Chapter 16 Using the Cisco Unified Communication Wizard

Configuring the Phone Proxy by using the Unified Communication Wizard

Step 2 Specify each entity in the network (all Cisco UCM and TFTP servers) that the IP phones must trust. Click Add to add the servers. See Configuring Servers for the Phone Proxy, page 16-6.

To modify the configuration of a server already added to the configuration, select the server in the table and click Edit. The Edit Server dialog appears. See Configuring Servers for the Phone Proxy, page 16-6. At least one Cisco UCM and at least one TFTP server must be configured for the phone proxy.

Step 3 Specify the security mode of the Cisco UCM cluster by clicking one of the following options in the Unified CM Cluster Mode field:

•Non-secure—Specifies the cluster to be in nonsecure mode when configuring the Phone Proxy feature.

•Mixed—Specifies the cluster to be in mixed mode when configuring the Phone Proxy feature.

If you selected the Mixed security mode, the Generate and Export LDC Certificate button becomes available.

Step 4 For a Mixed security mode only, configure local dynamic certificates (LDC) for the IP phones by performing the following steps:

a.Click the Generate and Export LDC Certificate button.

A dialog box appears stating “Enrollment succeeded,” which indicates that the LDC was generated.

b.Click OK to close the Enrollment Status dialog box. The Export certificate dialog box appears.

c.In the Export to File field, enter the file name and path for the LDC or click browse to locate and select an existing file.

d.Click the Export Certificate button. A dialog box appears indicating that the file was exported successfully.

e.Click OK to close the dialog box. A dialog box appears reminding you to install the LDC on the Cisco UCMs.

f.Click OK to close the dialog box.

Once configured, the ASA presents this unique, dynamically-created certificate to the Cisco UCM on behalf of the IP phones.

Step 5 Click Next.

Configuring Servers for the Phone Proxy

The values that you specify in this page generate address translation settings, access list entries, trustpoints, and the corresponding CTL file entries for each server.

You must add a server for each entity in the network that the IP phones must trust. These servers include all Cisco UCM servers in the cluster and all the TFTP servers.

You must add at least one TFTP server and at least one Cisco UCM server for the phone proxy. You can configure up to five TFTP servers for the phone proxy. The TFTP server is assumed to be behind the firewall on the trusted network; therefore, the phone proxy intercepts the requests between the IP phones and TFTP server.

Note When you delete a TFTP server from the Server list in Step 2 of the wizard, ASDM deletes only the TFTP server IP address from the configuration and does not remove from the configuration all the ACLs, NAT statements, object groups, etc. attached to the TFTP server. To remove those attached configuration

Cisco ASA Series Firewall ASDM Configuration Guide

16-6

Page 407 Page 409
Page 408
Image 408
Cisco Systems ASA 5505 Configuring Servers for the Phone Proxy, Click the Generate and Export LDC Certificate button, 16-6
Page 407 Page 409

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.
Top Page Image Contents