PortKnock vs Network Analyzer Pro

-- Overview -- PortKnock is a port knocker for iPhone and iPad, built for network administrators, homelabbers, and anyone who keeps services hidden behind a firewall. Save your knock sequences once, then send them with a tap, a Siri request, or a Shortcut. It also runs on Apple silicon Macs. PortKnock is NOT a hacking tool, a port scanner, or a general network scanner. It only sends knocks to servers that you own or administer. You *must* have a port knock daemon (such as knockd) or a compatible router running on your server for this app to be useful. -- Features -- - Siri and Shortcuts: "PortKnock _name_" or "Knock _name_ with PortKnock" - Unlimited Knocks, each with any number of ports - TCP or UDP per port, with optional UDP payloads - Post-knock actions: launch an app or URL, send a webhook, or check that a TCP port opened - IPv4 and IPv6, including hosts with multiple addresses and per-address status - Shows your external IP address - Configurable interpacket delay - Backup, restore, and move devices with import preview and conflict resolution - Migrates Knocks from PortKnock 4 - Custom symbols and colors, search, and reorder - Dark mode - DrayTek TOTP knocks (scan a QR code or enter your secret) - Has no advertising -- Use Cases -- Secure remote access: open a firewall port for SSH, VPN, or remote desktop only when you need it. Automation: knock, confirm the port opened, then launch your SSH client or call a webhook, all from one tap or one Siri request. This app is ideal if you're on a WiFi network but don't have a port knocker on the available computers. If you're sitting behind a NAT, your iPhone will have the same IP as any of the other computers on your network. -- Brief Description of Port Knocking for the Layman -- Port Knocking is a technique to secure services behind a firewall until a specific knock sequence is given. This is not to be confused with port scanning (a network management tool for discovering open services on a system). Imagine you left your kids at home alone. You don't want them to open the door for strangers. And when a stranger comes knocking, you don't even want them to come to the door, because you don't want them to know your kids are there. But, when you or other family members come, you might want them to open the door for you. So you teach them to listen for a certain rat-a-tat-tat or special knock that only you and your family know. This is the same concept you can apply to your servers. If you run a knock daemon on your server, this app then lets you send the special knock to it. Port knocking adds a layer of obscurity but does not replace strong authentication, so use it alongside SSH keys, strong passwords, and your firewall. More on Wikipedia: http://en.wikipedia.org/wiki/Port_knocking -- Additional Info -- If you're in need of a knock server, I personally use Judd Vinet's knock daemon for linux. It's quite easy to use: http://www.zeroflux.org/projects/knock -- Notes -- - Requires iOS 26 or later. - Launch actions are limited by what the target app supports through URLs. - PortKnock no longer records network history. The in-app Password Lock was removed; use iOS app locking instead. - TOTP secret keys are kept in the Keychain and are not included in backups. -- Support -- For better support, please send bug reports and feature requests to support@sungheroes.com, rather than simply posting it in a review. You can find more info on using PortKnock at the main website: http://www.sungheroes.com/products/portknock-iphone/ -- History -- 2026-10-19 5.0.0: Rebuilt for modern iOS. Siri/Shortcuts, post-knock actions, backup/restore, TOTP 2022-02-28 4.18: Launch App works again; import fixes 2018-01-xx 4.12: IPv6 support 2017-09-xx 4.0: Updated for iOS 10.3 2011-07-10 3.0: Password lock, knock validation, import/export, app launcher, progress screen 2010-12-14 2.02: Copy hosts, host/port reordering

Network Analyzer Pro is a complete network toolkit that turns your iPhone or iPad into a powerful diagnostic instrument. Whether you are troubleshooting a slow connection, tracking down unknown devices, or exploring how the internet routes your traffic, it puts professional-grade tools right in your pocket - no desktop or extra hardware required. Discover every device on your LAN, watch your traceroute unfold on a world map, measure your real download and upload speeds, work out any subnet with the IP calculator, and diagnose any host with ping, traceroute, port scanning, DNS lookup, and whois. From home users to IT professionals, Network Analyzer Pro delivers everything you need in one polished app. LAN scanner: - Fast and reliable detection of all devices on Wi-Fi, VPN, and personal hotspot networks - IP addresses, MAC addresses, and vendors of all discovered devices - NetBIOS, mDNS (Bonjour), LLMNR, DNS, SNMP, and WS-Discovery names - Reachability (ping) test, IPv6 availability, and IPv6 addresses - Custom device names and vendors, scan history, and favorites - Quick actions: open the web interface, browse Bonjour and UPnP services, or wake the device - Wake on LAN (WOL) including remote WOL - Scan of custom IP ranges, filtering, and search in the device list Ping & traceroute: - Round-trip delay, IP address, and hostname for every node - Selectable ICMP, UDP, and TCP ping and ICMP/UDP traceroute probes - Configurable probe delay, payload size, TCP port, and don't-fragment flag - Audible ping - Geolocation (latitude, longitude, country, city, time zone), AS number, and network name - Complete traceroute visualization on the map - Real-time graphical ping statistics Port scanner: - Scan common ports, custom ranges, or the complete port range - Detection of closed, firewalled, and open ports - Descriptions of known port services - Editable common port list and adjustable scan rate Whois: - Look up domains, IP addresses, and AS numbers - Classic whois and the modern RDAP protocol, with custom servers DNS lookup: - Functionality similar to nslookup or dig - Query all record types at once or a single type - A, AAAA, CAA, CNAME, HINFO, LOC, MX, NAPTR, NS, PTR, SOA, SPF, SRV, SSHFP, and TXT records - DNSSEC records: DNSKEY, CDNSKEY, RRSIG, NSEC3PARAM, NSEC, NSEC3, DS, CDS, TLSA - Custom DNS server and port, no-recursion option, all response sections Internet speed: - Download, upload, and server latency measurement - Graphical speed test view - History with full results including graphs, custom names, and notes IP calculator: - Details about any IPv4 or IPv6 address, range, or subnet - Network, broadcast, masks, address count, type, class, IANA block, reverse DNS, supernet, subnet splitting, membership test - Binary, decimal, hex, and IPv6 forms (expanded, 6to4, NAT64, Teredo, EUI-64) MAC address browser: - Vendor lookup (IEEE MA-L, MA-M, MA-S), address type, administration, SLAP quadrant, and known use - Custom name and vendor assignment used throughout the app Network information: - Default gateway, DNS server, HTTP proxy, external IP (v4 and v6) with hostname, AS number, and AS name - Wi-Fi details: SSID, BSSID, router vendor, security type, IP address, and subnet mask - VPN, USB Ethernet, and personal hotspot connection details - Cell network type, with dual SIM support - Wi-Fi, cell, and VPN data usage since the last boot Local service discovery: - Bonjour and UPnP/DLNA browsers Siri, Shortcuts, and controls: - Siri, Spotlight, and Shortcuts app support for every tool - Control Center, Lock Screen, and Action button controls - Share extension: query any website from Safari - Home screen quick actions More: - No ads - Light and dark theme - Full IPv6 support everywhere, with selectable IPv4/IPv6 - History of all performed tasks, with favorites - Export by email, AirPrint, and AirDrop - Copy/paste support - Detailed help - Regular updates