By default, the phone does not perform its own 802.1X authentication nor does the phone allow pass-through of EAPOL packets nor does it perform automatic logoff of PC-port attached clients. All of these options must be turned on.
For D6x phones, it is recommended to use firmware 2_7_0 or greater. Versions prior to this may experience problems when validating certificate start dates.
D80 model phones do not currently support 802.1X authentication.
Older versions of phone firmware did not validate the certificate of the authentication server unless the 8021x_root_cert setting was invoked. The old versions also allowed separate downloads of 802.1X Root CA, Client Certificate, and Client Key. The old versions also required combination of client certificates and client keys into the same file.
<certs> <cert id="1" label="my-root-ca" md5="abc123">MIIE3...ABC</cert> <clientcert id="1" label="my-8021x-client-cert" md5="abc123">MIIF3...DEF</clientcert> <clientkey id="1" label="my-8021x-client-key" type="RSA" md5="abc123">MIIG3...GHI</clientkey> </certs>
To configure EAP-MD5 for the phone, users should set the following:
With this method set, a user must supply their username, an anonymous identifier (which can be the special-case literal PHONE_MAC the causes the phone to send its own MAC address as the anonymous identifier), and their password. Some systems may require the regular username to be transmitted as the anonymous identifier.
802.1X Pass-through and EAPOL Auto-Logoff
To configure pass-through, users should set:
By default, these values are zero, meaning that pass-through is blocked and no auto-logoff occurs. When pass-through is enabled, the phone will allow EAPOL packets to traverse the switch (from the PC port-attached device to the upstream LAN port-attached ethernet switch). When EAPOL disconnect is enabled, the phone will keep a record of the MAC addresses of all devices that it sees sending EAPOL events from the PC port to the LAN port and will, when the PC port-attached device drops link, send an EAPOL Logoff message to the upstream authenticator on-behalf of the device, impersonating its MAC.
To configure EAP-PEAPv0/MSCHAPv2, users should set:
This sets the method to EAP-PEAPv0/MSCHAPv2 and passes in the supplied username and password.
To configure EAP-TLS, users should set:
EAP-TLS requires an identity, a client certificate and a client key, as well as validation of the server's Root CA. The client certificate and client key should be in-lined in the phone's config using the clientcert and clientkey configuration parameters. If the authentication server does not have a valid, publicly-signed certificate, an additional cert need be in-lined in the phone's config. The value specified in the definition of the 8021x_client_cert and 8021x_client_key settings must match the label of the clientcert and clientkey that you wish to use, respectively.
To configure EAP-PEAPv0/EAP-GTC, users should set:
This sets the method to EAP-PEAPv0/EAP-GTC and passes in the supplied username and password.
To configure EAP-TTLS/EAP-MSCHAPv2, users should set:
This sets the method to EAP-TTLS/EAP-MSCHAPv2 and passes in the supplied username and password.
To configure EAP-TTLS/GTC, users should set:
This sets the method to EAP-TTLS/GTC and passes in the supplied username and password.
To configure 802.1X debugging, users should set:
the debug file should be provided to Digium's Support department.
When a phone is factory defaulted, any stored certificates are deleted.
If a user needs to cause a phone to switch to a different certificate, then the md5 parameter for the in-line cert, clientcert, and/or clientkey should be changed. This will cause the phone to restart to use the new certificate. If the phone receives an updated config in which the md5 parameter has not changed, the phone will not know to restart and will have to be manually restarted.
Disabling 802.1X Authentication
By default, a phone will not perform any 802.1X authentication. The phone disables 802.1X authentication when the following parameter is configured null, the default: