CIO Business Intelligence

MAY 23, 2023

Firewalls have come a long way from their humble beginnings of assessing network traffic based on appearance alone. Here are six predictions for the future of the firewall. For example, a typical NGFW now may be equipped with firewalling, SD-WAN, a Wi-Fi controller for SD-Branch, an Ethernet controller, and zero-trust functionality.

Firewall 98

Firewall Network WAN Security 98

Linux Academy

MARCH 28, 2019

As organizations increase their use of Kubernetes in public and Hybrid cloud architectures, it is important not to let a maiden voyage end like a Titanic catastrophe. Vulnerabilities at the operating system level may be exploited by rogue container workloads if not hardened.

Policies 68

Policies Linux Security Virtualization 68

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. Much wailing and gnashing of teeth occurred as a result of the discovery of the KRACK attack.

Firewall 60

Firewall Virtualization Network Storage 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 According to this article , “It is hard to overstate what a sea change” this sort of architecture will create. Networking.

Vmware 60

Vmware Hardware Storage Linux 60

Scott Lowe

MARCH 17, 2016

Russell Pope at Kovarus recently wrote about using security groups to manage the VMware NSX distributed firewall. Marcos Hernandez (a colleague on the NSX team at VMware) recently pointed out this Heat template for a multi-tier application with dynamic routing (via Quagga). Operating Systems/Applications.

Vmware 60

Vmware Linux Network Open Source 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?

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. Flatpak is a (relatively) new application packaging/sandboxing mechanism for Linux applications. Not sure what a bastion host is? Read this post.)

Linux 60

Linux Network Virtualization IPv6 60

Scott Lowe

SEPTEMBER 3, 2013

A discussion of “statefulness” brought me again to Ivan’s post on the spectrum of firewall statefulness. Kenneth Hui, formerly of VCE and now with Rackspace, does a great job of explaining how VMware vSphere fits into the OpenStack Nova architecture in this blog post. Operating Systems/Applications.

Vmware 60

Vmware Data Center Storage Disaster Recovery 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. Operating Systems/Applications.

Vmware 60

Vmware Windows Network Agile 60

Dataconomy

MARCH 28, 2023

An IoT ( Internet of Things ) ecosystem refers to a network of interconnected devices, sensors, and software applications that work together to collect, analyze, and share data. Data layer:  This layer includes the data storage and management systems that store and process the data generated by the IoT system.

Data 28

Data Storage Security Network 28

Dataconomy

MARCH 28, 2023

An IoT ( Internet of Things ) ecosystem refers to a network of interconnected devices, sensors, and software applications that work together to collect, analyze, and share data. Data layer:  This layer includes the data storage and management systems that store and process the data generated by the IoT system.

Data 28

Data Storage Security Network 28

Dataconomy

SEPTEMBER 21, 2023

Online Certificate Status Protocol uses a client-server architecture, with the client sending a request to the server to check the certificate status ( Image credit ) To ensure the validity of the response, the client verifies that the digital signature on the response is valid. This can slow down the overall performance of the application.

Security 41

Security Authentication Internet Resources 41

CIO Business Intelligence

NOVEMBER 2, 2023

The principle of least privilege (PoLP) is an information security concept that maintains that a user or entity should only have access to the specific data, resources, and applications needed to complete a required task. But this opened the applications for attacks that could easily subvert the entire OS. Within a ZTNA 2.0

Backup 128

Backup Information Security Security Operating Systems 128

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. Operating Systems/Applications. I don’t think I’ve mentioned this before; if I have, please forgive me. Servers/Hardware.

Vmware 60

Vmware Linux Hardware Software Development 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. Angel Villar Garea also has a post on the same topic. Cloud Computing/Cloud Management.

Linux 60

Linux Network Hardware Vmware 60

Dataconomy

SEPTEMBER 12, 2023

Server virtualization can do the trick for you if you also struggle to scale your applications to meet growing demands without breaking the bank. With traditional physical servers, adding new applications or services often requires purchasing and installing additional hardware.

Virtualization 78

Virtualization Storage Hardware Disaster Recovery 78

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.

Windows 60

Windows Firewall Linux Architecture 60

ForAllSecure

JUNE 21, 2022

Living off the Land (LoL) is an attack where files already on your machine, ie your operating system, are used against you. So I started thinking about other ways to hide messages or even how to get malware onto a system without it being detected. Like all the unused files within your operating system?

Operating Systems 52

Operating Systems System Microsoft Examples 52

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. Venky explains it in this post. Venky also has a great write-up on how the VTEP (VXLAN Tunnel End Point) learns and creates the forwarding table.

HP 106

HP Virtualization Hardware Network 106

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. Venky explains it in this post. Venky also has a great write-up on how the VTEP (VXLAN Tunnel End Point) learns and creates the forwarding table.

HP 61

HP Virtualization Hardware Network 61