PortChecker

PortChecker is a simple tool that tests the connection to various servers of the software distribution. It can be run on a local computer without installation. It can quickly identify problems with firewalls and network connections.

Downloads

The Linux version is compiled for Ubuntu 24.04; the macOS versions can be installed, but they can also be launched directly from the image without installation.

Instructions

When the program starts, it downloads the current list of ports to be tested from the server. If this fails, a fixed, internal, very short list is loaded.

After clicking “Check Server,” all connections in the list are checked, and the results are displayed accordingly. Technically, only the connection establishment is checked. It is not possible to verify the accuracy of the data. The timeout is set to 500 ms, which is relatively short, so that the list can be processed quickly in the event of an error. Therefore, incorrect information may be displayed for slow (VPN) connections.

The tool is designed for quick testing by end users and can detect simple firewall issues. Normally, all connections should be successful, with the exception of KMS activation, which is only available for ten minutes after activation.

History

0.9.9

Compiled for current operating systems (macOS 25.3, Ubuntu 24.04), new toolchain, deb package for Ubuntu, ARM version for macOS

0.9.4

compiled for current operating systems

0.9.2

Version control with download link, advanced portlist download

0.9.1

First release