| Description | This article describes how to limit concurrent user authentication. |
| Scope | All versions of FortiOS. |
| Solution |
The same user can be used for multiple concurrent authentications. Its maximum number can be limited globally, per user-group or per user only via CLI.
Globally:
config system global set policy-auth-concurrent <number_of_max_concurrent_users> end
Per user-group:
config user group edit <group-name> set auth-concurrent-override enable setauth-concurrent-value <number_of_max_concurrent_users> next end
There is a restriction when using this with SAML Azure groups. The login limitation is managed from the Azure services instead of the FortiGate.
Per user:
config user local edit <user-name> set auth-concurrent-override enable set auth-concurrent-value <number_of_max_concurrent_users> next end
The following error message is displayed when the limit is crossed:
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