MAC authentication using local list HowTo

Introduction

This document describes a setup of MAC authentication using a local MAC accept list to authorise MAC addresses. For an overview of all available configuration settings for Port Access refer to the configuration section in the Port Access Guide.

Overview

For an overview of all available configuration settings for Port Access Control, refer to the configuration section in the Port Access Control Guide.

Overview

Below is the topology of the devices in this setup.

                                        |
                                      .--.-. 
                                     ( (    )__
                                   (_,  \ ) ,_)
                                     '-'--`--'
                                        | GW 10.0.2.1
                                        |    VLAN 2
                                        |    10.0.2.0/24
                                        | 10.0.2.2
 Authenticator  .--+------+------+------+--.
(Switch/Router) |  5      6      7      8  | 
with Accept-List|           WeOS           | 
   10.0.1.1     |  1      2      3      4  | 
                '--+------+------+------+--'
                   X      X      X      X  <== Controlled Ports
                   |    VLAN 1              (All Blocked by
                   |    10.0.1.0/24          Authenticator)
                .--+-.
                | H1 | (Host/Supplicant)
                '----' IP 10.0.1.43/24
                       GW 10.0.1.1

Figure 1: A basic setup of port access control using MAC Authentication. Ports eth1-eth4 are controlled. Here ports eth1-eth7 are on VLAN 1 and eth8 is on VLAN 2, but they could be on the same VLAN.

Configuration

First VLANs and IP addresses of the WeOS router is configured, see Figure 1 above. It is assumed that all ports are assigned (untagged) to VLAN 1 from start. For more information, see VLAN configuration.

example:/#> config
example:/config/#> vlan 2
example:/config/vlan-2/#> untagged eth8
example:/config/vlan-2/#> end
example:/config/#> iface vlan1
example:/config/iface-vlan1/#> no inet
example:/config/iface-vlan1/#> inet static 10.0.1.1/24
example:/config/iface-vlan1/inet-static-10.0.1.1/#> end
example:/config/iface-vlan1/#> end
example:/config/#> iface vlan2
example:/config/iface-vlan2/#> inet static 10.0.2.2/24
example:/config/iface-vlan2/inet-static-10.0.2.2/#> end
example:/config/iface-vlan2/#> end
example:/config/#> ip
example:/config/ip/#> route default 10.0.2.1
example:/config/ip/#> leave
example:/#> 

A MAC authentication list configured. This is done in the AAA context.

example:/config/#> aaa
example:/config/aaa/#> mac-auth 1
example:/config/aaa/mac-auth-1/#> mac match 00:80:c8:3c:25:b8 description "My PC"
example:/config/aaa/mac-auth-1/#> leave
example:/config/#> leave
example:/#>

See MAC match Settings for more information on how to configure a MAC authentication list.

With a MAC authentication list created, enabling MAC Authentication on ports eth1-eth4 can be done as follows.

example:/config/#> port-access
example:/config/port-access/#> port eth1..eth4
example:/config/port-access/#> description "Site A"
example:/config/port-access/#> mac-authentication
example:/config/port-access/dot1x/#> accept-list 1
example:/config/port-access/dot1x/#> leave
example:/#> 

Status

Port access status can be shown by issuing show port-access in the admin context.

example:/#> show port-access 
PORT ACCESS                                                               
Status                  : Enabled
Description             : Site A
Ports                   : eth1..eth4 
802.1X                                                                    
Not configured.
MAC AUTHENTICATION                                                        
  Status                : Enabled
  Authentication server : 1 (Site A)
  Local list            : Not set

MAC (MAC Auth)      STATUS          AUTH METHOD      PORT                 
00:80:c8:3c:25:b8   authorized      accept-list      eth1

RECENT EVENTS (AUTH.LOG)                                                  
Nov 22 18:40:21 example macd[2200]: Auth successful for 00:80:c8:3c:25:b8 on eth1

example:/#>