# Configuring user access control in CTA

- Institution: CERN
- Department: HEP Computing
- Speaker: Volodymyr Yurchenko
- Year: 2022
- Language: English
- Subjects: Computer science
- Source: [CERN](https://videos.cern.ch/record/3009134)
- Licence: [CERN](http://copyright.web.cern.ch)
- Who can watch: Tweens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

CTA uses access mechanism provided by EOS and adds tape-specific layer. If one of these elements is misconfigured, a user won't be able to read a file, or, on the contrary, unauthorized access can be granted.

This talk explains how the combination of the ACL, Unix permissions and mount rules works in CTA. We show which tools we use for the permissions management and what are capabilities and limitations of our system..

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## Lectures

1. [Configuring user access control in CTA](https://invisiblenetwork.ai/learn/cern/3009134/e5d3ca687a45), 19 min (CERN's player)