KnockKnock PingPort
Port knocking & ping knocking
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Open access to your servers with one tap: KnockKnock sends the port sequence or ICMP packet sizes your firewall expects. No account, no tracking.
KnockKnock opens access to your servers with one tap. It sends the knock your firewall expects, a sequence of TCP and UDP ports or ICMP echo requests of agreed sizes, and shows each step as it goes.
PORTKNOCK
• Name, host (domain, IPv4 or IPv6) and an ordered list of ports, each TCP or UDP
• Delay between ports from 0 to 1000 ms to fit your knockd timeout
• Progress for every port, and the time of the last knock in the list
PINGKNOCK
• Ordered groups of ICMP echo requests: count × data size in bytes
• The equivalent ping commands, to try the same knock from a terminal
• A table of ICMP and IP packet sizes to match your firewall rule, such as iptables -m length or MikroTik packet-size
• A warning when VPN or cellular networks may split large packets
Works with knockd and any firewall that opens access after a sequence of packets.
PRIVATE BY DESIGN
• No account, no analytics, no ads, no tracking
• Records stay on your iPhone unless you export them, and packets go straight to the hosts you enter
FREE AND PRO
The free version keeps one PortKnock server and one PingKnock target. KnockKnock Pro, a one-time purchase, removes the limit and lets you export and import your records as a file, to move them to another iPhone. No subscription.
Port knocking hides a service but does not replace SSH keys or passwords.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• Import from knockd.conf (Pro): pick a knockd config file, enter the host and check which port sequences to add. Settings → Records → Import knockd.conf.
• Long-press a server or a ping target to edit it, no need for "Edit list".
The developer, ALEKSEI ANISIMOV, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- ALEKSEI ANISIMOV
- Size
- 4.3 MB
- Category
- Developer Tools
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
English and 4 more
- English, German, Russian, Spanish, Turkish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- KnockKnock Pro $4.99
- Copyright
- © 2026 ALEKSEI ANISIMOV