data moves through the network and how different protocols interact during communication

Here are Linux-based network monitoring tools, categorized by the OSI layer they operate on 😎👆 #technology #software #cybersecurity

Find high-res pdf books with all my #linux related infographics at https://study-notes.org

2025/4/8 Edited to

Network monitoring on Linux involves various tools that can help system administrators optimize and secure their networks. Tools like netperf are instrumental in measuring bandwidth and latency at OSI layers 2, 3, and 4. Meanwhile, tcpdump and tshark serve as command-line options for capturing and analyzing traffic. Wireshark offers a comprehensive GUI for monitoring TCP connections, which makes it easier to visualize connection states and bandwidth usage. Additionally, tcptrack allows users to see the current state of TCP connections, giving a real-time overview of network activities. Understanding how to use these tools effectively can lead to improved network performance and enhanced cybersecurity measures. Based on the latest trends in network monitoring, Linux users should adopt a combination of these tools to gain a holistic view of their network's health and dynamics. Exploring resources like high-resolution PDFs with infographics on network tools can further deepen knowledge in this area. For those aiming to enhance their Linux skill set, thorough research into these monitoring solutions is crucial.

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An infographic titled 'Types of Network Monitoring on Linux' categorizes tools into Active Probing, App-level Session Monitoring, Aggregate Traffic Monitoring, and Packet Level Sniffing. Each category lists various command-line tools like ping, iperf, tcpdump, and nethogs for different monitoring purposes.

Different types of network monitoring on Linux

In Linux, there are many ways to monitor network traffic from command line. Some tools sniff individual network packets while others report aggregated traffic stats Here are a categorized list of network monitoring tools for Linux 😎👆 #devops #softwareengineer #technology #TechTips

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6 Free Online Certifications to Boost Your Resume

Hi, lemons! In a competitive job market, every added qualification on your resume helps you stand out. Here are six free online certification programs that can significantly enhance your resume and increase your hireability: 💖 Linux Foundation Certified IT Associate (LFCA): This certification fr

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Cybersecurity careers, I wish I knew sooner..

Discover the Cybersecurity Careers You Need to Know About 🔒 As someone who's been in the field, I'm sharing insights on two in-demand roles: 📊 Cybersecurity Analyst - Focuses on monitoring, detecting, and responding to security incidents - Requires strong analytical thinking and pro

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Tools and sites I use as a cybersecurity student 🌸

#cybersecuritystudent #cybersecurity #techgirlie

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5 Flexible Night Jobs You Can Do Remotely (+ Pay)

1. Customer Support Specialist - What You Do: - Provide assistance to customers via chat, email, or phone for companies that offer 24/7 support. - Resolve issues, answer inquiries, and process orders or returns. - Why It’s Flexible: Many companies, especially in tech, e-commerce, and SaaS,

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6 Free Online Study Resources For Students ✨️

Hi, lemons! Whether you’re rocking the high school vibes or acing college life, let’s talk about some free online resources that’ll light up your learning journey. 🚀 In this post, you can explore my curated list of free online resources that cater to various learning needs. From interactive cou

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An infographic titled 'Linux Networking CLI Tools' by Dan Nanni, categorizing various command-line tools. It lists tools for packet sniffing, network stack querying, routing path discovery, bandwidth monitoring, delay measurement, DNS querying, network configuration, and port usage.

Linux networking CLI tools

Linux offers a rich set of command-line tools for network diagnostics, monitoring and configuration. Here are a categorized list of networking CLI tools available on Linux 😎👆 #software #devops #networking #techtips Find high-res pdf books with all my #linux related infographics at

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An infographic titled 'Linux curl Command Examples' provides a comprehensive list of curl commands. It covers HTTP GET operations with options like user-agent and custom headers, HTTP POST/PUT operations for data and file uploads, and various file download operations including resuming and rate-limiting. Created by Dan Nanni.

Linux curl command examples

The curl command is a flexible tool that lets you send or receive data from servers using protocols like HTTP, HTTPS, FTP, and others, all from the command line Here are useful curl command examples 😎👆 #devops #opensource #software #TechTips Find high-res pdf books with all my #lin

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A Linux I/O Redirection cheat sheet created by Dan Nanni, detailing various shell commands for redirecting, appending, and combining standard input, output, and error streams. It includes examples like `cmd < file`, `cmd > file`, `cmd 2> file`, `cmd > file 2>&1`, and `cmd <<< "string"` with their corresponding descriptions.

