System Administration Guide for Cisco Unity Connection Release 9.x
Configuring SSL in Cisco Unity Connection 9.x
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Table of Contents

Configuring SSL in Cisco Unity Connection 9.x

Deciding Whether to Create and Install an SSL Certificate in Cisco Unity Connection 9.x

Securing Cisco Unity Connection Administration, Cisco PCA, and IMAP Email Client Access to Cisco Unity Connection 9.x

Installing Microsoft Certificate Services (Windows Server 2003 Only) in Cisco Unity Connection 9.x

Exporting the Issuer Certificate and Issuing the Server Certificate (Microsoft Certificate Services Only) in Cisco Unity Connection 9.x

Configuring SSL in Cisco Unity Connection 9.x

This chapter contains information on creating a certificate signing request, issuing an SSL certificate (or having it issued by an external certification authority), and installing the certificate on the Cisco Unity Connection server to secure Cisco Unity Connection Administration, Cisco Personal Communications Assistant (Cisco PCA) and IMAP email client access to Cisco Unity Connection.

The Cisco PCA website provides access to the web tools that users use to manage messages and personal preferences with Connection. Note that IMAP client access to Connection voice messages is a licensed feature.

See the following sections:

Deciding Whether to Create and Install an SSL Certificate in Cisco Unity Connection 9.x

When you install Cisco Unity Connection, a local certificate is automatically created and installed to secure communication between the Cisco PCA and Connection, and between IMAP email clients and Connection. This means that all network traffic (including usernames, passwords, other text data, and voice messages) between the Cisco PCA and Connection is automatically encrypted, and network traffic between IMAP email clients and Connection is automatically encrypted if you enable encryption in the IMAP clients. However, if you want to reduce the risk of man-in-the-middle attacks, do the procedures in this chapter.

If you decide to install an SSL certificate, we recommend that you also consider adding the trust certificate of the certification authority to the Trusted Root Store on user workstations. Without the addition, the web browser displays security alerts for users who access the Cisco PCA and for users who access Connection voice messages with some IMAP email clients.

(For information on managing security alerts, see the “Managing Security Alerts When Using Self-Signed Certificates with SSL Connections in Cisco Unity Connection 9.x” section in the “ Setting Up Access to the Cisco Personal Communications Assistant in Cisco Unity Connection 9.x ” chapter of the User Workstation Setup Guide for Cisco Unity Connection Release 9.x . For information on configuring supported IMAP email clients, see the “ Configuring an Email Account to Access Cisco Unity Connection 9.x Voice Messages ” chapter of the same guide. The guide is available at http://www.cisco.com/en/US/docs/voice_ip_comm/connection/9x/user_setup/guide/9xcucuwsx.html .)

Securing Cisco Unity Connection Administration, Cisco PCA, and IMAP Email Client Access to Cisco Unity Connection 9.x

Do the following tasks to create and install an SSL server certificate to secure Cisco Unity Connection Administration, Cisco Personal Communications Assistant, and IMAP email client access to Cisco Unity Connection:

1. If you are using Microsoft Certificate Services to issue certificates, install Microsoft Certificate Services. For information on installing Microsoft Certificate Services on a server running Windows Server 2003, see the “Installing Microsoft Certificate Services (Windows Server 2003 Only) in Cisco Unity Connection 9.x” section. For information on installing Microsoft Certificate Services on a server running a later version of Windows Server, refer to Microsoft documentation.

If you are using another application to issue certificates, install the application. See the manufacturer documentation for installation instructions. Then skip to Task 2.

If you are using an external certification authority to issue certificates, skip to Task 2.


Note If you already have installed Microsoft Certificate Services or another application that can create certificate signing requests, skip to Task 2.


2. If a Connection cluster is configured, run the set web-security CLI command on both Connection servers in the cluster and assign both servers the same alternate name. The alternate name will automatically be included in the certificate signing request and in the certificate. For information on the set web-security CLI command, see the applicable Command Line Interface Reference Guide for Cisco Unified Communications Solutions at http://www.cisco.com/en/US/products/ps6509/prod_maintenance_guides_list.html .

3. If a Connection cluster is configured, configure a DNS A record that contains the alternate name that you assigned in Task 2. List the publisher server first. This allows all IMAP email applications and the Cisco Personal Communications Assistant to access Connection voice messages by using the same Connection server name.

4. Create a certificate signing request. Then download the certificate signing request to the server on which you installed Microsoft Certificate Services or another application that issues certificates, or download the request to a server that you can use to send the certificate signing request to an external CA. Do the To Create and Download a Certificate Signing Request.

If a Connection cluster is configured, do this task for both servers in the Connection cluster.

