Network Tools

Free SSH tunnel generator. Build local (-L), remote (-R) and dynamic SOCKS (-D) port-forwarding commands with jump host, identity file and keepalive, and copy both the ssh command and an...

Searchable reference of well-known and common TCP/UDP ports. Look up any port 0-1023 plus the famous registered ports (MySQL 3306, RDP 3389, PostgreSQL 5432, Redis 6379, MongoDB 27017, WireGuard 51820)....

Detailed 2026 comparison between MikroTik RouterOS 7 and Ubiquiti UniFi OS 4 for prosumer home networks: reference stacks under 400 EUR, CLI vs UI, routing protocols, Wi-Fi roaming, VPN options,...

Complete DNS over HTTPS implementation walkthrough for sysadmins — what DoH protects, picking a provider vs self-hosting, configuring Windows / Linux / macOS endpoints, deploying unbound + dnsdist as your...

Detailed 2026 comparison between pfSense Community Edition 2.7 and OPNsense 24.7: UI, release cadence, plugin ecosystem, performance on prosumer hardware (Intel N100 benchmarks), appliances, and a per-use-case verdict with a...

Stand up a self-hosted WireGuard VPN on a 5 EUR VPS: pick split vs full tunnel, generate Curve25519 keys, write the server and client configs, wire up MASQUERADE + IP...

Probe any HTTPS URL to find out if it supports HTTP/3 and QUIC. Parses alt-svc, identifies the server software (Cloudflare, Fastly, LiteSpeed, h2o, nginx-quic, Caddy) and explains how to enable...

Detect the CDN serving any URL: Cloudflare, Fastly, Akamai, Amazon CloudFront, Azure Front Door, BunnyCDN, KeyCDN, Vercel, Netlify, jsDelivr and 15 others. Header and DNS fingerprinting in your browser.

Compare DNS records returned by Google Public DNS, Cloudflare 1.1.1.1 and the PeopleAreGeek server resolver in parallel. Detect propagation lag and TTL drift on A, AAAA, CNAME, MX, NS, TXT,...

Domain Health Check: DNS, WHOIS, SSL, HTTP, Robots and Sitemap AuditRun a complete domain health snapshot from one input: DNS records, WHOIS availability, SSL expiry, HTTP status, robots.txt sitemap discovery...