Linux I/O redirection cheat sheet

Here is a concise reference of Linux shell operators for redirecting, appending, and combining standard input, output, and error streams 😎👇 Find high-res pdf ebooks with all my Linux related infographics at https://study-notes.org #linux #sysadmin #infosec #devops #softwareengine

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sure you got the skills. but you got the knowledge

how many times have you seen articles saying these are x skills needed the question should be is how do I get these skills how do I practice these skills this is an example of skills to learn how do I use nslookup how to I use ping how do I use traceroute these 3 commands are some networki

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Linux distros for cybersecurity enthusiasts

Linux distros tailored for cybersecurity and privacy offer hardened security, anonymity features, and forensic tools to safeguard users, protect privacy, and support ethical hacking and incident response Here are cybersecurity focused specialty #linux distros 😎👆 #privacy #software Find

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An infographic titled 'Free Online Learning Resources' lists numerous websites for learning Linux, Go, AWS, Docker, Python, JavaScript, Kubernetes, and other tech topics. It emphasizes upskilling through free, high-quality online platforms for various technologies.

Mastering Technology Essentials

✅ My latest new eBook: Mastering Technology Essentials All my best-selling eBooks on Linux, cybersecurity, and networking are now rolled into this one powerhouse book: “Mastering Technology Fundamentals”, with brand-new chapters on DevOps and hardware to make it even more complete. The quali

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A graphic asking 'What are useful TUI-based terminal apps for Linux?' with a Linux penguin, a thinking person, question marks, and a film clapperboard, all on a black background.

A screenshot of the lazyssh terminal UI, displaying a list of SSH servers with details like IP, last SSH time, and tags. It's described as a Go-based SSH manager for `~/.ssh/config` entries.

A screenshot of the nvitop terminal UI, showing real-time monitoring of NVIDIA GPU metrics, including fan speed, temperature, power usage, memory usage, and running processes.

Useful TUI terminal apps on Linux

Ever tried a Linux TUI app? A Text User Interface lets you control software right from your terminal — with clean, text-based menus and interactive screens — no desktop needed. Perfect for power users who love efficiency and minimalism. Here are some of the best looking and most useful TUI apps

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The image illustrates how Linux cgroups manage resources like CPU, Memory, Storage I/O, and Network. It shows creating cgroups, attaching a process (PID 12345) to `cgroup3` via `/sys/fs/cgroup/cgroup3/cgroup.procs`, and defining its resource limits (e.g., 512M memory.max, 10M/5M disk I/O).

How Linux cgroups work

On Linux, cgroups control and isolate CPU, memory, and I/O per process or container—this is what makes predictable container performance possible 😎👆 Find high-res pdf ebooks with all my Linux and DevOps related infographics from https://study-notes.org #linux #docker #kubernetes #de

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Recently diagnosed w/ Bipolar Disorder

If you have experience with bipolar or other mood disorders please leave a comment! I would like to connect with others! I was diagnosed with bipolar disorder Friday and I was SHOCKED. I was not believing that I could have bipolar disorder. I thought it was just terrible bouts of depression, feelin

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An infographic titled 'How SSH Reverse Tunnel Works' illustrates how an internal machine behind a NAT/firewall connects to a public relay server (VPS) to create a tunnel. An external client then connects to the relay server, which forwards the connection to the internal machine.

How SSH reverse tunneling works

An SSH reverse tunnel lets a remote server listen on a port and forward incoming connections through an SSH tunnel to a service running on another machine. It is commonly used to expose a service on a machine behind NAT or a firewall to the outside network 😎👆 Find high-res pdf ebooks with all my

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An infographic titled 'Defensive Linux Security' by Dan Nanni, illustrating a security wheel with categories like Firewalls, Sandboxing, Intrusion Detection, Log Monitoring, File Integrity Monitoring, Email Security, Data-at-Rest Encryption, Secure Shell, VPN, Password Security, Network Monitoring, Security Hardening, Rootkit Detection, and Security Auditing, each listing relevant tools and technologies.

