Interdomain Federation for IM and Presence Service on Cisco Unified Communications Manager, Release 9.1(1) - Configuration of security certificate exchange between Cisco Adaptive Security Appliance and Microsoft Access Edge using VeriSign [Cisco Unified Communications Manager (CallManager)]

Contents
Configuration of security certificate exchange between Cisco Adaptive Security Appliance and Microsoft Access Edge using VeriSign
Security certificate configuration on Cisco Adaptive Security Appliance
Delete old certificates and trustpoints
Generate new trustpoint for VeriSign
Import root certificate
Generate certificate signing request
Submit certificate signing request to VeriSign
Delete certificate used for certificate signing request
Import intermediate certificate
Create a trustpoint for root certificate
Import root certificate
Import signed certificate
Import VeriSign certificates onto Microsoft Access Edge
Configuration of security certificate exchange between Cisco Adaptive Security Appliance and Microsoft Access Edge using VeriSign

Security certificate configuration on Cisco Adaptive Security Appliance
Import VeriSign certificates onto Microsoft Access Edge
Security certificate configuration on Cisco Adaptive Security Appliance

Delete old certificates and trustpoints
Generate new trustpoint for VeriSign
Import root certificate
Generate certificate signing request
Submit certificate signing request to VeriSign
Delete certificate used for certificate signing request
Import intermediate certificate
Create a trustpoint for root certificate
Import root certificate
Import signed certificate
Delete old certificates and trustpoints
This procedure describes how to delete the old intermediate and signed certificate, and the trustpoint for the root certificate on Cisco Adaptive Security Appliance.

Before You Begin
Ensure you carried out the configuration tasks described in the following chapters:

Configuration of IM and Presence for SIP federation

Cisco Adaptive Security Appliance configuration for SIP federation

Procedure
Step 1
Enter config mode, type:
>Enable >password
>config t
Step 2
Enter this command to display the trustpoints:
show crypto ca trustpoints
Step 3
Enter this command to delete the trustpoint and associated certificates:
no crypto ca trustpoint <name of trustpoint>
The following warning output displays:
WARNING: Removing an enrolled trustpoint will destroy allcertificates received from the related Certificate Authority.
Step 4 Enter yeswhen you are prompted to delete the trustpoint.
What to Do Next

Generate new trustpoint for VeriSign
Generate new trustpoint for VeriSign
Procedure
Step 1
Enter config mode, type:
>Enable >password
>config t
Step 2
Enter this command to generate the key pair for this certification:
crypto key generate rsa label keys_for_verisign 
Step 3
Enter the following sequence of commands to create a trustpoint for IM and Presence:
crypto ca trustpoint <name of trustpoint>
(config-ca-trustpoint)# enrollment terminal
(config-ca-trustpoint)# subject-name cn=<fqdn>, OU=<organisational_unit>,O=<organisation_name>,C=<country>,St=<state>,L=<locality>
(config-ca-trustpoint)# keypair keys_for_verisign
(config-ca-trustpoint)# fqdn none
(config-ca-trustpoint)# exit
Note
If you are submitting a renewal certificate signing request (CSR) file to VeriSign, the subject-name value must contain the following information:

Country (two letter country code only)

State (no abbreviations)

Locality (no abbreviations)

Organization Name

Organizational Unit

Common Name (FQDN) - This value must be the FQDN of the public IM and Presence.

Troubleshooting Tips

Enter the command show crypto key mypubkey rsa to check that the key pair is generated.
What to Do Next

Import intermediate certificate
Import root certificate
Before You Begin
Complete the steps in Generate new trustpoint for VeriSign.

Procedure
Step 1
Enter config mode, type:
>Enable >password
>config t
Step 2
Enter this command to import the certificate onto Cisco Adaptive Security Appliance:
crypto ca authenticate  <name of trustpoint>
Step 3
Enter the CA certificate, for example:
-----BEGIN CERTIFICATE-----MIIDAzCCAmwCEQC5L2DMiJ+hekYJuFtwbIqvMA0GCSqGSIb3DQEBBQUAMIH...
-----END CERTIFICATE-----
quit
Note
Finish with the word "quit" on a separate line.
Step 4 Enter yes when you are prompted to accept the certificate.
What to Do Next

Generate certificate signing request
Generate certificate signing request
Before You Begin
Complete the steps in Import root certificate.

Procedure
Step 1
Enter config mode, type:
>Enable >password
>config t
Step 2
Enter this command to send an enrollment request to the CA:
crypto ca enroll <name of trustpoint>
The following warning output displays:
%WARNING: The certificate enrollment is configured with an fqdnthat differs from the system fqdn. If this certificate will be
used for VPN authentication this may cause connection problems.
Step 3
Enter yes when you are prompted to continue with the enrollment.
% Start certificate enrollment..% The subject name in the certificate will be: <fqdn>, OU=<organisational_unit>,O=<organisation_name>,C=<country>,St=<state>,L=<locality>
Step 4 Enter no when you are prompted to include the device serial number in the subject name.

Step 5 Enter yes when you are prompted to display the certificate request in the terminal.
The certificate request displays.
What to Do Next

Submit certificate signing request to VeriSign
Submit certificate signing request to VeriSign

When you submit the Certificate Signing Request, VeriSign will provide you with the following certificate files:

verisign-signed-cert.cer (signed certificate)

trial-inter-root.cer (subordinate intermediate root certificate)

verisign-root-ca.cer (root CA certificate)

Save the certificate files in separate notepad files once you have downloaded them.

Before You Begin
Complete the steps in Generate certificate signing request.

