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Unbreaking the Internet and Converting Protocols

When CloudFlare took over 1.1.1.1 for their DNS service; this got be thinking about a couple of issues:What do you do if you’ve been using 1.1.1.1 on your network, how do you unbreak the Internet?How can you enable use of DNS over TLS for clients... Read more
2 Reviews

Replacing a DNS Server with F5 BIG-IP DNS

First things first, you have decided to deploy F5 BIG-IP DNS to replace a BIND server after receiving notifications from your information assurance officer or your friendly LinkedIn community that additional CVE's have been identified for the... Read more
1 Review

Pool member status on F5 DNS objects via iControl REST

I got a question on how to retrieve the status of pool members on F5 DNS objects via the iControl REST interface. In the GUI you get fancy red, yellow, black, blue, and green painted circles, diamonds, squares, and triangles to communicate... Read more
1 Review

Post of the Week: iControl REST Subcollections & ZoneRunner Options

In this episode of Post of the Week, Jason addresses a couple iControl REST issues that come up in Q&A often: confusion over how to handle objects that are not sub-collections, and options for working around the lack of F5 DNS cli for... Read more
1 Review

Lightboard Lessons: F5 DNS Order of Operations

In this episode of Lightboard Lessons, Jason covers the order in which all the fantastic services available within the F5 DNS offering are processed. Resources K14510: Overview of DNS query processing on BIG-IP systems Lightboard Lessons: Life of... Read more
1 Review

Lightboard Lessons: F5 BIG-IP DNS (GTM) iQuery Protocol Overview

In this episode of Lightboard Lessons, I introduce iQuery, the F5 proprietary protocol utilized by BIG-IP DNS to exchange system configuration with other BIG-IP DNS systems and performance metrics with all other BIG-IP systems configured to do... Read more
Average Rating: 4.9
4 Reviews

What is BIG-IP DNS?

F5 BIG-IP DNS provides global load balancing (GLSB), DNS services, and basic DDoS protection features. Read more
Average Rating: 4.9
4 Reviews

Lightboard Lessons: BIG-IP DNS Load Balancing Intro

This episode of Lightboard Lessons introduces the big picture of BIG-IP DNS load balancing. Resources BIG-IP DNS Concepts Read more
2 Reviews

F5 DNS Enhancements for DSC in BIG-IP v13

Prior to v13, F5 DNS assumes that all devices in a cluster have knowledge about all virtual servers, which makes virtual server auto-discovery not function properly. In this article, we’ll cover the changes to the F5 DNS server object introduced... Read more
Average Rating: 4.9
3 Reviews

Abusing Open Resolvers

Open DNS resolvers can be used to recursively query authoritative name servers. In fact, a list of open resolvers can be found at http://openresolverproject.org/. Read more
0 Reviews

What is DNS?

What is the Domain Name System (DNS)? Imagine how difficult it would be to use the Internet if you had to remember dozens of number combinations to do anything. The Domain Name System (DNS) was created in 1983 to enable humans to easily identif... Read more
1 Review

Attaque DNS DYN, ou comment se protéger du malware Mirai

En quelques semaines, le monde de l’Internet vient de subir une série d’attaques DDoS ciblée et encore inconnue. Inconnue par la technique utilisée et par le volume. Ces attaques ont une particularité : le nombre de sources... Read more
0 Reviews

Lightboard Lessons: DNS Scalability & Security

The Domain Name Service (DNS) is one of the most important components in networking infrastructure, enabling users and services to access applications by translating URLs (names) into IP addresses (numbers). Because every icon and URL and all... Read more
Average Rating: 4.9
3 Reviews

Agility Day One – A Snapshot

We’ve had a fantastic first day at Agility EMEA in Vienna – thanks to everyone who was able to join us! For anyone who missed out, here’s a snapshot of what took place! First off, we announced this morning the findings from our EMEA survey into... Read more
0 Reviews

Lightboard Lessons: Blackhole DNS

Sometimes people ask to visit places that they have no business visiting.  And, sometimes that craziness must be stopped.  Did you know you can load up an iRule and redirect DNS traffic based on the requested domain name?  Did you... Read more
1 Review

The Dangerous Game of DNS

The Domain Name Service (DNS) is one of the most important components in networking infrastructure, enabling users and services to access applications by translating URLs (names) into IP addresses (numbers). Because every icon and URL and all... Read more
2 Reviews

Application Layer DNS Firewall

Many firewalls and IPS solutions will lay claim to DNS application layer gateways (ALGs), but these solutions do not address many of the more modern threats to DNS infrastructure. These threats include DNS DoS attacks, reflection attacks,... Read more
Average Rating: 4.9
5 Reviews

Building Secure and Scalable 5G Networks

Building Secure and Scalable 5G Networks   Industry projections estimate that there will be 50 billion connected devices worldwide by 2020, or 7 devices for every person on earth. The fifth generation of mobile networks (5G) will be the... Read more
1 Review

Managing Horizon Traffic across Multiple Data Centers with BIG-IP DNS

VMware Horizon virtual desktop clients typically use a fully qualified domain name (FQDN) when accessing desktop and application resources. More and more customers are distributing their Horizon application and desktop infrastucture to distribute... Read more
Average Rating: 4.9
4 Reviews

A Catch from the Codeshare: DNS Response Translation

On the side of the road in northern Missouri just north of Mark Twain’s stomping grounds, there is a slice of hillside removed just to the side of the highway. In Arkansas, there’s a nondescript field tucked away in a state park. Short... Read more
0 Reviews

一般企業向けのF5 DDoSリファレンス アーキテクチャ

今回投稿されたブログは、F5ネットワークスのテクノロジー・エバンジェリストであるDavid Holmesのブログ投稿「The F5 DDoS Reference Architecture - Enterprise Edition」を元に、日本向けに再構成したものです。 DDoSによる攻撃は依然として続いており、現在でもDDoS攻撃に対する防御は重要課題であり続けています。すでにこのDevCentralでは、グローバル金融機関向けのDDoSリファレンス... Read more
0 Reviews

グローバル金融機関向けのF5 DDoSリファレンス アーキテクチャ

今回投稿したブログは、F5ネットワークスのテクノロジー・エバンジェリストであるDavid Holmesのブログ投稿「The F5 DDoS Reference Architecture - Global FSI Edition」を元に、日本向けに再構成したものです。以下は、David Holmesの個人的体験談に基づいています。  皆さんは、ジョージ・クルーニー主演の「マイレージ、マイライフ(原題:Up in the... Read more
0 Reviews

ハイブリッド環境が要求する“よりスマートな”DNS

ハイブリッド環境で変わるDNSの役割  クラウドは実に多くの環境を変化させており、私たちはあらゆる業務領域でIT戦略の見直しを迫られています。アプリケーションの開発・展開の方法は、DevOpsへと変化しつつあり、IT業界のビジネス モデルも従来のライセンス モデルから、電気や水道のような使用量に基づくサブスクリプション モデルへと変わりつつあります。... Read more
0 Reviews

Mitigating BIND CVE-2015-5477 with iRules

While SOL16909: BIND vulnerability CVE-2015-5477 is the official SOL, and the best mitigation is, of course, upgrading to a fixed versions of TMOS, what if you can't upgrade right now?  The best option is to not use BIND at all.... Read more
Average Rating: 4.9
7 Reviews

Connecting Docker to BIG-IP

The following is an example of using BIG-IP to automate the routing of HTTP and DNS requests for containers across a Docker cluster. Read more
2 Reviews