Network World

NOVEMBER 15, 2024

“It allows users to navigate the filesystem, upload new files to the machine, as well as regular file operations like copying, moving and renaming files.” Firewalld is a commonly used Linux firewall service while notables provides filtering and classification of network packets.

Linux 109

Linux Network Enterprise Enterprise 109

Scott Lowe

AUGUST 6, 2021

I saw this blog post about Curiefense , an open source Envoy extension to add WAF (web application firewall) functionality to Envoy. Via Alex Mitelman’s Systems Design Weekly 015 , I was pointed to this AWS article on multi-site active-active architectures. Operating Systems/Applications.

Open Source 105

Open Source Load Balancer WAN Architecture 105

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 113

HP Virtualization Hardware Network 113

CIO Business Intelligence

NOVEMBER 2, 2023

So, in a nutshell, least privilege says that every object in a system – whether a user, a process, or an application – must be able to access only the information and resources that it needs, and no more. It is essential to create standard, secure builds for your operating systems that eliminate unnecessary bloatware, plug-ins, and protocols.

Backup 128

Backup Information Security Security Operating Systems 128

SecureWorld News

DECEMBER 17, 2024

At a minimum, these systems should be firewalled off from public addressing, Ellis stresses. Instead of using secure solutions like VPNs or Zero Trust architectures, many HMIs were directly connected to the internet, exposing them to attackers. Why Are HMIs Being Exposed?

Internet 59

Internet System Authentication Security 59

Dataconomy

SEPTEMBER 12, 2023

The VM is given its own operating system and resources, but they are all contained within the host computer. Server virtualization software creates a layer of abstraction between the physical hardware and the operating system, allowing multiple OSes to run on a single machine ( Image credit ) How does server virtualization work?

Virtualization 78

Virtualization Storage Disaster Recovery Hardware 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.

Firewall 60

Firewall Linux Windows Architecture 60

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. The NIST and DHS have teamed up on some efforts to secure BGP; more information is available in this article.

Firewall 60

Firewall Virtualization Network Storage 60

Scott Lowe

AUGUST 6, 2021

I saw this blog post about Curiefense , an open source Envoy extension to add WAF (web application firewall) functionality to Envoy. Via Alex Mitelman’s Systems Design Weekly 015 , I was pointed to this AWS article on multi-site active-active architectures. Operating Systems/Applications.

Open Source 60

Open Source Load Balancer WAN Architecture 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

MARCH 17, 2016

Russell Pope at Kovarus recently wrote about using security groups to manage the VMware NSX distributed firewall. Operating Systems/Applications. Iwan Rahabok has a couple of posts (these are slightly older) that discuss sample architectures for a VMware SDDC deployment. Servers/Hardware. Career/Soft Skills.

Vmware 60

Vmware Linux Network Open Source 60

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 Virtualization Security 68

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 68

HP Virtualization Hardware Network 68

SecureWorld News

JUNE 12, 2023

The course will revolve around real-world system architectures, the threats and exploits that could result in a data breach , and the defense mechanisms that could be employed to protect a network. With this knowledge, learners will then exploit a live system to identify the risks of web applications that lack the necessary security.

Course 65

Course IBM Security Industry 65

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

SecureWorld News

SEPTEMBER 27, 2023

This ranges from understanding cryptography to having insights into operating system architecture. In such cases, your response might simply involve updating blacklists on the firewall using data from the TIP. And if a threat actor employs social engineering , the analyst might even need a basic grasp of psychology.

Artificial Intelligence 93

Artificial Intelligence Malware Knowledge Base Report 93

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 post is a bit geeky but quite informative, and worth reading if SSH bastion hosts are a key part of your architecture. Have a look at the article for more details.

Linux 60

Linux Network Virtualization IPv6 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

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 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.

Security 41

Security Authentication Internet Resources 41

Dataconomy

MARCH 28, 2023

There are several layers to an IoT ecosystem architecture, including: Device layer:  This layer includes the sensors and other devices that collect data and interact with the physical environment. Software components:  IoT software components include applications, operating systems, and analytics tools.

Data 28

Data Storage Security Network 28

Dataconomy

MARCH 28, 2023

There are several layers to an IoT ecosystem architecture, including: Device layer:  This layer includes the sensors and other devices that collect data and interact with the physical environment. Software components:  IoT software components include applications, operating systems, and analytics tools.

Data 28

Data Storage Security Network 28

Scott Lowe

AUGUST 11, 2016

According to this article , “It is hard to overstate what a sea change” this sort of architecture will create. I saw two articles talking about his experience: one on redirecting NSX firewall logs into SmartLog and a second one ranting on how the NSX DFW isn’t quite enterprise ready. Operating Systems/Applications.

Vmware 60

Vmware Hardware Storage Linux 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