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Cisco 3900 Series, Cisco 2900 Series, and Cisco 1900 Series Integrated Services Routers Generation 2 Software Configuration Guide
Chapter       Configuring Identity Features on Layer 3 Interface
Preauthentication Access Control List
Verifying Authentication Control-Direction Setting-in
Use the show authentication sessions and show dot1x commands to verify the authentication 
control-direction setting-in:
c1921#show authentication sessions interface gi0/1
            Interface:  GigabitEthernet0/1
          MAC Address:  0201.0201.0201
           IP Address:  Unknown
            User-Name:  testUser1
               Status:  Authz Success
               Domain:  DATA
       Oper host mode:  single-host
     Oper control dir:  in
        Authorized By:  Authentication Server
           Vlan Group:  N/A
         AAA Policies:  
      Session timeout:  N/A
         Idle timeout:  N/A
    Common Session ID:  030303030000000C00310024
      Acct Session ID:  0x0000000F
               Handle:  0x8C00000D
Runnable methods list:
       Method   State
       dot1x    Authc Success
c1921#show dot1x interface g0/1                   
Dot1x Info for GigabitEthernet0/1
-----------------------------------
PAE                       = AUTHENTICATOR
PortControl               = AUTO
ControlDirection          = In
HostMode                  = SINGLE_HOST
QuietPeriod               = 60
ServerTimeout             = 0
SuppTimeout               = 30
ReAuthMax                 = 2
MaxReq                    = 2
TxPeriod                  = 30
Preauthentication Access Control List
When Open-Access is installed, we recommend that a default port access control list (ACL) is 
configured on the authenticator. The ACL allows the end point to get a minimum access to the network 
to get its IP Address and running.
Configuring the Preauthentication Access Control List
For information about preconfiguring ACL, see:
http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12-2SY/configuration/guide/sy_s
wcg/port_acls.html#wp1039754