Defensive Linux security wheel

Securing a Linux system takes more than one tool. It requires layered defense: vulnerability scanning, threat detection, real-time monitoring, and access control working together to reduce risk across multiple attack paths 😎👆 Find high-res pdf versions of all my cybersecurity related infographic

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Useful sysdig command examples

Sysdig is one of those hidden gem tools that shows exactly what your Linux system is doing in real time — system calls, containers, network traffic, file access — everything, no guessing. Here are useful sysdig command examples 😎👆 Find high-res pdf ebooks with all my cybersecurity related inf

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Tech jobs you can get in college

1. Software Developer - What You’ll Do: Design, code, test, and maintain software applications or systems, working on web apps, mobile apps, or backend systems. - Skills to Focus On: Programming languages (Python, Java, C++, JavaScript), Git, Agile methodologies. - Average Starting Sala

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Defensive Linux security tools

Securing a Linux system requires a layered strategy that combines tools for threat detection, vulnerability assessment, real-time monitoring, and strict access control Here are different types of defensive security tools available on Linux 😎👆 #technology Find high-res pdf books with all my

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A Linux watch command cheatsheet created by Dan Nanni, listing various commands to monitor system metrics in real-time. Examples include tracking CPU/memory usage, disk space, log file growth, network activity, and system errors, with refresh intervals specified.

Linux watch command cheatsheet

Ever wish you could just run a command and keep seeing it update automatically as things change? That is exactly what the watch command does on Linux Here are useful examples of the watch command 😎👆 Find high-res pdf ebooks with all my Linux related infographics at https://study-notes.org

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A Linux Cheatsheet for Engineers from @thealpha.dev, listing various commands categorized into File System Operations, File Permissions, Process Management, Networking, System Information, Package Management, Shell Scripting, User and Group Management, File Transfer, and System Services. A penguin on a skateboard is at the bottom.

Linux cheat sheet✨️

Where are my tech babes at?👩🏿‍💻 This is something I'm learning in school😍 It's been super fun typing things into the command line and actually getting a response🥹💕💕💕 One of my classmates shared this cheat sheet to make using Linux easier #imdoingsomethingright #CybersecurityAwarenessMon

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Useful TUI software on Linux

Linux TUI (Text User Interface) software offers a user-friendly way to interact with applications directly from the terminal, using text-based menus and interfaces instead of a graphical desktop environment Here are a categorized list of useful TUI software available on Linux 😎👆 #software #o

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Linux netcat command examples

The netcat command lets you read from and write to network connections using TCP or UDP. Its flexibility makes it a must-have for infosec professionals, who use it for tasks such as port scanning, banner grabbing, and setting up reverse shells during penetration tests. Here are useful netstat co

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An infographic titled 'DNS Troubleshooting on Linux' by Dan Nanni, listing commands to diagnose DNS issues. It includes commands to check systemd-resolved status, find DNS server IP, test server reachability (ping, dig), trace routes, and examine DNS-related logs (journalctl, grep).

Linux commands for DNS troubleshooting

DNS issues can stem from a range of sources, network connectivity failures, misconfigured settings, or problems with the DNS servers themselves, all of which can disrupt domain name resolution Here are commands for diagnosing DNS issues on Linux 😎👇 #softwaredeveloper #technology #TechTips

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Salt Creek - Washington

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An infographic titled 'Sysdig Command Examples' defines Sysdig as a Linux tracing tool and lists various commands for monitoring CPU, memory, network, file I/O, and capturing events. It's created by Dan Nanni.

Useful sysdig command examples

The sysdig command is a powerful system-level exploration and troubleshooting tool for Linux. Sysdig can capture and analyze real-time system calls and events, enabling deep visibility into processes, containers, network activity, and file access Here are useful sysdig command examples 😎👆 #te

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Heads up Canada.

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A laptop on a wooden desk with a large monitor in the background, displaying the title "Become an AWS DevOps Engineer" and "3 useful tips" for career advice.

A laptop and a scone with a drink on a wooden table in a cafe, illustrating the first tip: "Build a Strong Foundation in AWS Services" by learning core AWS services and DevOps tools.

A desk setup with a laptop, a colorful water bottle, and a phone, presenting the second tip: "Gain Expertise in DevOps Practices and Tools" like CI/CD pipelines and Infrastructure as Code.

