A method of configuring a modem, comprising: receiving an encrypted authentication token from the modem, the authentication token having at least one password and being encrypted according to a public key, the encrypted authentication token further comprising a session key; transmitting the encrypted authentication token to an authentication server; receiving a decrypted authentication token from the authentication server; and configuring at least one modem interface at least in part using the authentication token, comprising: generating configuration data; encrypting the configuration data according to at least a portion of the authentication token; and transmitting the encrypted configuration data to the modem, wherein generating the configuration data comprises: generating a bitmap, the bitmap having a plurality of values, each of the plurality of values enabling one of a plurality of modem interfaces; encrypting the configuration data at least in part according to at least a portion of the authentication token comprises: encrypting the bitmap according to at least a portion of the session key of the authentication token; and the modem decrypts the encrypted configuration data according to the at least a portion of the session key of the authentication token, and enables or disables the plurality of modem interfaces according to the plurality of values. receiving an encrypted authentication token from the modem, the authentication token having at least one password and being encrypted according to a public key, the encrypted authentication token further comprising a session key; transmitting the encrypted authentication token to an authentication server; receiving a decrypted authentication token from the authentication server; and configuring at least one modem interface at least in part using the authentication token, comprising: generating configuration data; encrypting the configuration data according to at least a portion of the authentication token; and transmitting the encrypted configuration data to the modem, generating configuration data; encrypting the configuration data according to at least a portion of the authentication token; and transmitting the encrypted configuration data to the modem, wherein generating the configuration data comprises: generating a bitmap, the bitmap having a plurality of values, each of the plurality of values enabling one of a plurality of modem interfaces; encrypting the configuration data at least in part according to at least a portion of the authentication token comprises: encrypting the bitmap according to at least a portion of the session key of the authentication token; and generating a bitmap, the bitmap having a plurality of values, each of the plurality of values enabling one of a plurality of modem interfaces; encrypting the configuration data at least in part according to at least a portion of the authentication token comprises: encrypting the bitmap according to at least a portion of the session key of the authentication token; and the modem decrypts the encrypted configuration data according to the at least a portion of the session key of the authentication token, and enables or disables the plurality of modem interfaces according to the plurality of values. <EOS>