This utility app allows you to remotely open firewall ports on your server using a saved sequence of connection attempts from your iPhone. It supports TCP or UDP for each port and provides live feedback on the connection status.





0+ iOS apps & games curated and reviewed
Every iPhone needs a few good port knocking apps and games. We benchmark 0+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | 5.0★ (1) | No | No | Jul 2026 | ||
| 2 | $0.99 | 5.0★ (8) | No | No | Jun 2026 | ||
| 3 | Free | — | No | No | May 2026 | ||
| 4 | Free | 4.6★ (4.8K) | Yes | Yes | Oct 2026 | ||
| 5 | Free | 2.8★ (6) | Yes | No | Aug 2026 | ||
| 6 | Free | 4.3★ (252) | No | No | Sep 2026 | ||
| 7 | Free | — | No | Yes | May 2026 | ||
| 8 | Free | — | No | No | May 2026 |





This utility app allows you to remotely open firewall ports on your server using a saved sequence of connection attempts from your iPhone. It supports TCP or UDP for each port and provides live feedback on the connection status.




This utility allows network administrators to send custom port knock sequences to servers. It requires a port knock daemon on the server and offers features like password protection, knock validation, and host management.
