Chapter 16 Using the Cisco Unified Communication Wizard

Configuring the UC-IME by using the Unified Communication Wizard

Configuring the Remote-Side Certificates for the Cisco Intercompany Media Engine Proxy

Establishing a trust relationship cross enterprises or across administrative domains is key. Cross enterprises you must use a trusted third-party CA (such as, VeriSign). The ASA obtains a certificate with the FQDN of the Cisco Unified Communications Manager server (certificate impersonation).

For the TLS handshake, the two entities could validate the peer certificate via a certificate chain to trusted third-party certificate authorities. Both entities enroll with the CAs. The ASA as the TLS proxy must be trusted by both entities. The ASA is always associated with one of the enterprises. Within that enterprise, the entity and the ASA could authenticate each other via a local CA, or by using self-signed certificates.

To establish a trusted relationship between the ASA and the remote entity, the ASA can enroll with the CA on behalf of the local enterprise. In the enrollment request, the local Cisco UCM identity (domain name) is used.

To establish the trust relationship, the ASA enrolls with the third party CA by using the Cisco Unified Communications Manager server FQDN as if the security appliance is the Cisco UCM.

Note If the ASA already has a signed identity certificate, you can skip Step 1 in this procedure and proceed directly to Step 3.

Step 1 In the ASA’s Identity Certificate area, click Generate CSR. The CSR parameters dialog box appears.

For information about specifying additional parameters for the certificate signing request (CSR), see Generating a Certificate Signing Request (CSR) for a Unified Communications Proxy, page 16-24.

Information dialog boxes appear indicating that the wizard is delivering the settings to the ASA and retrieving the certificate key pair information. The Identity Certificate Request dialog box appears.

For information about saving the CSR that was generated and submitting it to a CA, see Saving the Identity Certificate Request, page 16-25.

Step 2 In the ASA’s Identity Certificate area, click Install ASA’s Identity Certificate. Installing the ASA Identity Certificate on the Presence Federation and Cisco Intercompany Media Engine Servers, page 16-26.

Step 3 In the Remote Server’s CA’s Certificate area, click Install Remote Server’s CA’s Certificate. Installing the root certificates of the CA for the remote servers is necessary so that the ASA can determine that the remote servers are trusted.

The Install Certificate dialog box appears. Install the certificate. See Installing a Certificate, page 16-23.

Note You must install the root certificates only when the root certificates for the remote servers are received from a CA other than the one that provided the identity certificate for the ASA

Step 4 Click Next.

The wizard completes by displaying a summary of the configuration created for the Cisco Intercompany Media Engine.

Cisco ASA Series Firewall ASDM Configuration Guide

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Cisco Systems ASA 5580, ASA 5505, ASA 5545-X, ASA 5555-X, ASA 5585-X, ASA Services Module manual 16-22
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ASA Services Module, ASA 5555-X, ASA 5545-X, ASA 5585-X, ASA 5580 specifications

Cisco Systems has long been a leader in the field of network security, and its Adaptive Security Appliance (ASA) series is a testament to this expertise. Within the ASA lineup, models such as the ASA 5505, ASA 5580, ASA 5585-X, ASA 5545-X, and ASA 5555-X stand out for their unique features, capabilities, and technological advancements.

The Cisco ASA 5505 is designed for small businesses or branch offices. It provides essential security features such as firewall protection, flexible VPN capabilities, and intrusion prevention. The ASA 5505 supports a user-friendly interface, allowing for straightforward management. Its built-in threat detection and prevention tools provide a layered defense, and with scalability in mind, it can accommodate various expansion options as organizational needs grow.

Moving up the line, the ASA 5580 delivers greater throughput and advanced security features. This model is suited for medium to large enterprises that require robust protection against increasingly sophisticated threats. Its multi-core architecture allows it to manage high volumes of traffic seamlessly while maintaining excellent performance levels. The ASA 5580 also supports application-layer security and customizable access policies, making it highly adaptable to diverse security environments.

The ASA 5585-X further enhances Cisco's security offerings with advanced malware protection and extensive security intelligence capabilities. It incorporates next-generation firewall features, including context-aware security, and supports advanced threat detection technologies. This model is ideal for large enterprises or data centers that prioritize security while ensuring uninterrupted network performance and availability.

For enterprises requiring a balance of performance and security, the ASA 5545-X presents a compelling option. This model features scalable performance metrics, high availability, and integrated advanced threat protection. Coupled with advanced endpoint protection and detailed monitoring capabilities, the ASA 5545-X enables organizations to manage their security posture effectively.

Lastly, the ASA 5555-X blends cutting-edge technologies with strong security infrastructures. It boasts high throughput and the ability to execute deep packet inspections. Its sophisticated architecture supports threat intelligence feeds that provide real-time security updates, making it a powerful tool against modern threats.

Each of these Cisco ASA models brings specific advantages to varied environments. Their integrative capabilities enable businesses to enhance their security postures while benefiting from seamless scalability and management. As cybersecurity threats evolve, these advanced appliances play a vital role in protecting valuable digital assets.
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