Linux Academy

MARCH 18, 2019

One of the topics you may not often think of as being all that important to security is user accounts on systems. We spend so much time on other things — like managing firewall rules, system patching , analyzing report data, etc. As part of these audits, I would review systems for best practice and general housekeeping.

Security 60

Security Linux Firewall Backup 60

Linux Academy

MAY 20, 2019

This is filtering provided at the network edge by a firewall with rules (ACLs) restricting what internal users are allowed to access. Some firewalls have the ability to filter by an application (layer 7 firewalls), but we’re going to concentrate on standard packet-filtering firewalls and their capabilities.

Security 60

Security Firewall Malware Linux 60

Scott Lowe

JUNE 28, 2021

My first post on WireGuard showed how to configure WireGuard on Linux, both on the client side as well as on the server side. It didn’t exist on my system.) Note that you’ll also need the public key of the server (peer) system to which you’re connecting. The peer system will have/need a similar configuration.

Linux 60

Linux Firewall System Network 60

Linux Academy

JUNE 26, 2019

By training your IT staff to keep your systems secure, you can prevent harmful or costly data breaches. If your organization handles either of these sensitive data types, you must follow guidelines to keep your systems secure. Here are a few steps you can take to meet regulatory compliance in your organization: System Auditing.

Security 60

Security Linux Policies Meeting 60

Linux Academy

FEBRUARY 18, 2019

A vulnerability scan simply scans for security flaws in systems and devices known as vulnerabilities and reports them. Keep in mind, vulnerabilities are not only within server operating systems and applications, but on network devices, IoT devices, workstations, printers, and every other computing device you have.

Security 60

Security Linux Report Firewall 60

Linux Academy

APRIL 19, 2019

With engaging features like live AWS cloud sandboxes and servers, Interactive Diagrams, Hands-On Labs in live cloud environments, customizable flashcards, study groups, direct access to our expert Training Architects, downloadable Course videos, and more, Linux Academy is the #1 cloud training platform that helps you learn AWS by doing.

Training 60

Training Linux Course Devops 60

Scott Lowe

JANUARY 15, 2021

This article by Joshua Fox outlines how and when to use each of the various types of firewalls offered by AWS. Operating Systems/Applications. Ryan Blunden has authored a fairly comprehensive piece on environment variables in Linux and macOS. Linux may be coming to the Apple M1 chip.

Linux 60

Linux Firewall Open Source Vmware 60

Linux Academy

FEBRUARY 5, 2019

These controls could be firewalls, Security Information and Event Monitoring (SIEM) systems, Intrusion Prevention Systems (IPSs), Network Access Control (NAC) systems, etc. They analyze reports and data from these systems to identify what is normal activity and what needs to be investigated.

Information Security 75

Information Security Security Firewall Backup 75

Scott Lowe

APRIL 2, 2021

In this post , Jakub Sitnicki digs way deep into the Linux kernel to uncover the answer to the question, “Why are there no entries in the conntrack table for SYN packets dropped by the firewall?” Linux malware is getting more sophisticated. Operating Systems/Applications. ” Get ready to get nerdy!

Vmware 60

Vmware Firewall Storage Comparison 60

Scott Lowe

OCTOBER 23, 2020

” Ivan Pepelnjak attempts to answer the question, “How much do I need to know about Linux networking?” ” Speaking of Linux networking…Marek Majkowski of Cloudflare digs deep into conntrack , used for stateful firewalling functionality. Operating Systems/Applications. Servers/Hardware.

Open Source 60

Open Source Vmware Disaster Recovery Linux 60

Linux Academy

MARCH 28, 2019

Vulnerabilities at the operating system level may be exploited by rogue container workloads if not hardened. Role binding is further controlled due to its ability to constrain resources within namespaces and lock down the kube-system and default namespaces in production. Implement Pod Security Policy.

Policies 68

Policies Linux Virtualization Security 68

Scott Lowe

FEBRUARY 2, 2017

Vivek Gite over at nixCraft explains how to use ufw (Uncomplicated Firewall) on Ubuntu to limit SSH connections. Operating Systems/Applications. Flatpak is a (relatively) new application packaging/sandboxing mechanism for Linux applications. This looks really promising, IMHO—I’m excited to see it continue to develop.

Linux 60

Linux Network Virtualization IPv6 60

Scott Lowe

MAY 15, 2013

I’ve written before about adding an extra layer of network security to your Macintosh by leveraging the BSD-level ipfw firewall, in addition to the standard GUI firewall and additional third-party firewalls (like Little Snitch ). The robust pf firewall should now be running on your OS X Mountain Lion system.

