13. FAQs

13.1. It seems that events are not visible or have been lost. What can I do to verify that they’re still in the database?

First, check your date range picker.

Very often, analysts forget to set it to the right time frame and old events accidentally disappear from the view.

Secondly, make sure you’re using the search in the Events section and not the Baselining section.

13.2. I have created a case but it seems that no new incoming events are assigned to that existing case. How can I check what’s wrong?

The first thing that you should check are the auto_case_ids of the events in that case (Cases > Open Case > Events > auto_case_id Panel).

If they are distributed as in the following screenshot, it seems that auto-casing doesn’t work on this case.

Auto Case ID

This case doesn’t have groupable contents and uses only so-called "Dynamic Auto Case IDs", which are used whenever the Analysis cockpit was unable to find a suitable filter template to create usable filters for this type of events.

Also check the grouping criteria of that case:

Cases > Open Case > Tab Grouping Criteria

What are the conditions defined to assign new events to that case?

13.3. What is the password used to protect file downloads?

Artefacts uploaded to a case might be malware. To ensure the file is not automatically deleted by antivirus or executed by an unknowing user, we zip all files in the attachments and encrypt the ZIP file with a default password. The default password infected can be used to extract the file.

13.4. My disk is getting full soon. What options do I have?

If your disk is already at or close to 100% and AC no longer works properly, see section Recover from a Full Disk.

In other cases check section Regain Disk Space.

13.5. I am using a Reverse Proxy to access the Analysis Cockpit. What do I have to take care of?

The Analysis Cockpit partially uses large URLs to communicate with its backend. Proxy server usually do not allow arbitrary large URLs.

In case of nginx the default header size is 8k (see http://nginx.org/en/docs/http/ngx_http_core_module.html#large_client_header_buffers). If you want to use the Analyst Cockpit behind a nginx reverse proxy, you need to increase the large_client_header_buffer. A size of 100k should be sufficient. Also the HTTP2 protocol has to be disabled.

A minimal example configuration for nginx looks as follows:

server {
   listen 443 ssl; # !! no http2 !!
   ssl_certificate /path/to/your/certificate.crt;
   ssl_certificate_key /path/to/your/private.key;
   location / {
      proxy_pass https://analysis-cockpit.your.org;
      proxy_set_header Host $http_host;
      proxy_set_header X-Real-IP $remote_addr;
      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
   large_client_header_buffers 4 100k; # increase maximal allowed URL length

13.6. I am using Internet Explorer and the Analyst Cockpit seems to run into a timeout. What can I do?

Modern browsers (e.g. Firefox, Chrome, Edge, Safari) support large URLs. Internet Explorer does not. If you want to access the Analyst Cockpit and all its features, you need to switch your browser.