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

Linux Academy

DECEMBER 3, 2019

There are, of course, many more announcements from the keynote and Linux Academy will continue to blog throughout the week, but those were a few of the exciting announcements that caught my eye from the keynote. Andy also announced Amazon S3 Access Points , a new service that helps firewall your S3 buckets within private networks.

Linux 17

Linux Course Web Services Storage 17

Linux Academy

NOVEMBER 6, 2019

This November at Linux Academy, we have loads of new content coming your way! To all of our learners who may know someone who wants to learn more about the cloud or Linux, but they have been on the fence about signing up for a free community edition account, then tell them that right now is a great time for them to sign up!

Linux 16

Linux Systems Administration Cloud Google 16

Linux Academy

APRIL 9, 2019

From new courses to new labs, we have a ton of exciting new Google Cloud updates at Linux Academy ( where you can get the most Google Cloud training on this planet! ). Practice what you’re learning by spinning up live environments within Linux Academy! Creating Firewall Rules on a Google Cloud VPC Network.

Training 60

Training Google Cloud Linux 60

Scott Lowe

JUNE 20, 2016

Plumgrid is one of the primary commercial sponsors behind the IO Visor project , a Linux Foundation project, which leverages the extended Berkeley Packet Filter (eBPF) subsystem in the Linux kernel. StorageOS aims squarely at providing persistent storage for Docker containers, primarily focusing on databases in Docker containers.

Meeting 60

Meeting Linux Storage Network 60

Scott Lowe

SEPTEMBER 6, 2024

Gabriella Gonzalez shares some tricks for jailbreaking hosts behind “secure” enterprise firewalls. Operating Systems/Applications I started using eza on my desktop systems (both macOS and Linux) a while ago, but it’s nice to see it getting more attention. Plausible deniability in storage. Well worth a read.

Linux 60

Linux Storage Network Hardware 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? Venky explains it in this post. Jason Edelman is on a roll with a couple of great blog posts.

HP 68

HP Virtualization Hardware Network 68

Fountainhead

MAY 5, 2009

Infrastructure Orchestration abstracts and defines/configures the infrastructure world (I/O, NIC cards, HBA cards, storage connectivity, LANs, switches, etc.). So, not only can you define a virtual server instantly, you can define a *physical* server (maybe a virtual host, or a physical machine) down to I/O, NICs, Storage and Network.

Data Center 100

Data Center Virtualization Disaster Recovery Storage 100

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. ” Get ready to get nerdy! Servers/Hardware. Aye aye, Popeye!

Vmware 60

Vmware Firewall Storage Comparison 60

Scott Lowe

FEBRUARY 2, 2017

Vivek Gite over at nixCraft explains how to use ufw (Uncomplicated Firewall) on Ubuntu to limit SSH connections. Flatpak is a (relatively) new application packaging/sandboxing mechanism for Linux applications. Who would have thought that one day you’d refer to a Microsoft web site for instructions on configuring something in Linux?

Linux 60

Linux Network Virtualization IPv6 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. Pradipta Kumar Banerjee has an article on using local storage for instances in OpenStack. Red Hat Enterprise Linux Atomic Host (how’s that for a mouthful?) DVM looks handy.

Vmware 60

Vmware Linux Intel Storage 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. I knew Microsoft was cozying up to Linux, but I honestly didn’t expect they would port SQL Server to Linux.

Vmware 60

Vmware Linux Network Open Source 60

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. Here’s a walkthrough to install Arch Linux on VirtualBox. Alan Renouf shows you how to retrieve NVMe storage device details using PowerCLI. What’s that? Virtualization.

Linux 60

Linux Devops Open Source Virtualization 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 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. Aside from a Windows VM I maintain for the occasional thing I can’t do effectively on Linux or OS X, I haven’t worked with Windows in any significant capacity in quite a while.

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. Aside from a Windows VM I maintain for the occasional thing I can’t do effectively on Linux or OS X, I haven’t worked with Windows in any significant capacity in quite a while.

Windows 60

Windows Vmware Virtualization Linux 60

Cloud Musings

OCTOBER 9, 2018

With over 1300 modules, Ansible simplifies several aspects of IT infrastructure, including web, database, network, cloud, cluster, monitoring, and storage. It effortlessly integrates with any area of the IT infrastructure, be it provisioning virtual machines (VMs) or creating firewall rules.

Tools 94

Tools Applications Network Firewall 94

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. NixOS seems to be an interesting re-think of a Linux distribution.

