Chapter 21 Configuring Cisco Intercompany Media Engine Proxy

Configuring Cisco Intercompany Media Engine Proxy

 

Command

Purpose

 

 

 

Step 6

hostname(config-tlsp)# server trust-point

For inbound connections, specifies the proxy

 

proxy_trustpoint

trustpoint certificate presented during TLS

 

Example:

handshake. The certificate must be owned by the

 

hostname(config-tlsp)# server trust-point local-ent

 

adaptive security appliance (identity certificate).

 

 

 

 

Where proxy_trustpoint specifies the trustpoint

 

 

defined by the crypto ca trustpoint command in

 

 

Step 2 in “Creating Trustpoints and Generating

 

 

Certificates” section on page 21-21.

 

 

Because the TLS proxy has strict definition of client

 

 

proxy and server proxy, two TLS proxy instances

 

 

must be defined if either of the entities could initiate

 

 

the connection.

 

 

 

Step 7

hostname(config-tlsp)# client cipher-suite

For inbound connections, controls the TLS

 

cipher_suite

handshake parameter for the cipher suite.

 

Example:

Where cipher_suite includes des-sha1, 3des-sha1,

 

hostname(config-tlsp)# client cipher-suite

 

aes128-sha1 aes256-sha1 3des-sha1 null-sha1

aes128-sha1, aes256-sha1, or null-sha1.

 

 

 

Step 8

hostname(config-tlsp)# exit

Exits from the TSL proxy configuration mode.

 

 

 

Step 9

hostname(config)# ssl encryption 3des-shal

Specifies the encryption algorithms that the

 

aes128-shal [algorithms]

SSL/TLS protocol uses. Specifying the 3des-shal

 

 

and aes128-shal is required. Specifying other

 

 

algorithms is optional.

 

 

Note The Cisco Intercompany Media Engine

 

 

Proxy requires that you use strong

 

 

encryption. You must specify this command

 

 

when the proxy is licensed using a K9

 

 

license.

 

 

 

What to Do Next

Once you have created the TLS proxy, enable it for SIP inspection.

Enabling SIP Inspection for the Cisco Intercompany Media Engine Proxy

Enable the TLS proxy for SIP inspection and define policies for both entities that could initiate the connection.

The example command lines in this task are based on a basic (in-line) deployment. See Figure 21-6 on page 21-11for an illustration explaining the example command lines in this task.

Note If you want to change any Cisco Intercompany Media Engine Proxy settings after you enable SIP inspection, you must enter the no service-policycommand, and then reconfigure the service policy as described in this procedure. Removing and reconfiguring the service policy does not affect existing calls; however, the first call traversing the Cisco Intercompany Media Engine Proxy will fail. Enter the clear connection command and restart the ASA.

To enable SIP inspection for the Cisco Intercompany Media Engine Proxy, perform the following steps:

Cisco ASA Series Firewall ASDM Configuration Guide

21-25

Page 512 Page 514
Page 513
Image 513
Cisco Systems ASA 5585-X, ASA 5505, ASA 5545-X, ASA 5555-X, ASA 5580, ASA Services Module manual 21-25
Page 512 Page 514

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