Network Tools: Net Toolkit

A network engineer's toolkit that runs entirely on your iPhone. Seventeen tools, no account, no server of ours, and nothing about you collected.

THE TOOLS
• Ping — ICMP latency and packet loss, with a live chart
• Traceroute — the hop-by-hop path, each router named
• LAN scan — every device on your subnet, named and identified: routers, NAS boxes, printers, Macs, phones
• Port scan — TCP connect scan with banners and service names, from a handful of ports to all 65535
• DNS — your own wire-format resolver: every record type at once, any public resolver you choose, DNS-over-HTTPS, reverse lookups, and a comparison mode that queries five resolvers and flags the one that disagrees
• HTTP check — status, redirect chain, the DNS/connect/TLS/TTFB split, security headers
• TLS — the full certificate chain, expiry, SANs, cipher suite, and whether the system trusts it
• WHOIS — the referral chain followed to the registrar that actually holds the record
• Wi-Fi — link quality graded against local thresholds, and a walking survey that compares rooms
• Speed test — download, upload, latency and jitter, against Cloudflare or a URL you name
• iperf3 — throughput against your own iperf3 server, up or down, multi-stream
• IP calculator — CIDR maths, masks, host ranges, binary, and subnet division including VLSM
• MAC lookup — 39,000 vendor prefixes, bundled and fully offline
• Wake on LAN — the magic packet, sent to every address that might reach a sleeping machine
• Network interfaces — addresses, subnets, flags and live throughput
• Telnet — a raw TCP terminal for switches, PDUs and console servers
• SSH — see below

A REAL SSH CLIENT
Not a wrapper. The protocol is implemented in Swift, and it does the things you actually need from a phone:
• Jump hosts — reach a machine behind one bastion or several, each hop with its own account, its own credential and its own host key to confirm
• Port forwarding — bind a local port to a service on the far side, then open it in a browser inside the app: a router's web interface, a database, a dashboard listening only on the server's loopback
• scp — send a file up or pull one down, straight to the Files app
• ssh-copy-id — put your public key in a server's authorized_keys without a second terminal
• Keys — generate ed25519 on the device, or import ed25519, ECDSA and RSA in OpenSSH or PEM form, protected or not. Private keys live in the Keychain and can be exported under a passphrase when you need them elsewhere
• Snippets — the commands you always type, one tap above the keyboard
• A proper terminal — a real VT/xterm emulator, so vim and htop work, with esc, ctrl, alt, arrows and F-keys on a row of their own