Firewall 135

Firewall Resources Linux Security 135

ForAllSecure

MARCH 30, 2022

So after elevating a previous to it, we could conduct a more extensive recon and on the Jupyter Notebook environment So after conducting more thorough recon on the Jupyter Notebook environment, we found out that the Jupyter Notebook had some local firewall rules restricting network access. One prevented them from access IMDS.

Firewall 52

Firewall Virtualization Authentication Linux 52

CTOvision

SEPTEMBER 20, 2016

The problem is that threat actors are able to get through the castle gates (firewalls) and once in, are able to evade the castle guards (IPS). The argument is that today with the expansion of n-tier distributed systems and massively parallel architectures, east-west traffic has increased exponentially. Microsegmentation will fix this.

Network 150

Network Security Vmware Virtualization 150

Scott Lowe

SEPTEMBER 11, 2012

” The speaker is Edwin Verplanke, a System Architect with Intel. Verplanke believes that DPDK (Data Plane Development Kit) and virtualization are key to virtualizing workloads that move around lots and lots of packets, such as firewalls, routers, and other similar functions. Is the Linux bridge efficient enough?

Virtualization 131

Virtualization Intel Cloud Data 131

Linux Academy

APRIL 11, 2019

Modern-day defense in depth strategies revolve around this same concept of making an attacker go through multiple layers of defense, with one key difference: we’re applying that to our computer systems. Identity is the process of assigning each individual user and system their own unique name. Router/switch security.

Authentication 60

Authentication Security Disaster Recovery Firewall 60

Scott Lowe

DECEMBER 10, 2015

We all know that security is more than just a host-based firewall, but a host-based firewall can be part of an overall security strategy. This article provides a good introductory overview of Linux iptables commands for configuring host-based firewall rules on your Linux systems.

Firewall 60

Firewall Linux Windows Architecture 60

SecureWorld News

JUNE 12, 2023

The course will revolve around real-world system architectures, the threats and exploits that could result in a data breach , and the defense mechanisms that could be employed to protect a network. With this knowledge, learners will then exploit a live system to identify the risks of web applications that lack the necessary security.

Course 63

Course IBM Security Industry 63

Dataconomy

APRIL 13, 2023

It provides a graphical desktop sharing system that allows users to remotely access and control a computer’s desktop environment, making it ideal for remote technical support, remote collaboration, and other related tasks. RDP is built into Windows and is available on most versions of the operating system.

Virtualization 36

Virtualization Network Linux Windows 36

Galido

JUNE 28, 2018

PRTG monitors all types of systems, devices and applications in your IT infrastructure: SNMP: Ready to use and with customization options. SSH: For Linux / Unix and MacOS systems. Installed will be a proprietary database, web server, report engine, notification system, and other features required for the system to function.

Network 60

Network LAN VOIP Licensing 60

Scott Lowe

MARCH 17, 2016

At DevOps Networking Forum 2016, I had the opportunity to share a presentation on some Linux networking options. Russell Pope at Kovarus recently wrote about using security groups to manage the VMware NSX distributed firewall. Operating Systems/Applications. Have fun reading! Networking. Servers/Hardware.

Vmware 60

Vmware Linux Network Open Source 60

Scott Lowe

JUNE 18, 2017

Anthony Burke gives a little bit of a sneak peek at some functionality from the upcoming v3 release of PowerNSX: searching NSX Distributed Firewall (DFW) rules. Operating Systems/Applications. Here’s a “back to the basics” post with an explanation of what an init system is (uses Fedora as an example). Virtualization.

Windows 60

Windows Vmware Virtualization Linux 60

Scott Lowe

JUNE 18, 2017

Anthony Burke gives a little bit of a sneak peek at some functionality from the upcoming v3 release of PowerNSX: searching NSX Distributed Firewall (DFW) rules. Operating Systems/Applications. Here’s a “back to the basics” post with an explanation of what an init system is (uses Fedora as an example). Virtualization.

Windows 60

Windows Vmware Virtualization Linux 60

Scott Lowe

NOVEMBER 7, 2014

It was good to read this post on Cumulus Linux first impressions by Jeremy Stretch. I’m a fan of Cumulus, but I’m admittedly a Linux guy (see here ) so you might say I’m a bit biased. Jeremy is a “hard-core” networking professional, and so hearing his feedback on Cumulus Linux was, in my opinion, useful.

