- Preface
- Encryption Support
- IPsec and NAT Support
- Cisco Unified Contact Center Security Wizard
- IPsec with Network Isolation Utility
- Windows Server Firewall Configuration
- SQL Server Hardening
- Cisco SSL Encryption Utility
- Auditing
- General Antivirus Guidelines
- Remote Administration
- Other Security Considerations
- Index
Security Best Practices Guide for Cisco Unified ICM/Contact Center Enterprise & Hosted, Release 10.0(1)
- Updated:
- June 1, 2015
Chapter: Cisco SSL Encryption Utility
Cisco SSL Encryption Utility
About SSL Encryption Utility
Unified ICM web servers are configured for secure access (HTTPS) using SSL. Cisco provides an application called the SSL Encryption Utility (SSLUtil.exe) to help with the task of configuring web servers for use with SSL.
 Note | This utility is only supported on servers running Windows Server 2008 R2. |
Operating system facilities such as IIS can also accomplish the operations performed by the SSL encryption utility; however the Cisco utility simplifies the process.
SSLUtil.exe is located in the <ICMInstallDrive>\icm\bin folder. The SSL Encryption Utility can be invoked in either standalone mode or automatically as part of setup.
The SSL Encryption Utility generates log messages pertaining to the operations that it performs. When it runs as part of setup, log messages are written to the setup log file. When the utility is in standalone mode, the log messages appear in the SSL Utility Window and the <SystemDrive>\temp\SSLUtil.log file.
The SSL Encryption Utility performs the following major functions:
SSL is available only for Unified ICM web applications installed on Windows Server 2008 R2. The Unified ICM/Unified CCE web applications that you can configure for SSL are:
- SSL Installation During Setup
- SSL Encryption Utility in Standalone Mode
- Enable Transport Layer Security (TLS) 1.0 Protocol
SSL Installation During Setup
By default, setup enables SSL for Unified CCE Internet Script Editor, and Agent Re-skilling applications.
Note | If you use IIS manager to modify SSL settings while the SSL Configuration Utility is open, the SSL Configuration Utility does not reflect those changes until you restart the utility. |
The SSL Configuration Utility also facilitates creation of self-signed certificates and installation of the created certificate in IIS. You can also remove a certificate from IIS using this tool. When invoked as part of setup, the SSL Configuration Utility sets SSL port in IIS to 443 if it is found to be blank.
Unified CCE does not support the import of third-party certificates on Windows-based components.
To use SSL for Agent Re-skilling or Internet Script Editor, accept the default settings during installation and the supported servers use SSL.
When the utility runs during setup a self-signed certificate is generated (using OpenSSL), imported into the Local Machine Store, and installed on the web server. Virtual directories are enabled and configured for SSL with 128-bit encryption.
Note | During setup, if a certificate exists or the web server has an existing server certificate installed, a log entry is added and no changes take effect. Use the utility in standalone mode or directly use the IIS Services Manager to do any certificate management changes. |
SSL Encryption Utility in Standalone Mode
In standalone mode, the SSL Configuration Utility displays the list of Unified ICM instances installed on the local machine. When Unified ICM instance is selected, the web applications installed and their SSL settings are displayed. You can then alter the SSL settings for the web application.
The SSL Configuration Utility also facilitates the creation of self-signed certificates and the installation of the created certificate in IIS. You can also remove a certificate from IIS using this tool. When invoked as part of setup, the SSL Configuration Utility sets SSL port in IIS to 443 if it is found to be blank.
Enable Transport Layer Security (TLS) 1.0 Protocol
The ICM security template enables FIPS-compliant strong encryption, which requires the TLS 1.0 protocol enabled instead of SSL 2.0 or SSL 3.0. To ensure web browser connectivity to Dynamic Re-skilling (Agent Re-skilling) over HTTPS using Internet Explorer, enable TLS 1.0 protocol.
Use the following steps to enable the TLS 1.0 protocol:
See the Microsoft Knowledge Base (KB) KB 811833 for more information about security settings.
Note | If you apply security hardening and Internet Explorer is not configured to support the TLS 1.0 protocol, the web browser cannot connect to the web server. An error message indicates that the page is either unavailable or that the website is experiencing technical difficulties. |
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