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Cisco ASA Series CLI Configuration Guide
Chapter 1 Configuring the Cisco Phone Proxy
Configuring the Phone Proxy
Command Purpose
Step 1
hostname(config)# crypto key generate rsa label
key-pair-label modulus size
Examples:
hostname(config)# crypto key generate rsa label
ldc_signer_key modulus 1024
hostname(config)# crypto key generate rsa label
phone_common modulus 1024
Creates the necessary RSA key pairs.
Where the
key-pair-label is the LDC signer key
and the key for the IP phones.
Step 2
hostname(config)# crypto ca trustpoint
trustpoint_name
Example:
hostname(config)# crypto ca trustpoint ldc_server
Creates an internal local CA to sign the LDC for
Cisco IP phones.
Where the trustpoint_name is for the LDC.
Step 3
hostname(config-ca-trustpoint)# enrollment self
Generates a self-signed certificate.
Step 4
hostname(config-ca-trustpoint)# proxy-ldc-issuer
Defines the local CA role for the trustpoint to issue
dynamic certificates for the TLS proxy.
Step 5
hostname(config-ca-trustpoint)# fqdn fqdn
Example:
hostname(config-ca-trustpoint)# fqdn
my_ldc_ca.example.com
Includes the indicated FQDN in the Subject
Alternative Name extension of the certificate during
enrollment.
Where the fqdn is for the LDC.
Step 6
hostname(config-ca-trustpoint)# subject-name
X.500_name
Example:
hostname(config-ca-trustpoint)# subject-name
cn=FW_LDC_SIGNER_172_23_45_200
Includes the indicated subject DN in the certificate
during enrollment
Where the X.500_name is for the LDC.
Use commas to separate attribute-value pairs. Insert
quotation marks around any value that contains
commas or spaces.
For example:
cn=crl,ou=certs,o="cisco systems, inc.",c=US
The maximum length is 500 characters.
Step 7
hostname(config-ca-trustpoint)# keypair keypair
Example:
hostname(config-ca-trustpoint)# keypair
ldc_signer_key
Specifies the key pair whose public key is to be
certified.
Where the keypair is for the LDC.
Step 8
hostname(config)# crypto ca enroll ldc_server
Example:
hostname(config)# crypto ca enroll ldc_server
Starts the enrollment process with the CA.
Step 9
hostname(config)# tls-proxy proxy_name
Example:
tls-proxy mytls
Creates the TLS proxy instance.
Step 10
hostname(config-tlsp)# server trust-point
_internal_PP_ctl-instance_filename
Example:
hostname(config-tlsp)# server trust-point
_internal_PP_myctl
Configures the server trustpoint and references the
internal trustpoint named
_internal_PP_ctl-instance_filename.
Step 11
hostname(config-tlsp)# client ldc issuer ca_tp_name
Example:
client ldc issuer ldc_server
Specifies the local CA trustpoint to issue client
dynamic certificates.
Step 12
hostname(config-tlsp)# client ldc keypair key_label
Example:
hostname(config-tlsp)# client ldc keypair
phone_common
Specifies the RSA keypair to be used by client
dynamic certificates.
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