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Improving Network Security Through Segmentation

While segmentation may seem to increase network complexity due to the additional filtering points, a good implementation will improve and simplify security.

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Medical device vulnerability could let hackers steal Wi-Fi credentials

Vulnerabilities on battery units for medical infusion pump devices made by Baxter could allow for network access, DoS and man-in-the-middle attacks, highlighting IoT security issues and the need to properly decommission equipment, security firm Rapid7 reports.

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2-Minute Linux Tip: How to use the CD command

In this Linux tip, we’re going to look into several uses of the cd command. While it’s routinely used to move into a different directory, there are some more unusual ways to use this command.

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Video: Testing IPv6 RA Guard

After discussing rogue IPv6 RA challenges and the million ways one can circumvent IPv6 RA guard with IPv6 extension headers, Christopher Werny focused on practical aspects of this thorny topic: how can we test IPv6 RA Guard implementations and how good are they?

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Sender Pays

The entire set of issues of network neutrality, interconnection and settlements, termination monopolies, cost allocation and infrastructure investment economics is back with us again. This time it’s not under the banner of “Network Neutrality,” but under a more directly confronting title of “Sender Pays”. The principle is much the same: network providers want to charge both their customers and the content providers to carry content to users.

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ExtraHop SAML Authentication with Azure AD

I was recently working with a customer to configure Azure AD as the SAML provider for their ExtraHop appliances. Although the process is pretty well documented in the ExtraHop docs, it is spread out in a few locations and there are a couple of gotchas we ran into. In this post, I...continue reading

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AmeriSave Moved Its Microservices to the Cloud with Traefik’s Dynamic Reverse Proxy

When Patrick Markert started AmeriSave, only general guidelines for determining rates were available online. “At that time, finance was very old-school, with lots of paper and face-to-face visits,” said

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How to copy files to multiple locations on Linux

Using a series of commands to copy a file to multiple locations or a number of files to a single location can be time-consuming, but there are options to speed up the process. This post explains some of them.Multiple commands like these can to copy a single file to a series of directories on your system:$ cp myfile dir1 $ cp myfile dir2 $ cp myfile dir3 One way to make the task easier is typing the first command and then repeat the command by only specifying the needed changes. This method relies on whether the file or directory names are similar enough to substitute only some portion of the names. [ Get regularly scheduled insights by signing up for Network World newsletters. ]To read this article in full, please click here

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How to copy files to multiple locations on Linux

Using a series of commands to copy a file to multiple locations or a number of files to a single location can be time-consuming, but there are options to speed up the process. This post explains some of them.Multiple commands like these can to copy a single file to a series of directories on your system:$ cp myfile dir1 $ cp myfile dir2 $ cp myfile dir3 One way to make the task easier is typing the first command and then repeat the command by only specifying the needed changes. This method relies on whether the file or directory names are similar enough to substitute only some portion of the names. [ Get regularly scheduled insights by signing up for Network World newsletters. ]To read this article in full, please click here

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Cisco plans to predict, solve network problems via SaaS

Two years after it was it was acquire by Cisco, ThousandEyes' intelligent network software is now at the heart of the networking giant’s strategy to predict and fix network problems before they cause trouble.When it bought the compnay, Cisco acquired its cloud-based software package that analyzed everything from performance of local and wide-area networks to ISP, cloud, and collaboration-application performance to the health of the internet. Its cloud, enterprise, and endpoint-agent technology has been integrated in one fashion or another across Cisco’s core product lines such as its Catalyst, Nexus switches, and now that technology is part of Cisco's latest effort: predictive networking.To read this article in full, please click here

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Addressing Severe Brain Drain and Networking Hiring Challenges

Many enterprises are eyeing network automation tools to mitigate challenges associated with understaffed network teams.

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IPv6 Buzz 109: Microsegmentation With IPv6

In this episode of the IPv6 Buzz podcast, Ed, Scott, and Tom talk about microsegmentation with IPv6 and what the IT use cases look like.

