Networking

Cisco Router Vulnerability Puts Network Segmentation at Risk

The network vendor is urging customers to patch, as attackers actively exploit the CDPwn vulnerability. Data centers using Cisco routers with the IOS XR software need to be on alert. Cisco issued a warning last week that attackers were actively exploiting a vulnerability in the Cisco Discovery Protocol, part of a set of vulnerabilities called CDPwn. Cisco recommended that customers upgrade to a fixed version of the software. "There are no workarounds that address this vulnerability," the company said in its alert. However, a patch has been available since February. The vulnerability affects a Layer 2 protocol, meaning the attackers need to be in the same domain. What's significant about this particular vulnerability is that the Layer 2 protocols are the underpinning for all networks and serve as the foundation of network segmentation. These kinds of vulnerabilities can put the network infrastructure itself at risk, reducing the effectiveness of network segmentation as a security strategy, according to Ben Seri, VP of research at Armis, the security firm that originally discovered the problem. If attackers succeed in exploiting CDPwn, they trigger a stack overflow that allows them to execute code with…

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Broadband Internet Users Can Enhance Their Connection with Simple Tricks

Every one of us at some point face issues with the speed of our broadband internet connection. We can’t do a lot of things without a high-speed and reliable internet connection such as streaming full HD or 4K videos, real-time online gaming, and more. If you have picked a high-speed internet plan and yet you don’t get the high speeds, then there are a few things you can do to optimise your Wi-Fi connection. Mentioned below are all the things you can do to improve your Wi-Fi connection. Ways to Improve Broadband Internet Connection First thing’s first, if you have an old router, then please upgrade it to a new one. Modern generation routers provide easy configurations and more data throughput. Once that is done, check the direction of the antenna in the router. Ensure that the antenna of the Wi-Fi router is parallel to the antenna in your gaming device. Even keeping one antenna horizontal and the other one vertical can work well for your gaming, video, or downloading experience. Another thing which you must do is evaluate the strength of the Wi-Fi network.…

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Are You Utilising Your Broadband Connection to its Full Potential

A broadband connection can help you do a countless number of things, but some people might not be utilising it to its full potential The internet has become the oxygen of communication, business, and entertainment for the world. Without the internet, even for a day, many would feel that the whole planet would come to a stop. Since the time COVID-19 pandemic hit the world, people have been relying on their broadband internet connections more than ever. They need it to study and do their work from home. But is it all that a broadband connection is good for? Fibre broadband connections are quite expensive, thus it would be a waste if you get a connection and don’t even use it properly. Today, we are going to list a few ways in which you can utilise your broadband internet connection to its full potential. Communication Via Online Tools and Apps One of the things that the internet has done for people is bring them close to each other. Communication has become seamless because of the internet and all of it happens in real-time. You can text…

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AWS and their Billions in IPv4

I was doing some work on AWS and wanted to know what IP addresses were being used. Luckily for me, AWS publishes this all here https://ip-ranges.amazonaws.com/ip-ranges.json. When you go through this list, you’ll quickly see that AWS has a massive asset of IPv4 allocations. Just counting quickly I noticed a lot of big prefixes. However, the IPv4 ranges on that list are just the ranges that are in use and allocated today by AWS. Time to dig a bit deeper. IPv4 address acquisitions by AWS Over the years, AWS has acquired a lot of IPv4 address space. Most of this happens without gaining too much attention, but there were a few notable acquisitions that I’ll quickly summarize below. 2017: MIT selling 8 million IPv4 addresses to AWS In 2017 MIT sold half of its 18.0.0.0/8 allocation to AWS. This 18.128.0.0/9 range holds about 8 million IPv4 addresses. 2018: GE sells 3.0.0.0/8 to AWS In 2018 the IPv4 prefix 3.0.0.0/8 was transferred from GE to AWS. With this, AWS became the proud owner of its first /8! That’s sixteen million new IPv4 addresses to feed us hungry AWS…

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Catalyst 8000 Edge Family

Networking Introducing the Catalyst 8000 Edge Family, Cisco’s New SD-WAN Platform We have been asking more of our networks lately. The cloud has become the operating platform for the new enterprise, while SASE, multicloud architectures, and edge applications add new levels of complexity. It’s time for us to revamp the WAN edge devices that handle the network traffic, to address these needs. At the same time we need to keep IT teams agile, so they can support resilient businesses. I am thus very proud to announce availability of an entire new line of edge devices, the Catalyst 8000 Edge Platforms and Catalyst Cellular Gateway. An upgrade path from several of Cisco’s ISR and ASR routers, the Catalyst 8000 line is built for SD-WAN, multicloud, security, and analytics — for managing traffic that is increasingly distributed across the cloud. The Catalyst 8000 family provides the security, performance, and agility our customers need. It will serve enterprises with seamless connectivity and consistent policy-based automation for all users, customers, and applications. On top of that, our new Catalyst Cellular Gateways will allow networks to add cellular connectivity – including…

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