Port Authority - Port Scanner

Name: Port Authority - Port Scanner
Rating: 4.02 (1344 reviews)
Author: Aaron Wood

Fast, accurate TCP scanner with host discovery, WoL, and DNS lookups.

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Port Authority is a high-speed, accurate TCP port scanner designed for both system and security professionals. It delivers lightning-fast results with heavily threaded scanning, enabling LAN host discovery and displaying comprehensive network details including public IPs and MAC address vendors.

Key features include custom port range scanning, lightweight service fingerprinting for protocols like SSH and HTTP(S), DNS record lookups supporting nearly every record type, and Wake-on-LAN for LAN devices. Optimized for speed and efficiency, it supports adjusting thread usage to accommodate any hardware capabilities. This open-source Chrome extension ensures effective network insight, rapid scanning, and detailed device information, making it an essential tool for network administration and security auditing.

App

By:: Aaron Wood
Downloads:: 395,076 92
Rating:: 4.02

(1,344) 1 new ratings
Version:: 2.4.5-free Last updated: 2022-09-11
Creation date:: 2015-01-03
Email:: aa*****@gmail.com
URLs:: Website ,Privacy policy
Full description:: See detailed description
Source:: Google Play Store
Data ingested on:: 2025-07-12

Ranking

# 100,386 ▼ 187

User reviews

Users appreciate Port Authority for its speed, simplicity, and helpfulness in scanning local networks and identifying devices. However, common issues include a frustrating port range selection interface, failure to save discovered hosts info, obsolete database updates causing lookup errors, occasional crashes on newer Android versions, and limited network scanning scope (no Ethernet scanning). Despite these problems, the app remains a useful tool, and the developer is commended for responsiveness.

Pros

Fast and effective network scanner for LAN devices.
Provides useful information about connected devices, such as vendor details.
Simple, straightforward user interface with no unnecessary features.
Helpful for network security awareness and troubleshooting.
Developer is responsive and knowledgeable.

Cons

The app's port range selection interface is cumbersome, requiring scrolling through thousands of ports instead of direct input, leading to poor user experience.
Host information and discovered data are not saved, limiting functionalities like Wake-On-LAN.
Database lookups for OUI and IANA fail to update due to 404 errors, affecting accuracy.
App crashes on some Android versions (e.g., Android 11) especially after updates.
No option to scan Ethernet connections; limited to Wi-Fi only.

Recent reviews

probably the fastest scanner, but lacks the possibility to change the interface. E.g. if I want to scan a vpn

Ha*****, 2024-07-17

This app has been a cool resource for securing my home network and opening some eyes at various workplaces I've worked at. However very recently the OUI and IANA port database updates fail with a 404 message. The app still works well but you have to do your own homework now. Maybe Aaron can take a look?