Vmware 60

Vmware Linux Hardware Software Development 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. This is a highly technical article on scheduling in the Linux kernel , but it’s well worth reading. Cloud Computing/Cloud Management. Virtualization.

Linux 60

Linux Network Hardware Vmware 60

Scott Lowe

SEPTEMBER 3, 2013

A discussion of “statefulness” brought me again to Ivan’s post on the spectrum of firewall statefulness. Chris Evans takes a took at ScaleIO , recently acquired by EMC, and speculates on where ScaleIO fits into the EMC family of products relative to the evolution of storage in the data center.

Vmware 60

Vmware Data Center Storage Virtualization 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). Welcome to Technology Short Take #53. Networking.

Vmware 60

Vmware Linux Virtualization Windows 60

Scott Lowe

MAY 12, 2016

In the event you’re interested in an idea of how much latency the use of in-kernel hypervisor firewalling (such as that offered by VMware NSX) adds, have a look at this article by Sean Howard. Greg Schulz—who normally tends to focus on storage-related topics—has a post providing an overview of the Ubuntu 16.04 “Xenial Xerus” release.

Vmware 60

Vmware Windows Network Agile 60

Galido

JUNE 28, 2018

SSH: For Linux / Unix and MacOS systems. PRTG monitors all types of systems, devices and applications in your IT infrastructure: SNMP: Ready to use and with customization options. Windows and WMI performance counters. Flow and Packet analyzer. HTTP requests. Any REST API that returns XML or JSON. Ping, SQL and many more.

Network 60

Network LAN VOIP Licensing 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. Here’s a quick post on using Fedora 25 as a hypervisor, leveraging KVM (part of the Linux kernel, as you probably already know) and a tool called Virtual Machine Manager.

Windows 60

Windows Virtualization Devops Vmware 60

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. Why might that be the case?

Firewall 52

Firewall Virtualization Authentication Linux 52

Scott Lowe

FEBRUARY 10, 2015

The “gotcha” is that these software stacks haven’t been written yet, so the idea of repurposing hardware from switch to firewall to load balancer is still a bit of a unicorn. First, here’s a workaround to the fact that vCA doesn’t (yet) do cloud-init, which makes injecting SSH keys into Linux instances a bit difficult.

Open Source 60

Open Source Vmware Network IBM 60

Dataconomy

APRIL 13, 2023

This feature is particularly useful in environments where only HTTP traffic is allowed, such as in a web proxy or firewall. The VNC protocol is designed to be platform-independent, meaning that it can be used to access and control computers running on any operating system, including Windows, macOS, Linux, and others.

Virtualization 36

Virtualization Network Linux Windows 36

CTOvision

FEBRUARY 4, 2015

Dr. Daniel Duffy is head of the NASA Center for Climate Simulation (NCCS, Code 606.2), which provides high performance computing, storage, networking, and data systems designed to meet the specialized needs of the Earth science modeling communities. High Performance Computing Lead, NASA Center for Climate Simulation (NCCS). Eddie Garcia.

Fractional CTO 150

Fractional CTO CTO CTO Hire Big Data 150

CTOvision

JANUARY 18, 2015

Dr. Daniel Duffy is head of the NASA Center for Climate Simulation (NCCS, Code 606.2), which provides high performance computing, storage, networking, and data systems designed to meet the specialized needs of the Earth science modeling communities. High Performance Computing Lead, NASA Center for Climate Simulation (NCCS). Eddie Garcia.

Program Management 150

Program Management Fractional CTO CTO Programming 150

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. Cloud Computing/Cloud Management.

Linux 60

Linux Windows Firewall Architecture 60

Scott Lowe

AUGUST 11, 2016

What will happen when you combine GPUs and persistent storage? It seems to me that the ever-increasing application of persistent storage technologies in lots of difference places is going to change lots and lots of things. Is the era of the storage admin over ? Marco van Baggum describes his experience in working with NSX 6.2.3

Vmware 60

Vmware Hardware Storage Linux 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. Servers/Hardware. Programming.

Open Source 60

Open Source Vmware Disaster Recovery Linux 60

Scott Lowe

APRIL 24, 2015

This is kind of cool, and (in my humble opinion) a sign of changing times: Juniper has Vagrant boxes as well as a Vagrant plugin for working with vSRX (virtual firewall) VMs (via this article from Matt Oswalt). Here are some general guidelines for configuring syslog forwarding on a Cisco ASA firewall. Servers/Hardware. Virtualization.

Vmware 60

Vmware Storage Firewall Network 60