- Configuring Authentication
- RADIUS Change of Authorization
- CWA URL Redirect support on C891FW
- Message Banners for AAA Authentication
- AAA-Domain Stripping at Server Group Level
- AAA Double Authentication Secured by Absolute Timeout
- Login Password Retry Lockout
- Throttling of AAA RADIUS Records
- MSCHAP Version 2
- Define Interface Policy-Map AV Pairs AAA
- RADIUS Packet of Disconnect
- MAC Authentication Bypass
- Standalone MAB Support
- AAA Authorization and Authentication Cache
- Configuring Authorization
- Configuring Accounting
- AAA Broadcast Accounting-Mandatory Response Support
- AAA Dead-Server Detection
- AAA-SERVER-MIB Set Operation
- Per VRF AAA
- AAA Support for IPv6
- TACACS+ over IPv6
- Token Authentication
- Secure Reversible Passwords for AAA
Authentication, Authorization, and Accounting Configuration Guide, Cisco IOS Release 15M&T
- Updated:
- January 26, 2018
Chapter: Standalone MAB Support
Standalone MAB Support
Standalone MAC Authentication Bypass (MAB) is an authentication method that grants network access to specific MAC addresses regardless of 802.1X capability or credentials. As a result, devices such as cash registers, fax machines, and printers can be readily authenticated, and network features that are based on authorization policies can be made available.
Before standalone MAB support was available, MAB could be configured only as a failover method for 802.1x authentication. Standalone MAB is independent of 802.1x authentication.
- Finding Feature Information
- Information About Configuring Standalone MAB
- How to Configure Standalone MAB Support
- Configuration Examples for Standalone MAB Support
- Additional References
- Feature Information for Standalone MAB Support
Finding Feature Information
Your software release may not support all the features documented in this module. For the latest caveats and feature information, see Bug Search Tool and the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the feature information table.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Information About Configuring Standalone MAB
Standalone MAB
MAC Authentication Bypass (MAB) uses the MAC address of the connecting device to grant or deny network access. To support MAB, the RADIUS authentication server maintains a database of MAC addresses for devices that require access to the network. MAB generates a RADIUS request with a MAC address in the Calling-Station-Id (attribute 31) and with a Service-Type (attribute 6) 10. After a successful authentication, the Auth Manager enables various authorization features specified by the authorization policy, such as ACL assignment and VLAN assignment.
How to Configure Standalone MAB Support
Enabling Standalone MAB
Ports enabled with the Standalone MAB feature can use the MAC address of connecting devices to grant or deny network access. Perform the steps described in this section to enable standalone MAB on individual ports.
Before you can configure standalone MAB, the device must be connected to a Cisco Secure ACS server and RADIUS authentication, authorization, and accounting (AAA) must be configured.
 Note | Standalone MAB can be configured on devices with switched ports only; it cannot be configured on devices with routed ports. |
Note | If you are unsure whether MAB or MAB Extensible Authentication Protocol (EAP) is enabled or disabled on the switched port, use the default mabor default mab eap commands in interface configuration mode to configure MAB or MAB EAP. |
1.
enable
2.
configure
terminal
3.
interface
type
slot
/
port
4.
switchport
5.
switchport
mode
access
6.
authentication
port-control
auto
7.
mab
8.
end
DETAILED STEPS
Troubleshooting Tips
The following commands can help troubleshoot standalone MAB:
debug authentication
debug mab all
show authentication registrations
show authentication sessions
show mab
Configuration Examples for Standalone MAB Support
Example: Standalone MAB Configuration
The following example shows how to configure standalone MAB on a port. In this example, the client is reauthenticated every 1200 seconds and the connection is dropped after 600 seconds of inactivity.
Device> enable Device# configure terminal Device(config)# interface GigabitEthernet 1/2/1 Device(config-if)# switchport Device(config-if)# switchport mode access Device(config-if)# switchport access vlan 2 Device(config-if)# authentication port-control auto Device(config-if)# mab Device(config-if)# authentication violation shutdown Device(config-if)# authentication timer restart 30 Device(config-if)# authentication periodic Device(config-if)# authentication timer reauthenticate 1200 Device(config-if)# authentication timer inactivity 600
Additional References
Related Documents
|
Related Topic |
Document Title |
|---|---|
|
Cisco IOS commands |
|
|
Authentication commands |
Cisco IOS Security Command Reference |
|
IEEE 802.1x—Flexible Authentication |
Securing User Services Configuration Library |
MIBs
|
MIB |
MIBs Link |
|---|---|
|
To locate and download MIBs for selected platforms, Cisco IOS software releases, and feature sets, use Cisco MIB Locator found at the following URL: |
RFCs
|
RFC |
Title |
|---|---|
|
RFC 3580 |
IEEE 802.1x Remote Authentication Dial In User Service (RADIUS) |
Technical Assistance
|
Description |
Link |
|---|---|
|
The Cisco Support and Documentation website provides online resources to download documentation, software, and tools. Use these resources to install and configure the software and to troubleshoot and resolve technical issues with Cisco products and technologies. Access to most tools on the Cisco Support and Documentation website requires a Cisco.com user ID and password. |
Feature Information for Standalone MAB Support
The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.|
Feature Name |
Releases |
Feature Information |
|---|---|---|
|
Standalone MAB Support |
12.2(33)SXI 15.2(2)T |
This feature grants network access to devices based on MAC address regardless of 802.1x capability or credentials. The following commands were introduced or modified: authentication periodic, authentication port-control, authentication timer inactivity, authentication timer reauthenticate, authentication timer restart, authentication violation, debug authentication, mab, show authentication interface, show authentication registrations, show authentication sessions, and show mab. |
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