Linux Academy

MAY 20, 2019

This is filtering provided at the network edge by a firewall with rules (ACLs) restricting what internal users are allowed to access. Some firewalls have the ability to filter by an application (layer 7 firewalls), but we’re going to concentrate on standard packet-filtering firewalls and their capabilities.

Security 60

Security Firewall Malware Linux 60

Scott Lowe

JUNE 28, 2021

My first post on WireGuard showed how to configure WireGuard on Linux, both on the client side as well as on the server side. Some of this information is also found in this WireGuard quick start. For the AllowedIPs setting, you need to specify the VPN IP address of the peer plus any additional networks that are reachable via the peer.

Linux 60

Linux Firewall System Network 60

Linux Academy

FEBRUARY 18, 2019

I only have 3 servers and it’s a very small network, surely he’s not talking to me. Keep in mind, vulnerabilities are not only within server operating systems and applications, but on network devices, IoT devices, workstations, printers, and every other computing device you have. Oh yes, I’m talking to everyone!

Security 60

Security Linux Report Firewall 60

Scott Lowe

OCTOBER 23, 2020

Still, there’s a decent collection of networking, cloud computing, and virtualization articles as well as a smattering of other topics for you to peruse. Networking. ” Ivan Pepelnjak attempts to answer the question, “How much do I need to know about Linux networking?” Servers/Hardware.

Open Source 60

Open Source Vmware Disaster Recovery Linux 60

Linux Academy

JUNE 26, 2019

PCI DSS deals with credit card data, and HIPAA regulates the use of healthcare information. While their requirements differ slightly—and may change annually—both PCI DSS and HIPAA require organizations to build and maintain a secure network and systems using the following security measures: System auditing. Access control.

Security 60

Security Linux Policies Meeting 60

Linux Academy

MARCH 28, 2019

To ensure ongoing security site reliability engineers must work hand-in-hand with the CISO’s (Chief Information Security Officer) office to implement Kubernetes security. With cloud virtualization and advanced networking, vacating a cluster after the initialization of a new one is feasible. Implement Network Policies.

Policies 68

Policies Linux Security Virtualization 68

Scott Lowe

FEBRUARY 2, 2017

Networking. Michael Kashin has a great article on how Open Virtual Network (OVN, part of the Open vSwitch project) implements virtual networks in OpenStack. Yes, the article is slightly OpenStack-centric, but it still remains a very informative look at the different components of OVN and how OVN works. Good advice.

Linux 60

Linux Network Virtualization IPv6 60

Linux Academy

OCTOBER 2, 2019

Hi, I’m Anna, COO of Linux Academy. Anthony is out on some much-needed vacation, but that’s not going to stop us from updating you on everything new in this Linux Academy Monthly Update. We’ve updated our quiz pages with more information, and changed their layout to look more like the rest of our platform! Hands-On Labs.

Linux 13

Linux Disaster Recovery Course Firewall 13

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. Next, he discusses the evolution of network devices so far. Is the Linux bridge efficient enough?

Virtualization 109

Virtualization Intel Cloud Data 109

Scott Lowe

JUNE 18, 2017

Networking. Sjors Robroek describes his nested NSX-T lab that also includes some virtualized network equipment (virtualized Arista switches). I wouldn’t take this information as gospel, but here’s a breakdown of some of the IPv6 support available in VMware NSX. There’s some good information here for Terraform users.

Windows 60

Windows Vmware Virtualization Linux 60

Scott Lowe

JUNE 18, 2017

Networking. Sjors Robroek describes his nested NSX-T lab that also includes some virtualized network equipment (virtualized Arista switches). I wouldn’t take this information as gospel, but here’s a breakdown of some of the IPv6 support available in VMware NSX. There’s some good information here for Terraform users.

Windows 60

Windows Vmware Virtualization Linux 60

Scott Lowe

MARCH 17, 2016

Networking. At DevOps Networking Forum 2016, I had the opportunity to share a presentation on some Linux networking options. Here’s another topic that came up at the recent DevOps Networking Forum: Spotify’s SDN Internet Router (SIR). Here’s some information on Nuage Networks’ experimental Docker Network plugin.

