===== Access Control List (ACL) =====
[[dido:public:ra:xapend:xapend.a_glossary:start| Return to Glossary ]]


An **Access Control List (ACL)** contains rules that grant or deny access to certain digital environments. There are two types of ACLs:

  * Filesystem ACLs - filter access to files and/or directories. Filesystem ACLs tell [[dido:public:ra:xapend:xapend.a_glossary:o:os|operating systems]] which users can access the system, and what [[dido:public:ra:xapend:xapend.a_glossary:p:privileges|privileges]] the users are allowed.
  * Networking ACLs - filter access to the network. Networking ACLs tell routers and switches which type of traffic can access the network, and which activity is allowed.


Source: [[https://www.imperva.com/learn/data-security/access-control-list-acl/]]