5. If you are using Microsoft Certificate Services to export the issuer certificate and to issue the server certificate, do the procedure in the “Exporting the Issuer Certificate and Issuing the Server Certificate (Microsoft Certificate Services Only) in Cisco Unity Connection 9.x” section.

If you are using another application to issue the certificate, see the documentation for the application for information on issuing certificates.

If you are using an external CA to issue the certificate, send the certificate signing request to the external CA. When the external CA returns the certificate, continue with Task 6.

If a Connection cluster is configured, do this task for both servers in the Connection cluster.

6. Upload the issuer certificate and the server certificate to the Connection server. Do the To Upload the Issuer and Server Certificates to the Cisco Unity Connection Server.

If a Connection cluster is configured, do this task for both servers in the Connection cluster.

7. Restart the Connection IMAP Server service so that Connection and the IMAP email clients use the new SSL certificates. Do the To Restart the Connection IMAP Server Service.

If a Connection cluster is configured, do this task for both servers in the Connection cluster.

8. To prevent users from seeing a security alert whenever they access Connection by using Connection Administration, the Cisco PCA, or an IMAP email client, do the following tasks on all computers from which users will access Connection:

Import the server certificate that you uploaded to the Connection server in Task 6. into the certificate store. The procedure differs based on the browser or IMAP email client. For more information, see the documentation for the browser or IMAP email client.

Import the server certificate that you uploaded to the Connection server in Task 6. into the Java store. The procedure differs based on the operating system running on the client computer. For more information, see the operating system documentation and the Java Runtime Environment documentation.

To Create and Download a Certificate Signing Request


Step 1 On the Cisco Unity Connection server, sign in to Cisco Unified Operating System Administration.

Step 2 On the Security menu, select Certificate Management .

Step 3 On the Certificate List page, select Generate CSR .

Step 4 On the Generate Certificate Signing Request page, in the Certificate Name list, select tomcat .

Step 5 Select Generate CSR .

Step 6 When the Status area displays a message that the CSR was successfully generated, select Close .

Step 7 On the Certificate List page, select Download CSR .

Step 8 On the Download Certificate Signing Request page, in the Certificate Name list, select tomcat .

Step 9 Select Download CSR .

Step 10 In the File Download dialog box, select Save .

Step 11 In the Save As dialog box, in the Save As Type list, select All Files .

Step 12 Save the file tomcat.csr to a location on the server on which you installed Microsoft Certificate Services or on a server that you can use to send the CSR to an external certification authority.

Step 13 On the Download Certificate Signing Request page, select Close .


 

To Upload the Issuer and Server Certificates to the Cisco Unity Connection Server


Step 1 On the Cisco Unity Connection server on which you created the certificate signing request, sign in to Cisco Unified Operating System Administration.

Step 2 On the Security menu, select Certificate Management .


Note If you select Find and display a list of the certificates currently installed on the server, you will see an existing, automatically generated, self-signed certificate for Tomcat. That certificate is unrelated to the Tomcat certificates that you upload in this procedure.


Step 3 Upload the issuer certificate:

a. On the Certificate List page, select Upload Certificate .

b. On the Upload Certificate page, in the Certificate Name list, select tomcat-trust .

c. Leave the Root Certificate field blank.

d. Select Browse , and browse to the location of the issuer CA certificate.

If you used Microsoft Certificate Services to issue the certificate, this is the location of the issuer certificate that you exported in the To Export the Issuer Certificate and to Issue the Server Certificate.

If you used an external certification authority to issue the certificate, this is the location of the issuer CA certificate that you received from the external certification authority.

e. Select the name of the file.

f. Select Open .

g. On the Upload Certificate page, select Upload File .

h. When the Status area reports that the upload succeeded, select Close .

Step 4 Upload the server certificate:

a. On the Certificate List page, select Upload Certificate .

b. On the Upload Certificate page, in the Certificate Name list, select tomcat .

c. In the Root Certificate field, enter the filename of the issuer certificate that you uploaded in Step 3.

d. Select Browse , and browse to the location of the server certificate.

If you used Microsoft Certificate Services to issue the certificate, this is the location of the server certificate that you issued in the To Export the Issuer Certificate and to Issue the Server Certificate.

If you used an external certification authority to issue the certificate, this is the location of the server certificate that you received from the external certification authority.

e. Select the name of the file.

f. Select Open .

g. On the Upload Certificate page, select Upload File .

h. When the Status area reports that the upload succeeded, select Close .

Step 5 Restart the Tomcat service (the service cannot be restarted from Cisco Unified Serviceability):

a. Sign in to the Connection server by using an SSH application.

b. Run the following CLI command to restart the Tomcat service:

utils service restart Cisco Tomcat
 


 

To Restart the Connection IMAP Server Service


Step 1 Sign in to Cisco Unity Connection Serviceability.

