How to implement proxying Atlassian server applications with IIS on Windows Server 2022?

Iver Grini August 28, 2023

I am trying to implement proxying Atlassian server applications (Jira, Confluence and Bitbucket) with IIS on Windows Server 2022 following the documentation:

Proxying Atlassian server applications with Microsoft Internet Information Services (IIS) | Atlassian Support | Atlassian Documentation

However, the Web Platform Installer referred to in the documentation was retired in 2022 and is no longer available. As a result I'm unable to follow the configuration steps described.

Does anyone have any experience with configuring proxying on IIS 10 on Windows Server 2022? (without the Web Platform Installer)
Can the individual components be downloaded and installed manually in some order for it to work?
Can proxying be implemented in a different manner in IIS 10 without having ARR, URL rewrite and Request Filtering installed as separate components (es described in the documentation)?

-or is use of IIS no longer an option for this configuration......

Any and all feedback appreciated :-)

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Iver Grini August 30, 2023

Turns out the required components can be installed manually.
Installed AAR and URL Rewrite on the server using standalone installers.

Downloaded the installers from Microsoft here:

ARR depends on URL Rewrite. Ensure URL Rewrite is installed prior to installing ARR.

Did the configuration for a Confluence instance first. Everything looked ok until I tried installing plugins. Some plugins were installed successfully while one failed with and unexpected error. Turns out that this was linked to the requestFiltering configuration in IIS. Added tag <requestLimits maxAllowedContentLength="2147483648" /> to <requestFiltering> in web.config for the corresponding site in IIS to allow handling of bigger files. This resolved the plugin installation issue.

The information on the following site was also usefull when configuring the reverse proxy:
Confluence Behind IIS Reverse Proxy — Cormang.com

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