Vmware 60

Vmware Linux Network Open Source 60

Scott Lowe

JUNE 4, 2013

Networking. What happens when multiple VXLAN logical networks are mapped to the same multicast group? This post by Ranga Maddipudi shows you how to use App Firewall in conjunction with VXLAN logical networks. I talked before about the difference between network virtualization and SDN, so no need to mention that again.

HP 105

HP Virtualization Hardware Network 105

Dataconomy

OCTOBER 17, 2023

White hat hackers, also known as ethical hackers or security researchers, are individuals who use their computer programming and networking skills to help organizations protect themselves from cyber threats. These individuals are often highly skilled and have a deep understanding of computer systems, networks, and cybersecurity principles.

Network 45

Network Security Applications System 45

Scott Lowe

OCTOBER 27, 2017

Networking. This is a slightly older post providing an overview of container networking , but still quite relevant. Russell Bryant has a post on Open Virtual Network (OVN) , a project within the Open vSwitch (OVS) community. specifically, the new container network firewall functionality. That’s cool.

Firewall 60

Firewall Virtualization Network Storage 60

Scott Lowe

NOVEMBER 7, 2014

Networking. This post by Matt Oswalt—the first in a series, apparently—provides a great introduction to 5 development tools for network engineers. Matt also recently posted part 4 (of 5) in his series on SDN protocols; this post covers OpFlex and declarative networking. I hope you are able to glean something useful.

Vmware 65

Vmware Linux Storage Virtualization 65

Galido

AUGUST 1, 2016

All In One WP Security & Firewall. Firewall functionality: basic, intermediate and advanced protection. Vobla is a cloud backup service for Linux machines. It gives you info on stuff like uptime, Memory load, Network and HDD space usage so you’re always informed of your server’s state.

Tools 60

Tools Security Backup Firewall 60

Scott Lowe

DECEMBER 10, 2015

Networking. Tor Anderson has an article on using IPv6 for network boot using UEFI and iPXE. has a great blog series going called “Hey, I can DevOps my Network too!” 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.

Firewall 60

Firewall Windows Linux Architecture 60

Scott Lowe

AUGUST 16, 2017

Networking. Sjors Robroek describes his nested NSX-T lab that also includes some virtualized network equipment (virtualized Arista switches). I wouldn’t take this information as gospel, but here’s a breakdown of some of the IPv6 support available in VMware NSX. Welcome to Technology Short Take #84! Servers/Hardware.

Windows 60

Windows Virtualization Devops Vmware 60

Scott Lowe

MAY 3, 2013

Welcome to Technology Short Take #32, the latest installment in my irregularly-published series of link collections, thoughts, rants, raves, and miscellaneous information. I try to keep the information linked to data center technologies like networking, storage, virtualization, and the like, but occasionally other items slip through.

Vmware 106

Vmware Storage Virtualization HP 106

Scott Lowe

MARCH 10, 2015

Networking. I love this post from Matt Oswalt on five next-gen skills for networking pros. It tells me that some skills—specifically, Linux, automation/configuration management, software development concepts—are going to be essential for all new IT pros in the near future. Here’s hoping you find something useful.

Vmware 60

Vmware Linux Hardware Software Development 60

CIO Business Intelligence

JANUARY 4, 2024

Financial institutions must ensure the protection of sensitive personal information, most commonly payment card data, to maintain, trust and meet various regulatory requirements. Data and Information Security In the fast-evolving world of finance, data security is of paramount importance.

Financial 99

Financial Architecture Resources Security 99

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. Networking. It looks like very useful information for anyone supporting NSX in their environment. Welcome to Technology Short Take #53.

Vmware 60

Vmware Linux Virtualization Tools 60

Scott Lowe

JUNE 4, 2013

Networking. What happens when multiple VXLAN logical networks are mapped to the same multicast group? This post by Ranga Maddipudi shows you how to use App Firewall in conjunction with VXLAN logical networks. I talked before about the difference between network virtualization and SDN, so no need to mention that again.

