CloudFaire

MARCH 10, 2025

DNS resolver to measure the popularity of specific Generative AI services. We typically do this for our Year in Review and now also on the DNS domain rankings page of Cloudflare Radar, where we aggregate related domains for each service and identify sites that provide services to users. DNS resolver. AI Code Assistant 6.8%

DNS 92

DNS Internet Artificial Intelligence Engineering 92

Packet Pushers

DECEMBER 1, 2022

In this episode, Ed, Scott, and Tom talk about DNS and IPv6. We cover legacy IPv6 brokeness and DNS, how DNS performs over v6, and how DNS works with v6-only networks. In this episode, Ed, Scott, and Tom talk about DNS and IPv6.

DNS 52

DNS Network Networking 52

Cloudera Blog

FEBRUARY 12, 2024

In Cloudera deployments on public cloud, one of the key configuration elements is the DNS. If the DNS is set up less ideal than it could be, connectivity and performance issues may arise. In this blog, we’ll take you through our tried and tested best practices for setting up your DNS for use with Cloudera on Azure.

DNS 52

DNS IP Address Server Firewall 52

Network Engineering

JANUARY 7, 2025

On the domain's DNS, I have The MX record with the SES inbound point. I have DNS on for a client email service. I have domain level verification. Sending emails is fine. I'm trying to get inbound emails. Both the SES and email client MX records are on the root domain (@).

DNS 130

DNS Email 130

Packet Pushers

OCTOBER 15, 2020

DNS Flag Day is a community effort by service providers and DNS software vendors to address DNS issues. In this week's IPv6 Buzz episode, Ed and Scott speak with guest Andrew Wertkin about the DNS flag day for 2020, which took place October 1st.

DNS 52

DNS 52

CATO Networks

NOVEMBER 2, 2021

In the past several years, we have seen multiple malware samples using DNS tunneling to exfiltrate data. BazarCall can lead to Anchor malware that uses DNS tunneling to communicate with C2 servers. APT groups also used DNS tunneling in a malware campaign to target government organizations in the Middle East.

DNS 52

DNS Network Networking Server 52

AWS Architecture

OCTOBER 16, 2024

In Part 2, well achieve an arguably superior solution using Domain Name System (DNS) resolution. Using a DNS to resolve the address for WebLogic admin server Lets look at the reference WebLogic deployment architecture on AWS shown in Figure 1. Create a mechanism to automatically update the DNS entry when the admin server is launched.

DNS 56

DNS Server IP Address Internet 56

Packet Pushers

JULY 15, 2022

DNS is our subject on today's Heavy Networking. More specifically, DNS transport over TCP. We talk with John Kristoff, one of the forces behind RFC9210, which covers the operational requirements for DNS transport over TCP. This is not an esoteric document covering a tiny, nuanced DNS use case.

DNS 52

DNS TCP Network Networking 52

Obkio

DECEMBER 20, 2023

Master DNS issues with this comprehensive guide! Identify issues, optimize DNS performance & elevate your skills. Explore Obkio for advanced DNS monitoring.

DNS 52

DNS 52

Packet Pushers

SEPTEMBER 20, 2018

Today's IPv6 Buzz podcast dives into the critical relationship between IPv6 and DNS with guest Cricket Liu, author and Senior Fellow at Infoblox. We drill into DNS64 and DNSSEC, and look into DNS's future. We drill into DNS64 and DNSSEC, and look into DNS's future.

DNS 52

DNS 52

Packet Pushers

NOVEMBER 12, 2021

The DNS Abuse Institute is a community effort to develop solutions to DNS-related problems including malware, botnets, phishing, pharming, and spam. On today's show we speak with its Director, Graeme Bunton, about the institute and its work, and the challenges of dealing with malicious actors that exploit DNS and domain names.

DNS 52

DNS Network Networking 52

4sysops

FEBRUARY 26, 2025

Microsoft fixes Entra ID authentication issue caused by DNS change Microsoft resolved a DNS-related issue affecting Entra ID authentication, which disrupted access to its services. The problem arose during a cleanup effort that inadvertently removed a domain essential for the Seamless SSO feature.

DNS 52

DNS 52

Network Engineering

FEBRUARY 2, 2025

I only know a few terms (and not all of them): IPv4, IPv6, DNS, DPI but I dont actually understand what they mean. I want to understand computer networks. Where should I start? Im completely lost. Can I ask questions like this here? If you answer, Ill be very grateful!"

