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Gitlab behind a reverse proxy

I am using GitLab for private projects. GitLab is run using the Docker image provided by GitLab. I can access my instance from outside via a reverse proxy (Apache). The setup is simple: GitLab Docker container is running on NUC and listens on port 7080 for HTTP connections NUC is Read more…

By Tobias Hofmann, 2 years2 years ago
Technology

Response for preflight does not have HTTP ok status

Issuing an AJAX request is more complex than you might think. Issue When you issue an AJAX request to a server in another domain (CORS), you may get the following error message: Response for preflight does not have HTTP ok status. Problem The server is configured to allow CORS. The Read more…

By Tobias Hofmann, 2 years2 years ago
Technology

ERR_CONTENT_DECODING_FAILED

Configuring a reverse proxy is not an easy task. It involves some trial and error and dealing with unexpected errors. One of those errors is ERR_CONTENT_DECODING_FAILED. The web site won’t load in your browser will show this error message: Error ERR_CONTENT_DECODING_FAILED may show up in your browser when a resource Read more…

By Tobias Hofmann, 2 years2 years ago
Technology

Solving reverse proxy error ERR_CONTENT_DECODING_FAILED

Configuring a reverse proxy is not an easy task. It involves some trial and error and dealing with unexpected errors. One of those errors is ERR_CONTENT_DECODING_FAILED. The web site won’t load in your browser and Chrome will show this error message: Error ERR_CONTENT_DECODING_FAILED may show up in your browser when Read more…

By Tobias Hofmann, 3 years3 years ago
Technology

Block access from country by IP in Apache

In this blog I will show how you can block access to your Apache hosted internet services, forbidding access to a whole country. The access is blocked based on the IP address of a client. In case of a VPN where the user connects to a VPN server in another Read more…

By Tobias Hofmann, 4 years4 years ago
Raspberry Pi Technology

Custom 503 error page for Apache

A 5xx error code is returned by a web server when something went wrong: The server was not able to process the request. For a reverse proxy, a common 5xx error message is 503, meaning that the backend server is not reachable. In the technical architecture of my blog site, the Read more…

By Tobias Hofmann, 4 years4 years ago
Technology

Get an A rating from SSL labs

You should secure your web site using TLS. No, that`s not a typo, it`s TLS and not SSL. SSL is dead and should not be used anymore. Praise TLS. This may sound complicated at first, but it`s not. First step is to deactivate HTTP and activate HTTPS. How to do Read more…

By Tobias Hofmann, 5 years5 years ago
Raspberry Pi Technology

Operate GateOne behind Apache reverse proxy

After installing GateOne on my Raspberry Pi 2 Debian system, I can log on to SSH via HTTP and browser. But only from my internal network, as the external accessible port is blocked by Apache. To add GateOne from outside, I either can disable Apache (no, won`t do it) or Read more…

By Tobias Hofmann, 5 years5 years ago
SAP Technology

Load test your web applications part 2 – with Apache jMeter

Note: 1st published at SCN on 19.8.2013 This blog is laying around on my hard drive for too much time. The previous version of this blog series was published over a year ago!. Originally named “Load test Web Dynpro Java with jMeter” this was actually the 1st blog of the 3 Read more…

By Tobias Hofmann, 8 years5 years ago
SAP Technology

Load test your web applications part 1.5 – Apache ab

Note: 1st published on SCN on 11.6.2012 With ab, for Web Dynpro applications In my blog about performance load testing with ab SAP Mentor Anton Wenzelhuemer raised a question if and how you can use ab to test a specific action/event in WD applications. That’s a good question as these Read more…

By Tobias Hofmann, 9 years5 years ago

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