Packets DownRange
I have written many times that ISPs should be running their own local recursive DNS servers. Today I am releasing this new version of my DNS recursive script for Ubuntu to the public.
https://web.archive.org/web/20130215021006/https://www.tummy.com/articles/famous-dns-server/ Chances are that if you’re a network operator you know the IP address 4.2.2.2. It’s an easy to type and easy to remember address, which since 1998 has been a “beefy” DNS service responding to the public Internet. Since you need DNS before you can use anything other than IP addresses on the Internet, … Read more
Want to really geek out on one of the fundamental cornerstone of the Internet? Watch this video. https://www.youtube.com/watch?v=FbzJgsXAW3o I can’t embed the video as they have turned off that feature.
It’s been a busy almost spring so far. One of the highlights of the past few months was being invited to do a Hedge Podcast with Russ White and Tom Ammon. It was a great time. We talked about the unpopular opinion of accepting prefixes smaller than /24. On to other news… Data Center News … Read more
Guest Post From Glenn Kelley at Connectivity Engineer “Why ISPs Should Totally Rely on Google and CloudFlare for DNS (Wink, Wink)” Alright, folks, gather round as we explore the hilariously absurd notion that Internet Service Providers (ISPs) should shirk their responsibility and just use free DNS servers like Google’s or CloudFlare’s. This is the same … Read more
Glenn Kelley has a great article on spinning up your own DNS resolvers. This is a critical piece of infrastructure if you are in internet Service Provider (ISP). https://www.linkedin.com/pulse/making-dns-server-your-network-uses-root-hints-glenn-kelley As Glenn writes. Here’s why ISPs should consider running their own: This is especially important in high-latency networks such as in the 3rd world or some … Read more
Over the years, I have written articles on Domain Name System (DNS) and how and why you should do certain things. I came across this DNS graphic this morning. Image Credit: @Rapid_API As you can see, a never-before-seen DNS request is sent to a resolver, then a root server, then a TLD server, then an … Read more
DNS Reaper is yet another sub-domain takeover tool, but with an emphasis on accuracy, speed and the number of signatures in our arsenal! We can scan around 50 subdomains per second, testing each one with over 50 takeover signatures. This means most organisations can scan their entire DNS estate in less than 10 seconds. https://github.com/punk-security/dnsReaper?utm_source=tldrnewsletter
If you are not familiar with how DNS works, please go and read this article and watch the accompanying video. In this article we will talk about the different types of DNS servers an ISP will encounter and the design considerations of implementing them into your network. Let’s jump into the three types. Cache servers … Read more
DNS Shotgun is capable of simulating real client behaviour by replaying captured traffic over selected protocol(s). The timing of original queries as well as their content is kept intact. https://dns-shotgun.readthedocs.io/en/stable/key-concepts/
Finally had some time to contribute to another podcast I am a part of. http://thebrotherswisp.com/index.php/the-brothers-wisp-115-wisp-after-death-unifi-video-eol-rpki-basics/ This week we talk about:WISP Virtual Summit July 28thSave Dave’s brainRIP Ubiquiti Unifi Video – EOL 1/1/2021zwift.comCloudflare DNS outageDavid – Arduino, PHP programming, cycling and weight loss, new kid,Wilson’s RPKIMike got some new hardware; a stent!I’m done with my sales … Read more
This content is for Patreon subscribers of the j2 blog. Please consider becoming a Patreon subscriber for as little as $1 a month. This helps to provide higher quality content, more podcasts, and other goodies on this blog.To view this content, you must be a member of Justin’s Patreon Unlock with PatreonAlready a qualifying Patreon … Read more