Selecting Configuration>Serial/AUX>Physical Ports in Expert Mode, selecting one or more serial ports, and then selecting the Access tab, brings up a screen like the one shown in the following figure.On the Access screen under Configuration>Serial/AUX>Physical Ports in Expert mode, an administrative user can perform the tasks shown in the following table.
Tasks Performed Using the Serial/AUX> Physical Ports>Access Screen Restrict access to a serial port by specifying one or more users or groups (and thereby excluding all others) or by denying access to one or more users or groups The default is all users have access. See “To Configure User Access for One or More Serial Ports [Expert]” on page 200 Choose an authentication type for the serial port from the following pull-down list. The default is no authentication (authentication type=None). See OnSite Authentication Options, if needed for more details. For the procedure, see “To Configure an Authentication Method for Logins Through a Serial Port [Expert]” on page 201.Access can be denied to one or more users or groups by entering an exclamation point (!) before the user or group name. For example, to explicitly deny access to a user called “noadmin,” and enable access only to a single user called “manuel,” you would enter the following:Use this procedure if you want to specify a list of authorized users or groups and deny access to all other users and groups.
1. Go to Configuration>Serial/AUX>Physical Ports in Expert mode, and select a port or ports to modify.
3. To restrict access to one or more users or to a group of users, enter previously defined user or group names in the “Authorized Users/Groups” field, with the names separated by commas.
4. To deny access to one or more users or groups, preface the user or group names with an exclamation point (!).To Configure a Serial Port Authentication Method [Expert]This procedure configures an authentication method that applies to logins to serial ports. Different methods can be selected for individual ports or for groups of ports.
1. Go to Configuration>Serial/AUX>Physical Ports in Expert mode, and select a port or ports to modify.The changes are stored in /etc/portslave/pslave.conf on the OnSite.
6. Make sure that an authentication server is specified for the selected authentication type.See Tasks for Setting up Authentication Servers for Each Authentication Method for links to the procedures that apply to each authentication method.