VPN
Why Some Websites Block VPNs
Websites block VPN traffic for licensing compliance, fraud prevention, abuse control, and regional-rules reasons — rarely as a blanket anti-privacy stance.
Network Privacy, IP & Security Guides
Practical explanations and diagnostic steps for IP reputation, VPN and proxy risks, DNS, WebRTC, IPv6 and safer internet connections.
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Proxy
Rotating Proxies: What Rotation Does—and Does Not—Solve
Rotating proxies change your apparent IP address between requests or on a schedule — useful for avoiding rate limits, but rotation alone doesn't hide behavioral patterns that remain visible across the switch.
DNS
Public DNS Resolvers: Benefits and Tradeoffs
Public DNS resolvers trade the convenience of your ISP's default for potential gains in speed, privacy policy, and encryption support — with tradeoffs in filtering behavior and jurisdiction worth weighing.
WebRTC
WebRTC STUN Explained
STUN servers let a browser learn its own public-facing address for connection setup — a narrow, specific job that doesn't relay the actual call media itself.
IPv6
Dual Stack Explained
Dual-stack means a connection runs IPv4 and IPv6 simultaneously, with the operating system choosing between them per-connection — a coexistence strategy, not a transitional phase that's about to end.
Privacy
Browser Fingerprinting: Identification Without a Cookie
Browser fingerprinting identifies you through the combination of many ordinary browser characteristics, not any single trait — uniqueness comes from the combination, which is why it works even without cookies.
Network Security
TOR Exit Node Detection
Tor exit nodes are publicly listed and straightforward to detect — the harder decision is choosing a proportionate policy that accounts for legitimate privacy use rather than blanket blocking.
AI Access
Claude IP Address Requirements: Facts vs Assumptions
Publicly available information describes general regional availability — specific claims about IP address type or score thresholds affecting access are not officially documented and shouldn't be treated as fact.
IP Address
IP Address Classes: Useful History, Limited Modern Relevance
Class A, B and C address ranges were the internet's original allocation system — mostly retired in favor of CIDR, but still useful context for reading how address blocks are described.
IP Reputation
Residential IP Reputation Is Not Automatically Clean
Residential classification describes network ownership, not current cleanliness — a residential address inherits whatever history is attached to it, including from a previous occupant.
VPN
VPN Location Mismatch: Why Your IP, DNS, and Browser Disagree
A location mismatch between your IP, DNS resolver, and browser settings has a handful of common, checkable causes — worth working through in order rather than guessing.
Proxy
Static Residential Proxies Explained
Static residential proxies combine an ISP-registered address with session stability — a narrower, sometimes ambiguously-named category worth understanding precisely before assuming what a provider means by the term.