Vmware 87

Vmware Linux Storage Virtualization 87

Dataconomy

OCTOBER 17, 2023

These individuals use the same techniques as malicious hackers, but instead of using them for nefarious purposes, they use them to identify vulnerabilities and weaknesses in an organization’s systems, networks, and applications. They may steal sensitive data, disrupt systems, or engage in other illicit activities.

Network 45

Network Security Applications System 45

Scott Lowe

MARCH 10, 2015

I highly recommend you read the entire post, but in short the five skills Matt recommends are software skills (which includes configuration management and software development tools like Git ), Linux, deep protocol knowledge, hypervisor and container networking, and IPv6. Operating Systems/Applications. What does this mean?

Vmware 60

Vmware Linux Hardware Software Development 60

Scott Lowe

OCTOBER 27, 2017

specifically, the new container network firewall functionality. When I was using Fedora, I needed some useful information on firewall-cmd , and found this article to be helpful. For what it’s worth, I’ve never tried NetBSD, but I have yet to run into any similar issues with any distribution of Linux I’ve tried.

Firewall 60

Firewall Virtualization Network Storage 60

Scott Lowe

JUNE 4, 2013

This post by Ranga Maddipudi shows you how to use App Firewall in conjunction with VXLAN logical networks. Via Forbes Guthrie on Twitter, I saw this post on how to setup a CA on Linux and use it in a Windows environment. App Firewall? Operating Systems/Applications. Venky explains it in this post.

HP 113

HP Virtualization Hardware Network 113

Scott Lowe

MARCH 2, 2017

Tony Sangha took PowerNSX (a set of PowerShell cmdlets for interacting with NSX) and created a tool to help document the NSX Distributed Firewall configuration. Operating Systems/Applications. Here’s a walkthrough to install Arch Linux on VirtualBox. Thinking of virtualizing Linux on Hyper-V? What’s that? That’s handy.

Linux 60

Linux Devops Open Source Virtualization 60

Scott Lowe

JUNE 29, 2016

In the event you accidentally locked yourself out of vCenter using NSX’s distributed firewall, this post by Roie Ben Haim provides a workaround for getting yourself out of this pickle. Operating Systems/Applications. This is a highly technical article on scheduling in the Linux kernel , but it’s well worth reading.

Linux 60

Linux Network Hardware Vmware 60

Scott Lowe

AUGUST 16, 2017

Anthony Burke gives a little bit of a sneak peek at some functionality from the upcoming v3 release of PowerNSX: searching NSX Distributed Firewall (DFW) rules. Operating Systems/Applications. This is a space that’s going to see some pretty major changes over the next few years, in my humble opinion. Virtualization.

Windows 60

Windows Virtualization Devops Vmware 60

Scott Lowe

SEPTEMBER 8, 2016

The use of VMware NSX for microsegmentation is a really popular use case, and so the topic of scripting distributed firewall (DFW) rules often comes up. Operating Systems/Applications. Red Hat Enterprise Linux Atomic Host (how’s that for a mouthful?) Then again, what do I know? recently announced version 7.2.6,

Vmware 60

Vmware Linux Intel Storage 60

Scott Lowe

MARCH 8, 2015

Upon hearing the news that Red Hat had released the Atomic Host variant of Red Hat Enterprise Linux , I decided that it would be a good idea for me to take a look at the CentOS flavor of the Atomic Host variant. I’ve spent most of my time with Ubuntu (for general purpose Linux use cases) and CoreOS (for container-optimized use cases).

Linux 60

Linux Cloud Firewall Vmware 60

Scott Lowe

AUGUST 25, 2015

In this post, I’ve gathered links to posts about networking, virtualization, Docker, containers, Linux, configuration management, and all kinds of other cool stuff. Roie Ben Haim, who works in professional services at VMware, has a deep dive on the NSX distributed firewall (DFW). Operating Systems/Applications. Networking.

Vmware 60

Vmware Linux Virtualization Tools 60

Cloud Musings

OCTOBER 9, 2018

This is where configuration management (CM) comes into play, its purpose being to maintain the integrity of the product or system throughout its lifecycle while also making the deployment process controllable and repeatable in order to ensure higher quality.

Tools 94

Tools Applications Network Firewall 94

Scott Lowe

JUNE 4, 2013

This post by Ranga Maddipudi shows you how to use App Firewall in conjunction with VXLAN logical networks. Via Forbes Guthrie on Twitter, I saw this post on how to setup a CA on Linux and use it in a Windows environment. App Firewall? Operating Systems/Applications. Venky explains it in this post.

HP 68

HP Virtualization Hardware Network 68