How to become an AWS DevOps Engineer - 3 tips

1. Build a Strong Foundation in AWS Services As an AWS DevOps Engineer, you’ll be responsible for designing, deploying, and managing scalable cloud infrastructure. Key Steps: Learn Core AWS Services: Start with foundational services like EC2, S3, IAM, RDS, VPC, and CloudFormation. Master De

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A digital note-taking app displays notes on various log types for Comptia Security+, including Application, Endpoint, and Network Logs, with some text highlighted. Overlay text reads "Tips for ADHD & studying" and a large checkmark icon is visible.

ADHD & Studying

✨ ADHD-Friendly Study Tips for Staying on Track ✨ 📚 Feeling overwhelmed while studying? Here are some tried-and-true tips to keep your brain focused and your energy balanced! 1️⃣ Set a Timer: Use the Pomodoro technique (25 minutes work, 5 minutes break). It’s a game-changer for ADHD brains! ⏱

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Linux-based cybersecurity tools

Linux provides a vast ecosystem of open-source cybersecurity tools, offering solutions for penetration testing, threat detection, and secure system management Here is a categorized list of cybersecurity tools available on Linux 😎👇 #cybersecurity #infosec #linux

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This image displays a comprehensive list of Tcpdump command examples for network traffic analysis on Linux. It covers various functionalities like capturing, filtering by interface, protocol, IP, port, and subnet, saving to files, displaying detailed packet information, and advanced filtering using TCP flags and VLANs.

Tcpdump command examples

Tcpdump is a powerful command-line tool for capturing and analyzing network traffic on Linux. This tool is essential for cybersecurity pros and sysadmins to troubleshoot issues, inspect protocols, and detect suspicious activity Here are useful tcpdump command examples 😎👆 #technology #softwar

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Open-source firewall OS

A firewall OS turns dedicated hardware into a security gateway, giving you deeper control over network traffic, VPN access, intrusion detection, and custom security policies. Here are popular open-source firewall OS 😎👆 Find high-res pdf ebooks with all my Linux and cybersecurity related info

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An infographic titled 'Security Audits for Linux' by Dan Nanni, outlining key areas for auditing. It covers user management, malware monitoring, file system permissions, scheduled jobs, system configurations, logging, access enforcement, network security, software management, and human behavior.

Security auditing for Linux systems

Security audit for Linux involves a comprehensive review of system components to identify misconfigurations, vulnerabilities, and signs of compromise Here are an itemized list of security audits for Linux systems 😎👆 #linux #softwaredeveloper #TechTips #software Find high-res pdf boo

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Essential router functions

A router works at Layer 3, using destination IP addresses to move traffic between networks, while often adding services like NAT, firewall rules, VPN access, and DHCP. Here is a quick overview of common router functions 😎👆 Find high-res pdf books with all my networking related infographics at

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This image displays a comprehensive list of useful Wireshark filter examples. It includes filters for IP addresses, ports, protocols like TCP, UDP, HTTP, DNS, TLS, DHCP, and packet properties such as length and content. The infographic was created by Dan Nanni from study-notes.org.

Useful Wireshark filter examples

Wireshark filters cut through the noise so you can focus on the traffic that matters: protocols, IPs, ports, or even packet contents. For blue teams, they help track suspicious activity and investigate forensic evidence. For red teams, they help map behavior, spot weak points, and test defenses

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CompTIA Network+ is a certification designed for professionals who are looking to build or further their careers in IT networking. This certification, offered by CompTIA (The Computing Technology Industry Association), provides foundational knowledge in networking concepts, infrastructure, troubles

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This infographic illustrates different types of ping methods, including ICMP, TCP, UDP, ARP, and HTTP. For each type, it shows the request and reply protocols, along with common Linux tools used for each ping method, such as ping, tcping, nping, arping, and httping.

Different types of ping

In networking, ping is known as a way to test network connectivity and measure RTT between devices. While ping probes typically use ICMP, alternative protocols like TCP or UDP can be used as well Here are different types of ping methods and supported #linux tools 😎👆 #software #TechTips #

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An infographic illustrates defensive Linux security tools categorized into areas like firewalls, sandboxing, intrusion detection, monitoring, encryption, and hardening. It lists specific tools such as nftables, Snort, Wazuh, ClamAV, OpenVPN, SELinux, and Nmap, providing a comprehensive overview of Linux defense mechanisms.

