Scott Lowe

SEPTEMBER 11, 2012

Verplanke believes that DPDK (Data Plane Development Kit) and virtualization are key to virtualizing workloads that move around lots and lots of packets, such as firewalls, routers, and other similar functions. Devices first started as tightly-coupled hardware and software solutions. Is the Linux bridge efficient enough?

Virtualization 113

Virtualization Intel Cloud Data 113

Galido

JUNE 28, 2018

SSH: For Linux / Unix and MacOS systems. As devices are discovered, probes will also detect the services and hardware it can monitor. Reducing the costs by buying only the hardware you need. Detailed reports. What to Monitor. Windows and WMI performance counters. Maintenance is included in the purchase price.

Network 60

Network LAN VOIP Licensing 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. Servers/Hardware. Cloud Computing/Cloud Management. Virtualization. Here’s a great way.

Windows 60

Windows Virtualization Devops Vmware 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. This is a highly technical article on scheduling in the Linux kernel , but it’s well worth reading. Virtualization.

Linux 60

Linux Network Hardware Vmware 60

Scott Lowe

FEBRUARY 2, 2017

Servers/Hardware. 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. John Kozej has a write-up on an NSX logical switch packet walk.

Linux 60

Linux Network Virtualization IPv6 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. I suppose this is fully expected, given the impact of VMware and hypervisors. Perhaps I should remove this section?

Firewall 60

Firewall Virtualization Network Storage 60

Scott Lowe

MAY 12, 2016

Servers/Hardware. 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. It’s a good post, well worth reading (in my opinion). Nothing this time around. Maybe next time? Virtualization.

Vmware 60

Vmware Windows Network Agile 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. Servers/Hardware. x that involves booting on a Linux CD. This looks interesting. Security. Cloud Computing/Cloud Management.

Vmware 60

Vmware Data Center Storage Disaster Recovery 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

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. Here’s a walkthrough to install Arch Linux on VirtualBox. Thinking of virtualizing Linux on Hyper-V? What’s that? See here.). Virtualization.

Linux 60

Linux Devops Open Source Virtualization 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 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. ” Get ready to get nerdy! Aye aye, Popeye!

Vmware 60

Vmware Firewall Storage Comparison 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. Servers/Hardware. Networking. Then again, what do I know?

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 ). Some good advice here on scaling/sizing VXLAN in VMware deployments (as well as some useful background information to help explain the advice). Servers/Hardware. In vSphere 5.1,

Vmware 109

Vmware Storage Virtualization HP 109

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

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). Networking.

Vmware 60

Vmware Linux Virtualization Tools 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

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

FEBRUARY 10, 2015

Tom’s key point is that disaggregating software from hardware—which is kind of a given if you’re buying whitebox networking gear—gives you the (potential) flexibility to repurpose network gear based on the software running on it. Servers/Hardware. However, it’s at least possible with whitebox networking gear. Virtualization.

Open Source 60

Open Source Vmware Network IBM 60