HP 60

HP Virtualization Hardware Network 60

Scott Lowe

MARCH 2, 2017

Networking. Skydive is (in the project’s own words) an “open source real-time network topology and protocols analyzer.” 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. Thinking of virtualizing Linux on Hyper-V?

Linux 60

Linux Devops Open Source Virtualization 60

Scott Lowe

MAY 15, 2013

I’ve written before about adding an extra layer of network security to your Macintosh by leveraging the BSD-level ipfw firewall, in addition to the standard GUI firewall and additional third-party firewalls (like Little Snitch ). The robust pf firewall should now be running on your OS X Mountain Lion system.

Firewall 112

Firewall Resources Linux Security 112

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. Domain 3: Security Engineering. Router/switch security.

Authentication 60

Authentication Security Disaster Recovery Firewall 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 Networking. Numan Siddique describes the native DHCP support available in OVN (Open Virtual Network). Virtualization. Version 2.0

Vmware 60

Vmware Hardware Storage Linux 60

Linux Academy

APRIL 8, 2019

I can find this information on social media and then use a handy little script to generate a password list that just might crack your password. Maybe you have a SIEM, and you identify these attempts in a daily report and then address it by blocking the source IP address in your IPS or firewall. I’d venture to say many of you.

Authentication 68

Authentication Security Firewall Backup 68

CTOvision

FEBRUARY 4, 2015

The Cloudera Federal Forum, now in its 4th year, has always been filled with lessons learned, best practices and informative glimpses into what is coming from the big data tech community. It’s time to unlock the knowledge in your enterprise information and deliver valuable agency insights, decision support, and results. Register here.

Fractional CTO 150

Fractional CTO CTO CTO Hire Big Data 150

CTOvision

JANUARY 18, 2015

Attendees will have the opportunity to attend expert briefings, learn from and network with experienced practitioners, and ask questions to advance their agency data analytics initiatives and save their organization’s time, funding, and staff resources. Registration & Networking Breakfast. Networking Break. Register here.

Program Management 150

Program Management Fractional CTO CTO Programming 150

Galido

MAY 14, 2016

Sometimes you need to chat about something and can’t risk that information falling into the wrong hands. It could be sensitive company information or personal data. That case is probably not acceptable in every situation, especially where mission critical informations have to be exchanged. This is only partially true.

Security 81

Security Open Source Network System 81

Scott Lowe

SEPTEMBER 8, 2016

Networking. 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. This blog post on shielded VMs in Windows Server 2016 is a bit light on details, but the embedded video may be more informative (I didn’t watch it).

Vmware 60

Vmware Linux Intel Storage 60

Linux Academy

NOVEMBER 6, 2019

This November at Linux Academy, we have loads of new content coming your way! To all of our learners who may know someone who wants to learn more about the cloud or Linux, but they have been on the fence about signing up for a free community edition account, then tell them that right now is a great time for them to sign up!

Linux 16

Linux Systems Administration Cloud Google 16

Scott Lowe

FEBRUARY 10, 2015

Networking. Matt Oswalt recently wrapped up his 3-part “DevOps for Networking” series. Helpful and informative content, no question about it. The NFV discussion seems to be heating up a bit, particularly the “networking” part of NFV. tech preview of virtual networks for Docker. Servers/Hardware.

Open Source 60

Open Source Vmware Network IBM 60

Scott Lowe

SEPTEMBER 3, 2013

Networking. A discussion of “statefulness” brought me again to Ivan’s post on the spectrum of firewall statefulness. Cisco shared some thoughts on what they termed a “software-only” approach; naturally, they have a different vision for data center networking (and that’s OK). Servers/Hardware.

Vmware 60

Vmware Data Center Storage Disaster Recovery 60

Fountainhead

MAY 5, 2009

So, not only can you define a virtual server instantly, you can define a *physical* server (maybe a virtual host, or a physical machine) down to I/O, NICs, Storage and Network. Today, the service provider houses over 1,425 virtual servers running on 70 industrystandard Egenera servers, 370 terabytes of storage and 1,250 virtualized firewalls.

Data Center 100

Data Center Virtualization Disaster Recovery Storage 100