Network 130

Network Networking DNS 130

Packet Pushers

APRIL 21, 2023

In this episode, Ed, Scott, and Tom discusshow hosts OSes such as Windows, Apple, and Android automatically obtain both IPv6 addressesand DNS server information. In this episode, Ed, Scott, and Tom discusshow hosts OSes such as Windows, Apple, and Android automatically obtain both IPv6 addressesand DNS server information.

DNS 52

DNS Server 52

InfoQ Articles

OCTOBER 11, 2024

By implementing batch compression and switching to DNS-based discovery, Netflix optimizes efficiency, reduces bandwidth usage and significantly lowers operational costs. This infrastructure ensures global availability and resilience through intelligent data routing and flexible replication strategies.

DNS 123

DNS Bandwidth Server Cloud 123

Packet Pushers

APRIL 7, 2023

Lots of them run apps that discover services on your network via multicast DNS (mDNS). Lots of them run apps that discover services on your network via multicast DNS (mDNS). You know all those Apple and other IoT devices connected to your wireless network?

DNS 52

DNS Wireless Network Networking 52

Kentik

AUGUST 21, 2017

Dashboards for DNS Metrics Reveal Issues With Your Infrastructure. Working behind the scenes, Domain Name Server (DNS) is often overlooked, but it’s one of the most critical pieces of the Internet infrastructure. That point was driven home by the Mirai DDoS attack last October against the DNS infrastructure of Dyn, Inc.

DNS 40

DNS Server IP Address Ethernet 40

ByteByteGo

JANUARY 11, 2025

DNS lookup begins (think of it as looking up a phone number). The request goes through different DNS servers (root, TLD, and authoritative). First up, you type the website address in the browser’s address bar. The browser checks its cache first. If there’s a cache miss, it must find the IP address.

IP Address 201

IP Address TCP Server DNS 201

CloudFaire

APRIL 8, 2025

APIs are available in the Workers Runtime including APIs from the crypto , tls , net , and dns modules. APIs, recently adding support for the crypto , tls , net , and dns modules. This occurred when mongodb used the node:dns module to do a DNS lookup of a hostname. Deploy to Workers, with as few changes as possible Node.js

Server 120

Server JavaScript Application DNS 120

Network Engineering

AUGUST 19, 2020

dns-server 10.0.0.2 dns-server 10.0.0.2 dns-server 10.0.0.2 dns-server 10.0.0.2 ! ! ip dhcp pool mgmt network 10.0.0.0 255.255.255.0 default-router 10.0.0.1 domain-name LAN ip dhcp pool trusted network 10.0.10.0 255.255.255.0 default-router 10.0.10.1 ip dhcp pool untrusted network 10.0.20.0 255.255.255.0 255.255.255.0

IP Address 130

IP Address DNS Routers Server 130

CloudFaire

APRIL 8, 2025

NodeJS compatibility for Workers is becoming more comprehensive with the crypto , dns , timers , tls , and net NodeJS modules now being natively implemented by the Workers runtime. The remaining modules that are not yet implemented are supported through unenv.

Routers 115

Routers Application Server DNS 115

Obkio

APRIL 10, 2024

Learn how the hostname of a traceroute hops can provide information about the real path from the source to the destination. Try Obkios Live Traceroute now!

DNS 52

DNS 52

Kentik

JANUARY 24, 2022

Lots of applications use these ports today, including DNS lookups and email. Some of the IP addresses these services use will reverse DNS resolve to a hostname that gives away the application; however, a huge portion will not. NetFlow application monitoring: Use DNS logs. How did this happen? NetFlow with NBAR.

Application 96

Application IP Address DNS Port 96

Kentik

SEPTEMBER 22, 2021

Kentik’s OTT Service Tracking (part of Kentik Service Provider Analytics) combines DNS queries with NetFlow to allow a user to understand exactly how OTT services are being delivered - an invaluable capability when trying to determine what is responsible for the latest traffic surge. OTT Service Tracking.

DNS 145

DNS Port Routers Network 145

Kentik

OCTOBER 6, 2017

And Google disclosed seven vulnerabilities in DNS’ Dnsmasq software. Yet More DNS and DHCP Vulnerabilities (Google Blog). Most Companies Are Unprepared for DNS Attacks (HelpNetSecurity). Russia also made headlines for its covert efforts to steal secrets from the NSA.

