TP-Link
TP-Link network equipment hijacks some DNS requests
No one remembers the IP address of their favorite websites. Why should you remember your router’s IP address? TP-Link hijacks DNS to give itself a domain name.
DNS
Common mistakes in BIMI early-adopter implementations
The Brand Indicators for Message Identification (BIMI) standard has strict requirements for an email sender’s logo to show up in your inbox. 65,1% gets it wrong.
DNS
What domain name to use for your home network
Always use the ‘.home.arpa’ top-level domain (RFC 8375), and don’t use the special-purpose ‘.local,’ or made-up undelegated domain names like ‘.lan’ or ‘.home.’
DNS
.blog vs .com TLD performance
Traditional and established top-level domain resolves faster than the newfangled .blog top-level domain. Unsurprising, but worrisome.
Web Browsers
What to <link rel=dns-prefetch> and when to use preconnect
Learn the difference between dns-prefecth vs preconnect, how to work around browser bugs, and when to use which? iOS and Safari requires special attention.
Linux
How to disable outgoing mDNS broadcasts on Linux
Tutorial for quieting Multicast DNS using various firewall front-ends for Linux’s iptables firewall such as FirewallD and Ubuntu’s UFW.
DNS
Hurricane Electric secondary DNS adds support for TSIG authentication
I asked HE DNS if they had plans to support TSIG authenticated AXFR requests. Weeks later they rolled out support for the feature.
Censorship
Well-Known URI vs DNS-SD for distributed web service-discovery
I compare the resilience of DNS Service-Discovery vs HTTPS Well-Known URIs when routing distributed internet traffic around censorship.
DNS
Secondary authoritative DNS service providers compared
A comparison of the security features and other features offerings (AXFR, DNSSEC, TSIG, IPv6) at 14 different secondary/slave DNS providers.
CDN
Compared DNS caching/TTL of different CDNs
Short DNS TTL times are great for failover but can be detrimental to DNS performance. Here’s a comparison of the DNS TTL caching durations of popular CDNs.
DNS
A survey of DNS caching and TTL in end-user client software
Web browsers and other clients vary greatly in their handling of DNS TTL caching hints. Some follow TTL hints, limit it at 2 seconds, or apply their own logic.
DNS
Embrace systemd-resolved
systemd-resolved improves DNS performance with query-caching. Learn how to configure it to increase system privacy and security with DNS over TLS and DNSSEC.