Scott Lowe

SEPTEMBER 6, 2024

Servers/Hardware I thought this write-up of Andy Bechtolsheim’s keynote at Hot Interconnects 2024 was an interesting summary of where we could see hardware development go in the next 4 years. Gabriella Gonzalez shares some tricks for jailbreaking hosts behind “secure” enterprise firewalls.

Linux 60

Linux Storage Network Hardware 60

Linux Academy

MAY 5, 2019

As many of you know, most firewalls today come with a default rule set permitting all outbound traffic to flow freely. You put the firewall in place, and traffic flows outbound unimpeded. This year number five is is Secure configurations for hardware and software on devices , and number 11 is Secure configuration for network devices.

Security 68

Security Firewall Backup Malware 68

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

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

JANUARY 15, 2021

This article by Joshua Fox outlines how and when to use each of the various types of firewalls offered by AWS. Servers/Hardware. Ryan Blunden has authored a fairly comprehensive piece on environment variables in Linux and macOS. Linux may be coming to the Apple M1 chip. Thinking of buying an M1-powered Mac?

Linux 60

Linux Firewall Open Source Vmware 60

Scott Lowe

JUNE 18, 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. I wouldn’t take this information as gospel, but here’s a breakdown of some of the IPv6 support available in VMware NSX. Virtualization.

Windows 60

Windows Vmware Virtualization Linux 60

Scott Lowe

JUNE 18, 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. I wouldn’t take this information as gospel, but here’s a breakdown of some of the IPv6 support available in VMware NSX. Virtualization.

Windows 60

Windows Vmware Virtualization Linux 60

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. Have fun reading! Networking. Read more about it here.

Vmware 60

Vmware Linux Network Open Source 60

Linux Academy

MAY 5, 2019

As many of you know, most firewalls today come with a default rule set permitting all outbound traffic to flow freely. You put the firewall in place, and traffic flows outbound unimpeded. This year number five is is Secure configurations for hardware and software on devices , and number 11 is Secure configuration for network devices.

Security 60

Security Firewall Backup Malware 60

Linux Academy

MAY 6, 2019

As many of you know, most firewalls today come with a default rule set permitting all outbound traffic to flow freely. You put the firewall in place, and traffic flows outbound unimpeded. This year number five is is Secure configurations for hardware and software on devices , and number 11 is Secure configuration for network devices.

Security 60

Security Firewall Backup Malware 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. 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

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

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. What to Monitor. Windows and WMI performance counters. Maintenance is included in the purchase price.

Network 60

Network LAN VOIP Licensing 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

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

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. I wouldn’t take this information as gospel, but here’s a breakdown of some of the IPv6 support available in VMware NSX.

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. If you’re not familiar with OVN, this is a good post with which to start. Perhaps I should remove this section?

Firewall 60

Firewall Virtualization Network 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. 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 Windows 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?

Vmware 60

Vmware Windows Network Agile 60

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

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.

Open Source 60

Open Source Vmware Network IBM 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. x that involves booting on a Linux CD. Art Fewell takes a deeper look at the increasingly important role of the virtual switch. Forgot the root password to your ESXi 5.x

Vmware 60

Vmware Data Center Storage Virtualization 60

ForAllSecure

AUGUST 10, 2021

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. Leale: they're way too slow to fire an engine. It has to be controlled by the vendor.

Automotive 52

Automotive Operating Systems System Tools 52

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 Linux Firewall Architecture 60

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. I was living in Alameda off of the Navy base there. Come sit next to me.

Open Source 40

Open Source Media Social Hotels 40

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.

Open Source 60

Open Source Vmware Disaster Recovery Linux 60

Scott Lowe

AUGUST 11, 2016

In this post you’ll find a collection of links to articles discussing the major data center technologies—networking, hardware, security, cloud computing, applications, virtualization…you name it! (If Thinking of using a hardware VTEP (VXLAN Tunnel Endpoint) with VMware NSX? Servers/Hardware. Welcome to Technology Short Take #70!

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

Vmware 60

Vmware Storage Firewall Network 60