Scott Lowe

APRIL 8, 2013

Greg Ferro examines a potential SDN use case (an OpenFlow use case) in the form of enterprise firewall migrations. Operating Systems/Applications. If you’re a real storage geek (or if you’re not but are having trouble sleeping), check out this USENIX presentation on erasure coding in Windows Azure storage.

Storage 108

Storage Vmware WAN Virtualization 108

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

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

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

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. RegEx tester. Enough said.

Windows 60

Windows Virtualization Devops Vmware 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 enjoyed Adam Leventhal’s evaluation of APFS , the new file system announced at the most recent Apple WWDC.

Linux 60

Linux Network Hardware Vmware 60

Dataconomy

SEPTEMBER 12, 2023

The VM is given its own operating system and resources, but they are all contained within the host computer. Each virtualized OS has its own set of resources, such as CPU, memory, and storage, but they share the same physical hardware. Both virtual servers can access the same SATA hard drive for storage.

Virtualization 78

Virtualization Storage Disaster Recovery Hardware 78

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. Alan Renouf shows you how to retrieve NVMe storage device details using PowerCLI. What’s that? That’s handy. Virtualization.

Linux 60

Linux Devops Open Source Virtualization 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. The new filesystem is called LCFS, or Layer Cloning File System, and you can get more details on LCFS via its GitHub repository. Have a look at the article for more details.

Linux 60

Linux Network Virtualization IPv6 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

MAY 3, 2013

I try to keep the information linked to data center technologies like networking, storage, virtualization, and the like, but occasionally other items slip through. Ranga Maddipudi ( @vCloudNetSec on Twitter) has put together two blog posts on vCloud Networking and Security’s App Firewall ( part 1 and part 2 ). Networking.

Vmware 106

Vmware Storage Virtualization HP 106

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 107

Open Source Cloud Network Storage 107

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. DVM looks handy.

Vmware 60

Vmware Linux Intel Storage 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

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 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 105

HP Virtualization Hardware Network 105

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 Tools 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

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 60

HP Virtualization Hardware 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.

Firewall 60

Firewall Windows Linux Architecture 60