20-2

Chapter 20 Configuring Cisco Unified Presence

Information About Cisco Unified Presence

Figure 20-1 Typical Cisco Unified Presence/LCS Federation Scenario

Enterprise X

Enterprise Y

private

DMZ

private network

Cisco UCM

Cisco UP

(UK)

(HK)

Cisco UCM

10.0.0.2

192.0.2.1

192.0.2.254

Cisco UP

Routing

ASA

Ins

ide

SIP

Access

LCS

(US)

Proxy

LCS

8.0.4

Internet

Proxy

Director

(Cisco UP)

UC Orative IPPM (Ann) (Ann) (Ann)

Functions as:

•TLS Proxy

•NAT w/SIP rewrite

•Firewall

MOC (Yao)

MOC (Zak)

271637

In the above architecture, the ASA functions as a firewall, NAT, and TLS proxy, which is the recommended architecture. However, the ASA can also function as NAT and the TLS proxy alone, working with an existing firewall.

Either server can initiate the TLS handshake (unlike IP Telephony or Cisco Unified Mobility, where only the clients initiate the TLS handshake). There are by-directional TLS proxy rules and configuration. Each enterprise can have an ASA as the TLS proxy.

In Figure 20-1, NAT or PAT can be used to hide the private address of Entity X. In this situation, static NAT or PAT must be configured for foreign server (Entity Y) initiated connections or the TLS handshake (inbound). Typically, the public port should be 5061. The following static PAT command is required for the Cisco UP that accepts inbound connections:

ciscoasa(config)# object network obj-10.0.0.2-01

ciscoasa(config-network-object)# host 10.0.0.2

ciscoasa(config-network-object)#nat (inside,outside) static 192.0.2.1 service tcp 5061

5061

The following static PAT must be configured for each Cisco UP that could initiate a connection (by sending SIP SUBSCRIBE) to the foreign server.

For Cisco UP with the address 10.0.0.2, enter the following command:

ciscoasa(config)# object network obj-10.0.0.2-02 ciscoasa(config-network-object)#host 10.0.0.2 ciscoasa(config-network-object)#nat (inside,outside) static 192.0.2.1 service tcp 5062 5062

ciscoasa(config)# object network obj-10.0.0.2-03 ciscoasa(config-network-object)#host 10.0.0.2 ciscoasa(config-network-object)#nat (inside,outside) static 192.0.2.1 service udp 5070 5070

ciscoasa(config)# object network obj-10.0.0.2-04ciscoasa(config-network-object)# host 10.0.0.2

Cisco ASA Series Firewall ASDM Configuration Guide

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.

Cisco Systems ASA 5505, ASA 5545-X 20-2, Typical Cisco Unified Presence/LCS Federation Scenario

Models: ASA Services Module ASA 5555-X ASA 5545-X ASA 5585-X ASA 5580 ASA 5505

Figure 20-1 Typical Cisco Unified Presence/LCS Federation Scenario

Cisco ASA Series Firewall ASDM Configuration Guide

20-2

ASA Services Module, ASA 5555-X, ASA 5545-X, ASA 5585-X, ASA 5580 specifications