docs: Clarify that max duration is required

website/content/docs/commands/targets/create.mdx

@@ -76,6 +76,7 @@ If you do not specify a default port, Boundary uses port 22.
 A value of `-1` means the connections are unlimited.
 - `-session-max-seconds=<string>` - The maximum lifetime of the session, including all connections.
 You can specify an integer number of seconds or a duration string.
+If you do not specfiy a maximum duration, Boundary uses the default value of 8 hours (28800 seconds).
 - `-storage-bucket-id=<string>` - The public ID of the storage bucket to associate with the target.
 - `-with-alias-authorize-session-host-id=<string>` - The host ID that an alias uses to authorize sessions for the target.
 - `-with-alias-scope-id=<string>` - The scope ID that you want to create the target and alias in.
@@ -121,6 +122,7 @@ If you do not specify a default port, Boundary uses port 22.
 A value of `-1` means the connections are unlimited.
 - `-session-max-seconds=<string>` - The maximum lifetime of the session, including all connections.
 You can specify an integer number of seconds or a duration string.
+If you do not specfiy a maximum duration, Boundary uses the default value of 8 hours (28800 seconds).
 - `-with-alias-authorize-session-host-id=<string>` - The host ID that an alias uses to authorize sessions for the target.
 - `-with-alias-scope-id=<string>` - The scope ID that you want to create the alias in at target creation time.
 The default is `global`.

website/content/docs/commands/targets/update.mdx

@@ -76,6 +76,7 @@ If you do not specify a default port, Boundary uses port 22.
 A value of `-1` means the connections are unlimited.
 - `-session-max-seconds=<string>` - The maximum lifetime of the session, including all connections.
 You can specify an integer number of seconds or a duration string.
+If you do not specfiy a maximum duration, Boundary uses the default value of 8 hours (28800 seconds).
 - `-storage-bucket-id=<string>` - The public ID of the storage bucket you want to associate with the target.
 
 
@@ -115,6 +116,7 @@ If you do not specify a default port, Boundary uses port 22.
 A value of `-1` means the connections are unlimited.
 - `-session-max-seconds=<string>` - The maximum lifetime of the session, including all connections.
 You can specify an integer number of seconds or a duration string.
+If you do not specfiy a maximum duration, Boundary uses the default value of 8 hours (28800 seconds).
 - `-worker-filter=<string>` - This option is deprecated.
 Use the egress or ingress filters instead.
 

website/content/docs/concepts/aliases.mdx

@@ -148,7 +148,8 @@ Complete the following steps to create a new target and new alias at the same ti
    Alternatively, you can configure host catalogs and host sets.
    - **Default Port**: (Optional) Enter an optional default port for the target to use for connections.
    - **Default Client Port**: (Optional) Enter an optional local proxy port on which to listen when a session is started on a client.
-   - **Maximum Duration**: (Optional) Enter an optional maximum duration for sessions on this target, in seconds.
+   - **Maximum Duration**: (Required) Enter a maximum duration for sessions on this target, in seconds.
+   If you do not enter a value, Boundary uses the default of 8 hours (28,800 seconds).
    - **Maximum Connection**: (Optional) Enter the maximum number of connections allowed per session on this target.
    For unlimited connections, enter `-1`.
    - **Workers**: (Optional) Select whether you want the worker to function as an ingress and/or egress worker.

website/content/docs/concepts/domain-model/targets.mdx

@@ -74,6 +74,7 @@ A target has the following configurable attributes:
   when a session reaches the maximum duration.
   The default is 8 hours (28800 seconds).
   This value must be greater than 0.
+  If you do not specfiy a maximum duration, Boundary uses the default value.
 
 - `with-alias-authorize-session-host-id` (Optional)
   The authorize session host ID flag that an alias uses when you create the alias at the same time as you create the target.