Step 2 On the Tools menu, select Service Management .

Step 3 In the Optional Services section, for the Connection IMAP Server service, select Stop .

Step 4 When the Status area displays a message that the Connection IMAP Server service was successfully stopped, select Start for the service.


 

Installing Microsoft Certificate Services (Windows Server 2003 Only) in Cisco Unity Connection 9.x

If you want to use a third-party certificate authority to issue SSL certificates, or if Microsoft Certificate Services is already installed, skip this section.

Do the procedure in this section if you want to use Microsoft Certificate Services to issue your own certificate and if you want to install the application on a server running Windows Server 2003.

If you want to install a root certification authority (the generic term for Microsoft Certificate Services) on a Windows Server 2008 server, refer to the Windows Server 2008 online help.

To Install the Microsoft Certificate Services Component


Step 1 On any server whose DNS name (FQDN) or IP address can be resolved by all client computers that will use the Cisco PCA or that will use an IMAP client to access Cisco Unity Connection voice messages, sign in to Windows by using an account that is a member of the local Administrators group.

Step 2 On the Windows Start menu, select Settings > Control Panel > Add or Remove Programs .

Step 3 In the left pane of the Add or Remove Programs control panel, select Add/Remove Windows Components .

Step 4 In the Windows Components dialog box, check the Certificate Services check box. Do not change any other items.

Step 5 When the warning appears about not being able to rename the computer or to change domain membership, select Yes .

Step 6 Select Next .

Step 7 On the CA Type page, select Stand-alone Root CA , and select Next . (A stand-alone certification authority (CA) is a CA that does not require Active Directory.)

Step 8 On the CA Identifying Information page, in the Common Name for This CA field, enter a name for the certification authority.

Step 9 Accept the default value in the Distinguished Name Suffix field.

Step 10 For Validity Period, accept the default value of 5 Years .

Step 11 Select Next .

Step 12 On the Certificate Database Settings page, select Next to accept the default values.

If a message appears indicating that Internet Information Services is running on the computer and must be stopped before proceeding, select Yes to stop the services.

Step 13 If you are prompted to insert the Windows Server 2003 disc into the drive, do so.

Step 14 In the Completing the Windows Components Wizard dialog box, select Finish .

Step 15 Close the Add or Remove Programs dialog box.


 

Exporting the Issuer Certificate and Issuing the Server Certificate (Microsoft Certificate Services Only) in Cisco Unity Connection 9.x

Do the following procedure only when you are using Microsoft Certificate Services to issue the certificate.

To Export the Issuer Certificate and to Issue the Server Certificate


Step 1 On the server on which you installed Microsoft Certificate Services, sign in to Windows by using an account that is a member of the Domain Admins group.

Step 2 On the Windows Start menu, select Programs > Administrative Tools > Certification Authority .

Step 3 In the left pane, expand Certification Authority (Local) > <Certification authority name> , where <Certification authority name> is the name that you gave to the certification authority when you installed Microsoft Certificate Services in the To Install the Microsoft Certificate Services Component.

Step 4 Export the issuer certificate:

a. Right-click the name of the certification authority, and select Properties .

b. On the General tab, select View Certificate .

c. Select the Details tab.

d. Select Copy to File .

e. On the Welcome to the Certificate Export Wizard page, select Next .

f. On the Export File Format page, select Next to accept the default value of DER Encoded Binary X.509 (.CER) .

g. On the File to Export page, enter a path and filename for the .cer file. Select a network location that you can access from the Connection server.

Write down the path and filename. You will need it in a later procedure.

h. Follow the onscreen prompts until the wizard has finished the export.

i. Select OK to close the Certificate dialog box, and select OK again to close the Properties dialog box.

Step 5 Issue the server certificate:

a. Right-click the name of the certification authority, and select All Tasks > Submit New Request .

b. Browse to the location of the certificate signing request file that you created in the To Create and Download a Certificate Signing Request, and double-click the file.

c. In the left pane of Certification Authority, select Pending Requests .

d. Right-click the pending request that you submitted in b., and select All Tasks > Issue .

e. In the left pane of Certification Authority, select Issued Certificates .

f. Right-click the new certificate, and select All Tasks > Export Binary Data .

g. In the Export Binary Data dialog box, in the Columns that Contain Binary Data list, select Binary Certificate .

h. Select Save Binary Data to a File .

i. Select OK .

j. In the Save Binary Data dialog box, enter a path and filename. Select a network location that you can access from the Cisco Unity Connection server.

Write down the path and filename. You will need it in a later procedure.

k. Select OK .

Step 6 Close Certification Authority.