Scott Lowe

SEPTEMBER 8, 2016

Dmitri Kalintsev is back with another article in a series of articles on using hardware VXLAN tunnel endpoints (VTEPs) with VMware NSX. Here’s a handy post by Dale Coghlan on how to find object IDs for just about anything in a VMware NSX environment. Red Hat Enterprise Linux Atomic Host (how’s that for a mouthful?)

Vmware 60

Vmware Linux Intel Storage 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

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! A browser-based side-channel attack ?

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. Servers/Hardware. Programming.

Open Source 60

Open Source Vmware Disaster Recovery Linux 60

Scott Lowe

JUNE 18, 2017

Colin Lynch shares some details on his journey with VMware NSX (so far). I wouldn’t take this information as gospel, but here’s a breakdown of some of the IPv6 support available in VMware NSX. Sjors Robroek describes his nested NSX-T lab that also includes some virtualized network equipment (virtualized Arista switches).

Windows 60

Windows Vmware Virtualization Linux 60

Scott Lowe

JUNE 18, 2017

Colin Lynch shares some details on his journey with VMware NSX (so far). I wouldn’t take this information as gospel, but here’s a breakdown of some of the IPv6 support available in VMware NSX. Sjors Robroek describes his nested NSX-T lab that also includes some virtualized network equipment (virtualized Arista switches).

Windows 60

Windows Vmware Virtualization Linux 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. From early December 2020, there’s also this reminder about the security updates released by VMware to address a zero-day vulnerability in several products. Linux may be coming to the Apple M1 chip.

Linux 60

Linux Firewall Open Source Vmware 60

Scott Lowe

SEPTEMBER 3, 2013

A discussion of “statefulness” brought me again to Ivan’s post on the spectrum of firewall statefulness. VMware introduced VMware NSX recently at VMworld 2013. x that involves booting on a Linux CD. I am loving the micro-infrastructure series by my VMware vSphere Design co-author, Forbes Guthrie.

Vmware 60

Vmware Data Center Storage Disaster Recovery 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

Cloud Musings

OCTOBER 9, 2018

It effortlessly integrates with any area of the IT infrastructure, be it provisioning virtual machines (VMs) or creating firewall rules. Moreover, Ansible comes in handy with aspects that other tools leave gaps in, such as zero-stop and continuous updates for multitier applications across the infrastructure.

Tools 94

Tools Applications Network Firewall 94

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.

Firewall 60

Firewall Linux Windows Architecture 60

Scott Lowe

AUGUST 16, 2017

Colin Lynch shares some details on his journey with VMware NSX (so far). I wouldn’t take this information as gospel, but here’s a breakdown of some of the IPv6 support available in VMware NSX. Sjors Robroek describes his nested NSX-T lab that also includes some virtualized network equipment (virtualized Arista switches).

Windows 60

Windows Virtualization Devops Vmware 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

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

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

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

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. Servers/Hardware. Nothing this time around. Maybe next time? Cloud Computing/Cloud Management. Operating Systems/Applications. Virtualization.

Vmware 60

Vmware Windows Network Agile 60

Galido

JUNE 28, 2018

SSH: For Linux / Unix and MacOS systems. Detailed reports. What to Monitor. 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.

Network 60

Network LAN VOIP Licensing 60

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. Here’s a nice article on a multi-action security workflow built using VMware NSX, vShield Endpoint, and vCenter Orchestrator. Servers/Hardware. Virtualization.

Open Source 60

Open Source Vmware Network IBM 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. Thinking of virtualizing Linux on Hyper-V? What’s that? You haven’t heard of PowerNSX before? Virtualization.

Linux 60

Linux Devops Open Source Virtualization 60

Scott Lowe

AUGUST 11, 2016

Thinking of using a hardware VTEP (VXLAN Tunnel Endpoint) with VMware NSX? VMware recently announced Open Hardware Management Services (OHMS) , a project intended to help manage servers and switches in a software-defined data center (SDDC) context. The issue lies with VMware Tools, apparently; see Jason’s post for full details.

Vmware 60

Vmware Hardware Storage 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