DNS 40

DNS Internet Network Networking 40

ByteByteGo

JANUARY 25, 2025

After DNS resolution, the requests reach the app servers. 10 Essential Components of a Production Web Application It all starts with CI/CD pipelines that deploy code to the server instances. Tools like Jenkins and GitHub help over here. The user requests originate from the web browser.

Cookie 167

Cookie Gateway Server Application 167

Network Engineering

APRIL 23, 2014

dns-server value 1.inside.dc.ip.1 dns-server value 1.inside.dc.ip.1 ASA Version 8.2(5) 255.255.255.0 interface Vlan2 nameif outside security-level 0 ip address 1.outside.ip.1 outside.ip.1 1 255.255.255.0 interface Vlan5 nameif dmz security-level 50 ip address 192.168.2.1 255.255.255.0 255.255.255.0 255.255.255.0 route outside 0.0.0.0

IP Address 130

IP Address VPN DNS Encryption 130

Kentik

OCTOBER 12, 2021

Some NPM vendors started pairing DNS lookup records with flow data in order to separate business applications from non-business applications hosted on the same IP address. The problem is that many companies have several DNS servers spread out in far-reaching locations, and not all DNS vendors allow access to the logs.

Encryption 84

Encryption DNS IP Address Protocol 84

Network Engineering

JANUARY 4, 2025

From a networking point of view, DNS is functional and there are no firewall entries that can restrict the traffic. Has anyone got a list of FQDN's and IP's that should be whitelisted for Samsung Pay?

Firewall 130

Firewall DNS Gateway Routers 130

Network Engineering

OCTOBER 7, 2015

24)T8 Cleansed config pasted below: crypto isakmp policy 10 encr aes authentication pre-share group 2 crypto isakmp key address no-xauth crypto isakmp keepalive 20 3 crypto isakmp client configuration group ABC key dns domain pool ABCpool acl 150 max-logins 10 netmask 255.255.255.0 Running C3825-ADVIPSERVICESK9-M Version 12.4(24)T8

VPN 130

VPN Port Routers Server 130

Kentik

JANUARY 10, 2022

Domain lookup time : When a connection is made to a domain, the local operating system must first reach out to the DNS to resolve that hostname to an IP address. Where is the DNS? Is your PC using a DNS on the same local area network as your computer? The HTML, the CSS, etc. all have to be downloaded.

IP Address 98

IP Address DNS TCP Application 98

CloudFaire

MARCH 19, 2025

Just like the Internet, we can use DNS in our private network. While public DNS serves as the phone book for the entire Internet, private DNS is more like a school directory that is only valid for phone numbers within the campus. I can host an application on application.mycompany , and it is a valid internal DNS record.

Application 87

Application IP Address Gateway DNS 87

Network Engineering

JULY 3, 2021

threat-detection basic-threat threat-detection statistics access-list no threat-detection statistics tcp-intercept webvpn username cisco password 3USUcOPFUiMCO4Jk encrypted ! class-map inspection_default match default-inspection-traffic ! !

VPN 130

VPN IP Address Encryption TCP 130

Kentik

OCTOBER 4, 2021

Included in the withdrawn prefixes were the IP addresses of Facebook’s authoritative DNS servers, rendering them unreachable. During the outage, the TCP traffic went away entirely, leaving a small amount of UDP traffic consisting of DNS retries from Facebook’s 3.5 billion users attempting in vain to reconnect to their services.

TCP 145

TCP DNS Server Media 145

Network Engineering

AUGUST 12, 2019

I am so confused with fundamentals that I used to be an expert in, so I have this topology Please answer to my questions separately, Question 1) So if I have two DNS severs, and ofc two IP address(81.1.1.30 & 31) available from the ISP This config would be suffice for Port forwarding? 80 81.1.1.30 80 81.1.1.31

IP Address 130

IP Address Topology DNS Port 130

4sysops

APRIL 14, 2025

DNSSEC is a security standard that protects the Domain Name System by ensuring only authorized servers can respond to DNS queries. Microsoft’s DNS server has supported DNSSEC zone signing for some time.

Server 52

Server DNS 52

DoorDash Engineering

AUGUST 15, 2023

For example, our DNS probe has an event with just the network namespace id (netns), process id (pid), and the raw packet data. pkg: github.com/doordash/bpfagent/pkg/tracing/dns cpu: Intel(R) Core(TM) i9-8950HK CPU @ 2.90GHz BenchmarkEventUnmarshal-12 8289015 127.0 rdr, err := ringbuf.NewReader(p.objs.Events) //.

DNS 84

DNS TCP Application Network 84