Defensive Linux security tools

Modern Linux systems stay secure by stacking overlapping controls—firewalls, sandboxing, hardening, monitoring, and encryption—so a single failure never leads to a full compromise. Each layer reduces blast radius, detects misuse, or protects data, creating a resilient, defense-in-depth security pos

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The image explains how Linux cgroups work, illustrating resource control for CPU, Memory, Storage I/O, and Network. It shows how to create cgroups and attach a process (PID 12345) to cgroup3, detailing its defined resource limits for memory and disk I/O, along with current usage.

How Linux cgroups work

Linux cgroups let you control and isolate how much CPU, memory, and I/O each process or container can use — the foundation of modern container performance management Here is how Linux cgroups work 😎👆 #cybersecurity #devops #softwareengineer #linux #TechTips Find high-res pdf bo

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Understanding your credit score is essential — not optional. 📊 Your credit profile can impact approvals, interest rates, housing, and more. Staying informed helps you stay prepared. I use a service that allows you to: View your credit score Access your full credit report Receive monthly alerts

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A hooded figure types on a keyboard, surrounded by holographic screens displaying global data and code, with the text overlay "How to become Cyber Security" highlighting the article's focus.

A detailed flowchart illustrates the career path to becoming a cybersecurity professional, from high school studies and university degrees to various certifications, entry-level IT jobs, and specialized cybersecurity roles.

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Managed network switch functions

Managed switches provide advanced control, monitoring, and traffic management features, allowing network admins to optimize performance and security—capabilities not available in unmanaged switches Here are a list of common features found in managed network switches 😎👇 #technology Find hi

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An infographic titled 'Free Packet Sniffers by OS' by Dan Nanni. It features logos for tools like Ettercap, Kismet, Wireshark, and Snort, with icons indicating their compatibility with Linux, Windows, and Android operating systems.

Free packet sniffers available on different OS

Packet sniffers capture and inspect network traffic across Layers 2-4, from Ethernet frames and IP packets to TCP/UDP segments and even non-Ethernet traffic like BLE packets. They are essential for troubleshooting, penetration testing, and network defense. Here are free packet-sniffing tools you

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Linux commands for hardware information

Knowing your hardware is essential for effective troubleshooting, system tuning, and performance optimization. That’s why it’s important to be familiar with the OS tools that let you examine different parts of your system’s hardware Here are a list of useful Linux commands for looking up hardwar

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A smiling woman with pink hair in an office cubicle, introducing civil engineering projects she designed, with text overlay 'Projects I Designed As A Civil Engineer'.

A blurred woman with overlaid graphs: a hydrograph and a scattergraph, illustrating flow monitoring surveys in wastewater pipe networks to understand system data.

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Project Studies with Flow Monitoring✨

I design a variety of projects as a civil engineer and one that i do annually is a flow monitoring survey. Flow Monitoring is a study done in wastewater systems to study the flow in the pipe network. This data can be used to understand the system better. This includes flow capacity, inflow/infiltra

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#gettoknowme #gorillatag #fyp #newcontentcreator #linux

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The woke games list makes no sense

The insane woke games list #woke #videogames #wokegaming #gaming

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An infographic titled 'Understanding Linux Signals' illustrates signal sources like kernel-detected faults, system calls, and kernel subsystems. It shows how processes handle signals through default actions, custom handlers, or ignoring them. A table details common signals, their numbers, default actions, and triggering conditions.

Understanding Linux signals

“Signals” provide a lightweight mechanism for the Linux kernel and other processes to asynchronously notify a running process about events such as faults, user interrupts, or system conditions 😎👆 Find high-res pdf ebooks with all my Linux related infographics at https://study-notes.org #linu

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This image displays "Useful Linux Cron Examples," a comprehensive list of cron job schedules. It shows various cron expressions with corresponding commands and descriptions for tasks like running every minute, hourly, daily, weekly, monthly, yearly, at system startup, and more, created by Dan Nanni.

Useful Linux cron examples

Linux cron schedules recurring tasks at defined times using flexible expressions for minutes, hours, days, and months Here are useful cron job examples 😎👇 #software #softwaredeveloper #TechTips #technicalinterview Find a high-res pdf book with all my #linux related infographics fro

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