You will need the challenge password that you defined when generating the Certificate Signing Request.

Procedure
Step 1   Go to the VeriSign website.

Step 2   Follow the procedure to enter a Certificate Signing Request.

Step 3   When prompted, submit the challenge password for the Certificate Signing Request.

Step 4   Paste the Certificate Signing Request into the window provided.
Note
You need to paste from -----BEGIN CERTIFICATE----- to -----END CERTIFICATE----- inclusive.

What to Do Next
Delete certificate used for certificate signing request
Delete certificate used for certificate signing request
You must delete the temporary root certificate used to generate the Certificate Signing Request.

Before You Begin
Complete the steps in Submit certificate signing request to VeriSign.

Procedure
Step 1
Enter config mode, type:
>Enable >password
>config t
Step 2
Enter this command to display the certificates:
show running-config crypto calook for crypto ca certificate chain <name of trustpoint>
Step 3
Enter this command to delete the certificate:
(config)# crypto ca certificate chain <name of trustpoint>
(config-cert-chain)#  no certificate ca 00b92f60cc889fa17a4609b85b70$
The following warning output displays:
WARNING: The CA certificate will be disassociated from this trustpoint andwill be removed if it is not associated with any other trustpoint.  Any
other certificates issued by this CA and associated with this trustpoint
will also be removed.
Step 4 Enter yeswhen you are prompted to delete the trustpoint.
What to Do Next

Import intermediate certificate
Import intermediate certificate
Before You Begin
Complete the steps in Delete certificate used for certificate signing request.

Procedure
Step 1
Enter config mode, type:
>Enable >password
>config t
Step 2
Enter this command to import the certificate onto Cisco Adaptive Security Appliance:
crypto ca authenticate <name of trustpoint>
Step 3
Enter the CA certificate, for example:
-----BEGIN CERTIFICATE-----MIIEwDCCBCmgAwIBAgIQY7GlzcWfeIAdoGNs+XVGezANBgkqhkiG9w0BAQU....
-----END CERTIFICATE-----
quit
Note
Finish with the word "quit" on a separate line.
Step 4 Enter yes when you are prompted to accept the certificate.
What to Do Next

Create a trustpoint for root certificate
Create a trustpoint for root certificate
Before You Begin
Complete the steps in Import intermediate certificate.

Procedure
Step 1
Enter config mode, type:
>Enable >password
>config t
Step 2
Enter this command to generate the trustpoint:
crypto ca trustpoint verisign_root
Step 3
Enter the following sequence of commands:
(config-ca-trustpoint)# revocation-check none(config-ca-trustpoint)# keypair keys_for_verisign
(config-ca-trustpoint)# enrollment terminal
(config-ca-trustpoint)# exit
Import root certificate
Before You Begin
Complete the steps in Create a trustpoint for root certificate.

Procedure
Step 1
Enter config mode, type:
>Enable >password
>config t
Step 2
Enter this command to import the certificate onto Cisco Adaptive Security Appliance:
crypto ca authenticate  verisign_root
Step 3
Enter the CA certificate, for example:
-----BEGIN CERTIFICATE-----MIICmDCCAgECECCol67bggLewTagTia9h3MwDQYJKoZIhvcNAQECBQAw....
-----END CERTIFICATE-----
quit
Note
Finish with the word "quit" on a separate line.
Step 4 Enter yes when you are prompted to accept the certificate.
What to Do Next

Import signed certificate
Import signed certificate
Before You Begin
Complete the steps in Import root certificate.

Procedure
Step 1
Enter config mode, type:
>Enable >password
>config t
Step 2
Enter this command to import the certificate onto Cisco Adaptive Security Appliance:
crypto ca import verisignca certificate
The following warning output displays:
WARNING: The certificate enrollment is configured with an fqdnthat differs from the system fqdn. If this certificate will be
used for VPN authentication this may cause connection problems.
Step 3 Enter yes when you are prompted to continue with the certificate enrollment.
Step 4
Enter the CA certificate, for example:
-----BEGIN CERTIFICATE-----MIIFYTCCBEmgAwIBAgIQXtEPGWzZ0b9gejHejq+HazANBgkqhkiG9w0B....
-----END CERTIFICATE-----
quit
Note
Finish with the word "quit" on a separate line.
Step 5 Enter yes when you are prompted to accept the certificate.
What to Do Next

Import VeriSign certificates onto Microsoft Access Edge
Import VeriSign certificates onto Microsoft Access Edge

This procedure describes how to import the VeriSign root and intermediate certificates onto the Microsoft Access Edge server.

Before You Begin
Save the certificates that were provided by VeriSign to the Access Edge server, for example, in C:\.

Procedure
Step 1   On the Access Edge server, enter mmc from the run command.

Step 2   Select File > Add/Remove Snap-in.

Step 3   Click Add.

Step 4   Click Certificates.

Step 5   Click Add.

Step 6   Select Computer account.

Step 7   Click Next.

Step 8   Select Local computer.

Step 9   Click Finish.

Step 10   Click OK to close the Add/Remove Snap-In window.

Step 11   In the main console, expand the Certificates tree.

Step 12   Open the Trusted Root Certificates branch.

Step 13   Right-click on Certificates.

Step 14   Select All Tasks > Import.

Step 15   Click Next on the certificate wizard.

Step 16   Browse for a VeriSign certificate in the C:\ directory.

Step 17   Click Place all certificates in the following store.

Step 18   Select Trusted Root Certification Authorities as the certificate store.

Step 19   Repeat steps 13 to 18 to import the additional VeriSign certificates.