Networking Archives - Page 687 of 3346

A DNS view of Lockdown

Over the past couple of decades, we've constructed two quite distinct online environments. There is the enterprise network which is commonly encountered at physical workplaces, and there is the consumer network which has been deployed across residential domains. The result is that many observed characteristics of the network have patterns that reflected the differences between these work and home environments. But what happened when the at-work workforce was sent home to work? What can the DNS tell us about the Lockdown?

Bell Launches Canada’s Largest 5G Wireless Network

MONTRÉAL, June 11, 2020 /CNW Telbec/ – Bell today announced the launch of Canada’s...

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Changes in Intel’s Technology, Systems Architecture and Client Group

Jim Keller to Depart Intel; New Leaders Named SANTA CLARA, Calif., June 11, 2020 – Today, Intel...

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Lanner Electronics Partners With Trilogy Networks to Join the Rural Cloud Initiative

Lanner’s WhiteboxSolutions™ and its Ecosystem Partners Now Join Trilogy’s Distributed...

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Daily Roundup: Cryptominers Attack Azure

Cryptominers attacked Azure; Amazons custom Graviton2 chips landed in in AWS EC2; and SDxCentral's...

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Weekend Reads 061120

Mapping the Internet’s topology improves our understanding of its interconnectivity, and thus its robustness and resilience. One of the best ways to do this is to capture data at the router level; it provides the greatest detail of the physical infrastructure of the Internet. —Kevin Vermeulen

A number of groups are using different approaches to measure Internet outages, including active probing of most of the IPv4 Internet, and passive observation of traffic. Our group at the Information Sciences Institute of the University of Southern California (USC/ISC), developed Trinocular, a system that pings millions of /24 IPv4 blocks every 11 minutes (since October 2014). —Guillermo Baltra

Benefits like wearing pajama bottoms to work and going for a mid-day run can be mitigated by the costs to your motivation, self-confidence, and self-esteem when you no longer hear “you aced it!” from your boss on the walk back from a client meeting, or when you can’t get a high-five in the coffee room from a teammate — or even a smile from the receptionist on your way to the elevator. —Deborah Grayson Riegel

It’s a truism that in computing, the easiest way in the door is with a general-purpose computer, but when Continue reading

Heavy Networking 523: OneOncology Boosts WAN Security, Availability With Silver Peak Unity EdgeConnect SD-WAN (Sponsored)

Today's Heavy Networking podcast focuses on a real-world SD-WAN deployment with OneOncology. The organization deployed an SD-WAN solution from Silver Peak, our sponsor for today's podcast, to securely segment and prioritize electronic medical records over other WAN traffic, get better service quality for critical voice and video applications, and ensure the WAN was highly available. Our guests are Robert Holloway, Infrastructure Manager at OneOncology; and Damon Ennis, SVP of Products at Silver Peak.

The post Heavy Networking 523: OneOncology Boosts WAN Security, Availability With Silver Peak Unity EdgeConnect SD-WAN (Sponsored) appeared first on Packet Pushers.

Heavy Networking 523: OneOncology Boosts WAN Security, Availability With Silver Peak Unity EdgeConnect SD-WAN (Sponsored)

Amazon’s Custom Graviton2 Chips Arrive in AWS EC2

Plus, AMD’s second-generation EPYC processors are available on Amazon's Elastic Compute Cloud.

Security and Salt

One of the things I picked up during the quarantine is a new-found interest in cooking. I’ve been spending more time researching recipes and trying to understand how my previous efforts to be a four-star chef have fallen flat. Thankfully, practice does indeed make perfect. I’m slowly getting better , which is to say that my family will actually eat my cooking now instead of just deciding that pizza for the fourth night in a row is a good choice.

One of the things I learned as I went on was about salt. Sodium Chloride is a magical substance. Someone once told me that if you taste a dish and you know it needs something but you’re not quite sure what that something is, the answer is probably salt. It does a lot to tie flavors together. But it’s also a fickle substance. It has the power to make or break a dish in very small amounts. It can be the difference between perfection and disaster. As it turns out, it’s a lot like security too.

Too Much is Exactly Enough

Security and salt are alike in the first way because you need the right amount to make things work. Continue reading

Exploding Security Perimeter, Remote Worker Ramp Spotlights SD-WAN Limits

Security perimeters have exploded as more than 100 million Americans found themselves setting up...

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Is 5G Really More Secure? It’s Complicated

5G isn’t a cure all, nor does it somehow build a fortress to blunt any nefarious attempts to do...

