Navigating the Connectivity Landscape: Best Practices for Securing Network Architecture
Connectivity is no longer just an enabler. Network architecture must now take security and resilience into account, as well.Introducing per hostname TLS settings — security fit to your needs
One of the goals of Cloudflare is to give our customers the necessary knobs to enable security in a way that fits their needs. In the realm of SSL/TLS, we offer two key controls: setting the minimum TLS version, and restricting the list of supported cipher suites. Previously, these settings applied to the entire domain, resulting in an “all or nothing” effect. While having uniform settings across the entire domain is ideal for some users, it sometimes lacks the necessary granularity for those with diverse requirements across their subdomains.
It is for that reason that we’re excited to announce that as of today, customers will be able to set their TLS settings on a per-hostname basis.
The trade-off with using modern protocols
In an ideal world, every domain could be updated to use the most secure and modern protocols without any setbacks. Unfortunately, that's not the case. New standards and protocols require adoption in order to be effective. TLS 1.3 was standardized by the IETF in April 2018. It removed the vulnerable cryptographic algorithms that TLS 1.2 supported and provided a performance boost by requiring only one roundtrip, as opposed to two. For a user to benefit from Continue reading
Top Security Benefits of Improving Network Resiliency
In this archived panel discussion sponsored by Absolute Software, Steve Fallin connects with Ariel Robinson and Sherelle Moore to deliver an in-depth conversation detailing the 'Security Benefits of Improving Network Resiliency' during our 'Network Resilience Boot Camp' presented by Data Center Knowledge and Network Computing. This excerpt is from our live 'Network Resilience Boot Camp' virtual event moderated by Bonnie D. Graham on June 29, 2023.Heavy Wireless 008: 3D Printing For Wireless Engineers
3D printing is a popular activity among wireless network engineers. Given that they deal with invisible, intangible radio waves all day, maybe it's no surprise they'd enjoy making things they can touch and feel. On today's Heavy Wireless we talk about why the wireless community enjoys 3D printing, and how engineers can make and use printed objects on the job--and at home.
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Heavy Wireless 008: 3D Printing For Wireless Engineers
3D printing is a popular activity among wireless network engineers. Given that they deal with invisible, intangible radio waves all day, maybe it's no surprise they'd enjoy making things they can touch and feel. On today's Heavy Wireless we talk about why the wireless community enjoys 3D printing, and how engineers can make and use printed objects on the job--and at home.A Look At Broadcom’s Jericho3-AI Ethernet Fabric: Schedules, Credits, And Cells
Broadcom has come up with some interesting mechanisms to address the challenges of building an Ethernet-based fabric that supports AI workloads. These mechanisms, which include a scheduling framework, cells, and credits, are intended to minimize congestion, latency, and dropped frames or packets in the fabric. In this post I talk about what I learned at […]
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Grafana Network Weathermap
Deploy real-time network dashboards using Docker compose, describes how to quickly deploy a real-time network analytics stack that includes the sFlow-RT analytics engine, Prometheus time series database, and Grafana to create dashboards. This article describes how to extend the example using the Grafana Network Weathermap Plugin to display network topologies like the ones shown here.
Project Cybersafe Schools: Bringing security tools for free to small K-12 school districts in the US
Like other under-resourced organizations, schools face cyber attacks from malicious actors that can impact their ability to safely perform their basic function: teach children. Schools face email, phishing, and ransomware attacks that slow access and threaten leaks of confidential student data. And these attacks have real effects. In a report issued at the end of 2022, the U.S. Government Accountability Office concluded that schools serving kindergarten through 12th grade (K-12) reported significant educational impact and monetary loss due to cybersecurity incidents, such as ransomware attacks. Recovery time can extend from 2 all the way up to 9 months — that’s almost an entire school year.
Cloudflare’s mission is to help build a better Internet, and we have always believed in helping protect those who might otherwise not have the resources to protect themselves from cyberattack.
It is against this backdrop that we’re very excited to introduce an initiative aimed at small K-12 public school districts: Project Cybersafe Schools. Announced as part of the Back to School Safely: K-12 Cybersecurity Summit at the White House on August 8, 2023, Project Cybersafe Schools will support eligible K-12 public school districts with a package of Zero Trust cybersecurity solutions — for Continue reading
Python – Using the IP Address Module to Calculate IPs
I’m currently preparing for a network rollout and the preparation includes assigning subnets to the sites. There are subnets needed for management, wired users, wireless users, guests, and so on. Once subnets have been assigned, for some of the subnets, DHCP scopes need to be created. The team managing the server has requested that information on the subnets, gateway, and what IP the scope begins and ends with be provided as a CSV file. This will allow for easily importing the scopes into the server.
For my scenario, I have the information in a spreadsheet and I’m accessing the information using the openpyxl project. I am then using the ipaddress library to take the prefix from the spreadsheet and performing various calculations. Why use Python for this?
- Writing CSV is time consuming for humans.
- Although I’m quite good at performing calculations, I’m not better than a computer.
- Using code means consistent output that is less error prone.
The goal is to create a line of CSV that looks like this:
VLAN 100 User,192.0.2.64,255.255.255.192,192.0.2.65,192.0.2.75,192.0.2.126,US0100 NY,example.com,
This line consists of:
- Subnet name.
- Network.
- Network mask.
- Gateway.
- Continue reading
Tech Bytes: Spotting Performance Problems Faster With Digital Experience Monitoring (Sponsored)
Today on the Tech Bytes podcast we get into Digital Experience Monitoring (DEM). DEM goes beyond traditional SLAs by offering more precise measurements of network and application performance as experienced by end users, and can provide detailed measurements to help network engineers identify and respond to problems. We talk with sponsor Fortinet about how it delivers DEM.
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Tech Bytes: Spotting Performance Problems Faster With Digital Experience Monitoring (Sponsored)
Today on the Tech Bytes podcast we get into Digital Experience Monitoring (DEM). DEM goes beyond traditional SLAs by offering more precise measurements of network and application performance as experienced by end users, and can provide detailed measurements to help network engineers identify and respond to problems. We talk with sponsor Fortinet about how it delivers DEM.More Enterprises Opt for Single-Vendor SASE Solutions
A Dell’Oro Group forecast report finds great and growing interest in single-vendor SASE over multi-vendor solutions.Network Break 441: AWS Makes You Pay For IPv4; Superconductor Claims Meet Resistance; An Ultra Ethernet Q&A
Take a Network Break! This week we discuss new charges for IPv4 addresses being levied by AWS, Cisco's acquisition of a BGP monitoring service, and financial results for a host of tech companies. We also speak with J Metz, the Steering Committee Chair of the Ultra Ethernet Consortium to learn more about the organization's goals; and examine the efforts to investigate claims of a breakthrough in superconducting research.
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