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IPv6 Buzz 109: Microsegmentation With IPv6

In this episode of the IPv6 Buzz podcast, Ed, Scott, and Tom talk about microsegmentation with IPv6 and what the IT use cases look like.

The post IPv6 Buzz 109: Microsegmentation With IPv6 appeared first on Packet Pushers.

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Upcoming Live Training: Data Center Fabrics

I’ve rebuilt my data center fabrics live training class, adding a lot of new material across the board, and adding a few new topics. To cover all this new material, the class has been expanded from three to six hours. I’m teaching it for the first time on the 29th and 30th of this month.

Register here.

From the Safari Books description—

Data centers are the foundation of the cloud, whether private, public, on the edge, or in the center of the network. This training will focus on topologies and control planes, including scale, performance, and centralization. This training is important for network designers and operators who want to understand the elements of data center design that apply across all hardware and software types.

This class consists of two three-hour sessions. The first session will focus on the physical topology, including a short history of spine-and-leaf fabrics, the characteristics of fabrics (versus the broader characteristics of a network), and laying out a spine-and-leaf network to support fabric lifecycle and scaling the network out. The first session will also consider the positive and negative aspects of using single- and multi-forwarding engine (FE) devices to build a fabric, and various aspects of Continue reading

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Hedge September 2022 Update

Lots of interesting stuff coming up this month on the Hedge, and here at Rule11 … listen here to find out all about upcoming episodes and training.

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You can register for the DC fabric training I mention in this update here.

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Hedge 146: Leslie Daigle and Unwanted Traffic in the DFZ

How much of the traffic on the Internet is wasted—traffic no-one really wanted, and yet is being carried and paid for by providers and end users? In a world increasingly concerned about the waste of precious resources, this is an important topic to consider. Leslie Daigle joins Russ White and Tom Ammon on this episode of the Hedge to discuss the kinds of traffic she’s seeing hit their large-scale honey-trap, and the implications for the Internet.

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From Bits to Application Data

Long long time ago, Daniel Dib started an interesting Twitter discussion with this seemingly simple question:

How does a switch/router know from the bits it has received which layer each bit belongs to? Assume a switch received 01010101, how would it know which bits belong to the data link layer, which to the network layer and so on.

As is often the case, Peter Paluch provided an excellent answer in a Twitter thread, and allowed me to save it for posterity.

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Arm lawsuit threatens Qualcomm chips developed by its Nuvia subsidiary.

Arm Holdings has filed suit against tech giant Qualcomm and its Nuvia subsidiary breach of license agreements and trademark infringement.The move comes just days after word broke that Qualcomm was looking to re-enter the server market, and take a swing at the client/desktop market as well. Qualcomm bought Nuvia, founded by ex-Apple SoC designers, for $1.4 billion last year. [ Get regularly scheduled insights by signing up for Network World newsletters. ]To read this article in full, please click here

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Arm lawsuit threatens Qualcomm chips developed by its Nuvia subsidiary.

Arm Holdings has filed suit against tech giant Qualcomm and its Nuvia subsidiary breach of license agreements and trademark infringement.The move comes just days after word broke that Qualcomm was looking to re-enter the server market, and take a swing at the client/desktop market as well. Qualcomm bought Nuvia, founded by ex-Apple SoC designers, for $1.4 billion last year. [ Get regularly scheduled insights by signing up for Network World newsletters. ]To read this article in full, please click here

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New Trident 4C ASIC Includes Real-Time Threat Analysis Option

Broadcom has announced a new ASIC in the Trident family that can monitor flows in real time to identify anomalies that may indicate DDoS attacks, port scans, data exfiltration, and other threats, but has yet to announce security partners to take advantage of this capability.

The post New Trident 4C ASIC Includes Real-Time Threat Analysis Option appeared first on Packet Pushers.