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 69

Vmware Linux Storage Virtualization 69

Scott Lowe

MARCH 17, 2016

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

Vmware 60

Vmware Linux Network Open Source 60

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. Servers/Hardware. What does this mean?

Vmware 60

Vmware Linux Hardware Software Development 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. Servers/Hardware. Operating Systems/Applications. Here’s a walkthrough to install Arch Linux on VirtualBox. Thinking of virtualizing Linux on Hyper-V?

Linux 60

Linux Devops Open Source Virtualization 60

Scott Lowe

AUGUST 16, 2017

Servers/Hardware. Here’s an interesting article on the role that virtualization is playing in the network functions virtualization (NFV) space now that ARM hardware is growing increasingly powerful. Operating Systems/Applications. Cloud Computing/Cloud Management. Virtualization. Here’s a great way.

Windows 60

Windows Virtualization Devops Vmware 60

Scott Lowe

OCTOBER 27, 2017

Servers/Hardware. 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. If you’re not familiar with OVN, this is a good post with which to start.

Firewall 60

Firewall Virtualization Network Storage 60

Scott Lowe

JUNE 29, 2016

If you like geeking out over the hardware side of networking, you may find this Ars Technica article on the physical infrastructure of the global Internet to be an interesting read. (I Servers/Hardware. Operating Systems/Applications. Patrick Ogenstad outlines what’s involved with managing Cisco IOS upgrades with Ansible.

Linux 60

Linux Network Hardware Vmware 60

Scott Lowe

MAY 12, 2016

I recently spoke at Interop 2016 in Las Vegas, and while I was there I scribbled down some notes pertaining to how decomposing applications into microservices-based architectures was similar in some respects to decomposing networks into an overlay network and an underlay (physical) network. Servers/Hardware. Networking.

Vmware 60

Vmware Windows Network Agile 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). Servers/Hardware. Here are some general guidelines for configuring syslog forwarding on a Cisco ASA firewall.

Vmware 60

Vmware Storage Firewall Network 60

Scott Lowe

SEPTEMBER 3, 2013

A discussion of “statefulness” brought me again to Ivan’s post on the spectrum of firewall statefulness. Servers/Hardware. Operating Systems/Applications. x that involves booting on a Linux CD. Art Fewell takes a deeper look at the increasingly important role of the virtual switch. Security.

Vmware 60

Vmware Data Center Storage Disaster Recovery 60

Scott Lowe

OCTOBER 23, 2020

I think a fair number of folks may not be aware that the Nginx ingress controller for Kubernetes—both the community version and the Nginx-maintained open source version—do suffer from timeouts and errors resulting from changes in the back-end application’s list of endpoints (think pods being added or removed).

Open Source 60

Open Source Vmware Disaster Recovery Linux 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?” Servers/Hardware. Linux malware is getting more sophisticated. Operating Systems/Applications.

Vmware 60

Vmware Firewall Storage Comparison 60

Scott Lowe

JUNE 4, 2013

This post by Ranga Maddipudi shows you how to use App Firewall in conjunction with VXLAN logical networks. Next, Jason dives a bit deeper on the relationship between network overlays and hardware , and shares his thoughts on where it does—and doesn’t—make sense to have hardware terminating overlay tunnels.

HP 106

HP Virtualization Hardware Network 106

Scott Lowe

DECEMBER 10, 2015

Servers/Hardware. 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.

Windows 60

Windows Firewall Linux Architecture 60

Scott Lowe

JUNE 4, 2013

This post by Ranga Maddipudi shows you how to use App Firewall in conjunction with VXLAN logical networks. Next, Jason dives a bit deeper on the relationship between network overlays and hardware , and shares his thoughts on where it does—and doesn’t—make sense to have hardware terminating overlay tunnels.

HP 61

HP Virtualization Hardware Network 61

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. Servers/Hardware. 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. Networking.

Vmware 60

Vmware Linux Intel Storage 60

Scott Lowe

MAY 3, 2013

Ranga Maddipudi ( @vCloudNetSec on Twitter) has put together two blog posts on vCloud Networking and Security’s App Firewall ( part 1 and part 2 ). Servers/Hardware. Linux distributions that offer ARM support, though—like Ubuntu, RHEL, and SuSE—are supported, however. Operating Systems/Applications.

Vmware 109

Vmware Storage Virtualization HP 109

Linux Academy

APRIL 11, 2019

Think about all the controls we have in place on our networks today: firewalls, authentication systems, intrusion detection and prevention systems (network- and host-based), router and switch security, operating system security, data encryption — the list goes on and on. It’s in this domain that we lump the following: Firewalls.

Authentication 60

Authentication Security Disaster Recovery Firewall 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. Servers/Hardware. Roie Ben Haim, who works in professional services at VMware, has a deep dive on the NSX distributed firewall (DFW). Operating Systems/Applications.

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). Servers/Hardware. 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

ForAllSecure

AUGUST 10, 2021

So for bandwidth intensive applications, Ethernet really solves that problem. You can't run an operating system if you're running like even real time Linux, you probably couldn't do a very good job of activating the cylinders on your, on your engine controller so even an operating system, it has limitations and so why even bother.

Automotive 52

Automotive Operating Systems System Tools 52

ForAllSecure

MAY 2, 2023

So he invites me to go to a book that, you know, one of those first black hats and Doug Song was set doing his thing on checkpoint firewall bypass, and I'm sitting there, and a guy named Jeff Nathan. than trying to find a vulnerability in an application from a high level perspective, right. Come sit next to me.

Open Source 40

Open Source Media Social Hotels 40