xhost

Manage access control lists for X server connections. More information: https://manned.org/xhost.

• Display the current access control list:

xhost

• Allow a specific host to connect to the X server:

xhost +{{hostname}}

• Deny a specific host from connecting to the X server:

xhost -{{hostname}}

• Allow all hosts to connect (disable access control - insecure):

xhost +

• Deny all hosts except those explicitly allowed (enable access control):

xhost -

• Remove a specific user or address using a family prefix (like inet:hostname or si:localuser:username):

xhost -{{family:name}}