The Cacti Manual
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# Graph Permissions

Graph permissions control which graphs a user is allowed to view, it does not apply to editing graphs. You can edit a user's graph permissions by selecting User Management and choosing the user you want to edit the permissions for. Now select the Graph Permissions tab to view this user's graph permissions. There are three different ways that you can apply graph permissions, by graph, by host, or by graph template. This works by allowing or denying the user to all graphs associated with the particular group. So you can deny a user to a single graph, all graphs associated with a particular host, or all graphs associated with a particular graph template. Combining these three types of assigning graph permissions results in a very powerful graph policy editor.

Each assignment type contains a Default Policy dropdown which can be used to control whether the user should be allowed to view everything or be denied from everything by default in the particular group. It is very important to remember that these policies are evaluated in the order: graph, host, graph template. Therefore, if you set graph's default policy to Deny, but kept host and graph template at Allow, the user's effective policy would be Deny since the graph assignment type is evaluated first. You typically either want to set all default policies to Deny for a restrictive user, or Allow for a non-restrictive user. If you thoroughly understand Cacti's graph permissions system, these default policies can be combined to provide very complex results.

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