Dataconomy

SEPTEMBER 12, 2023

The VM is given its own operating system and resources, but they are all contained within the host computer. Server virtualization software creates a layer of abstraction between the physical hardware and the operating system, allowing multiple OSes to run on a single machine ( Image credit ) How does server virtualization work?

Virtualization 78

Virtualization Storage Disaster Recovery Hardware 78

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. Operating Systems/Applications. I am loving the micro-infrastructure series by my VMware vSphere Design co-author, Forbes Guthrie.

Vmware 60

Vmware Data Center Storage Virtualization 60

Scott Lowe

MARCH 17, 2016

I recently came across a couple useful troubleshooting guides, one for Open vSwitch (OVS) and OpenStack Neutron and one for VMware NSX. Russell Pope at Kovarus recently wrote about using security groups to manage the VMware NSX distributed firewall. Operating Systems/Applications. VMware recently GA’d version 6.2

Vmware 60

Vmware Linux Network Open Source 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?” This time, they’re exploiting a weakness that VMware can’t patch: people. Operating Systems/Applications.

Vmware 60

Vmware Firewall Storage Comparison 60

Scott Lowe

MARCH 10, 2015

Anthony Burke (disclaimer: Anthony works for VMware in the NSBU) has a post on how to use Python to automate the bulk creation of firewall rules for use with the VMware NSX distributed firewall. Here’s a post by Grant Orchard on using VMware NSX’s security groups to protect workloads deployed via vCAC (now vRA).

Vmware 60

Vmware Linux Hardware Software Development 60

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. Operating Systems/Applications. Servers/Hardware. It’s about time.)

Vmware 60

Vmware Linux Intel Storage 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. Operating Systems/Applications.

Linux 60

Linux Firewall Open Source Vmware 60

Scott Lowe

OCTOBER 23, 2020

” Speaking of Linux networking…Marek Majkowski of Cloudflare digs deep into conntrack , used for stateful firewalling functionality. Operating Systems/Applications. Patrick Kremer shares some information on using the VMC (VMware Cloud on AWS) API to troubleshoot the connected VPC. Servers/Hardware.

Open Source 60

Open Source Vmware Disaster Recovery Linux 60

Scott Lowe

AUGUST 25, 2015

I think I’ve mentioned this before (it’s really hard to keep track of which articles you’ve included in a Technology Short Take already, so apologies if this is a duplicate), but this article provides a good overview of the VXLAN control plane modes in VMware NSX. Operating Systems/Applications. Keep up the great work, Brent!)

Vmware 60

Vmware Linux Virtualization Windows 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. Operating Systems/Applications. Servers/Hardware. Cloud Computing/Cloud Management.

Vmware 60

Vmware Windows 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. Operating Systems/Applications. Servers/Hardware. Cloud Computing/Cloud Management.

Vmware 60

Vmware Windows Virtualization Linux 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. Operating Systems/Applications. I suppose this is fully expected, given the impact of VMware and hypervisors. That’s cool.

Firewall 60

Firewall Virtualization Network Storage 60

Scott Lowe

FEBRUARY 10, 2015

This time around, the content is a bit heavier on cloud management and applications/operating systems, but still lots of good content all the way around (I hope, anyway). Here’s a nice article on a multi-action security workflow built using VMware NSX, vShield Endpoint, and vCenter Orchestrator. Operating Systems/Applications.

Open Source 60

Open Source Vmware Network IBM 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. Operating Systems/Applications. Servers/Hardware. Nothing this time around. Maybe next time? Cloud Computing/Cloud Management.

Vmware 60

Vmware Windows Network Agile 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. Operating Systems/Applications. Servers/Hardware. Cloud Computing/Cloud Management.

Windows 60

Windows Virtualization Devops Vmware 60

Scott Lowe

JUNE 4, 2013

This post by Ranga Maddipudi shows you how to use App Firewall in conjunction with VXLAN logical networks. App Firewall? Operating Systems/Applications. If you aren’t using vSphere Host Profiles, this write-up on the VMware SMB blog might convince you why you should and show you how to get started.

HP 68

HP Virtualization Hardware Network 68

Scott Lowe

SEPTEMBER 24, 2021

Ivan Pepelnjak shares some links and thoughts on configuring the NSX-T firewall with a CI/CD pipeline built on GitHub Actions and Terraform Cloud. Better patch your vCenter Server instances, as VMware released a security advisory with a long list of CVEs , including one with a severity score of 9.8/10. Operating Systems/Applications.

Open Source 60

Open Source Cloud Network Storage 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. I plan to do a more in-depth write-up on HexaTier soon, after I’ve had a bit of time to do more research.

Linux 60

Linux Network Hardware 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. Operating Systems/Applications. Jeff Geerling has a great article on why he returned his 2016 MacBook Pro with Touch Bar ; it’s definitely worth a read, in my opinion. Have a look at the article for more details.

Linux 60

Linux Network Virtualization IPv6 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. Operating Systems/Applications. This tool exports the DFW configuration and then converts it into Excel format, and is available on GitHub. What’s that? That’s handy.

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. Operating Systems/Applications. Servers/Hardware.

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. Operating Systems/Applications.

Vmware 60

Vmware Storage Firewall Network 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. Operating Systems/Applications.

Linux 60

Linux Firewall Windows Architecture 60