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DevAsc – Some Handy Linux Commands

Introduction

Linux is becoming more and more prominent in the networking industry. Many of us come from a mixed background and have varying levels of knowledge of Linux. I’ve been around Linux for a long time but really never got beyond the very most basic stuff. Looking back, I wish I had spent some more time learning Sed, Awk, regex, and Bash etc. I was doing some labs over at NRE Labs (great labs), and wanted to highlight some of the things I learned.

Appending To a File With Cat

Sometimes you want to append something quickly to a file or send several lines of text to a Linux command. That can be done using “here documents“.

First, look at this small configuration:

daniel@devasc:~/DevAsc$ cat config.txt 
interface GigabitEthernet0/1
 switchport mode access
 switchport access vlan 10
!
interface GigabitEthernet0/2
 switchport mode access
 switchport access vlan 10
!
interface GigabitEthernet0/3
 switchport mode access
 switchport access vlan 10
!

Now we want to append another interface to the end of this file. We can do that using cat:

daniel@devasc:~/DevAsc$ cat <<EOT >> config.txt 
> interface GigabitEthernet0/4
>  switchport mode access
>  switchport access vlan 10
> !
> EOT

After the cat command, Continue reading

Cloud-Native Security Remains a Complex Organism

“It’s natural that the security factors become critical because now they're suddenly very large...

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Health Check Analytics and how you can use it

At the end of last year, we introduced Standalone Health Checks - a service that lets you monitor the health of your origin servers and avoid the need to purchase additional third party services. The more that can be controlled from Cloudflare decreases maintenance cost, vendor management, and infrastructure complexity. This is important as it ensures you are able to scale your infrastructure seamlessly as your company grows. Today, we are introducing Standalone Health Check Analytics to help decrease your time to resolution for any potential issues. You can find Health Check Analytics in the sub-menu under the Traffic tab in your Cloudflare Dashboard.

As a refresher, Standalone Health Checks is a service that monitors an IP address or hostname for your origin servers or application and notifies you in near real-time if there happens to be a problem. These Health Checks support fine-tuned configurations based on expected codes, interval, protocols, timeout and more. These configurations enable you to properly target your checks based on the unique setup of your infrastructure. An example of a Health Check can be seen below which is monitoring an origin server in a staging environment with a notification set via email.

Once you set Continue reading

Field Engineering and COVID19

First posted in Human Infrastructure Magazine in April 2020 – a free email newsletter from the Packet Pushers. Subscribe here. How does business operate when the pandemic lockdown ‘ends’ and how does it impact you ? COVID19 won’t be gone, its gonna be months before a new ‘normal’ emerges. Getting back to work means close […]

The post Field Engineering and COVID19 appeared first on EtherealMind.

SuzieQ with Dinesh Dutt and Justin Pietsch on Software Gone Wild

In early May 2020 I wrote a blog post introducing SuzieQ, a network observability platform Dinesh Dutt worked on for the last few years. If that blog post made you look for more details, you might like the Episode 111 of Software Gone Wild in which we went deeper and covered these topics:

How does SuzieQ collect data
What data is it collecting from network devices
What can you do with that data
How can you customize and extend SuzieQ

Listen to the podcast

Kubernetes Security: Lateral Movement Detection and Defense

What is Lateral Movement?

Lateral movement refers to the techniques that a cyber-attacker uses, after gaining initial access, to move deeper into a network in search of sensitive data and other high-value assets. Lateral movement techniques are widely used in sophisticated cyber-attacks such as advanced persistent threats (APTs). An adversary uses these techniques to access other hosts from a compromised system and get access to sensitive resources, such as mail systems, shared folders, and legitimate credentials, ultimately gaining access to the identified target. Lateral movement techniques enable a threat actor to avoid detection and retain access over an extended dwell time of weeks, or even months, after the initial breach.

What are the Stages of Lateral Movement?

There are three primary stages of lateral movement: reconnaissance, credential/privilege gathering, and gaining access to other resources in the network.

How Does an Adversary Gain Unauthorized Access to a Kubernetes Cluster?

In a Kubernetes cluster, an attacker will gain initial access by compromising a pod. Once the pod is compromised, there are three main areas where the attacker can begin reconnaissance and move through the lateral movement stages to learn more about the cluster: the cloud provider metadata service, the pod networking and Continue reading

GitLab Acquires Peach Tech and Fuzzit to Expand its DevSecOps Offering

GitLab has acquired Peach Tech, a security software firm specializing in protocol fuzz testing and...

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