20-3, Sip/Tls | Cisco Systems ASA 5545-X, ASA 5505, ASA 5555-X

Chapter 20 Configuring Cisco Unified Presence

Information About Cisco Unified Presence

ciscoasa(config-network-object)#nat (inside,outside) static 192.0.2.1 service tcp 5060 5060

For another Cisco UP with the address 10.0.0.3, you must use a different set of PAT ports, such as 45062 or 45070:

ciscoasa(config)# object network	obj-10.0.0.3-01
ciscoasa(config-network-object)#	host 10.0.0.3
ciscoasa(config-network-object)#	nat (inside,outside) static 192.0.2.1 service tcp 5061
45061
ciscoasa(config)# object network	obj-10.0.0.3-02
ciscoasa(config-network-object)#	host 10.0.0.3
ciscoasa(config-network-object)#	nat (inside,outside) static 192.0.2.1 service tcp 5062
45062
ciscoasa(config)# object network	obj-10.0.0.3-03
ciscoasa(config-network-object)#	host 10.0.0.3
ciscoasa(config-network-object)#	nat (inside,outside) static 192.0.2.1 service udp 5070
5070
ciscoasa(config)# object network	obj-10.0.0.2-03
ciscoasa(config-network-object)#	host 10.0.0.2
ciscoasa(config-network-object)#	nat (inside,outside) static 192.0.2.1 service tcp 5070
45070
ciscoasa(config)# object network	obj-10.0.0.3-04
ciscoasa(config-network-object)#	host 10.0.0.3
ciscoasa(config-network-object)#	nat (inside,outside) static 192.0.2.1 service tcp 5060
45060

Dynamic NAT or PAT can be used for the rest of the outbound connections or the TLS handshake. The ASA SIP inspection engine takes care of the necessary translation (fixup).

ciscoasa(config)# object network obj-0.0.0.0-01

ciscoasa(config-network-object)# subnet 0.0.0.0 0.0.0.0

ciscoasa(config-network-object)#nat (inside,outside) dynamic 192.0.2.1

Figure 20-2illustrates an abstracted scenario with Entity X connected to Entity Y through the presence federation proxy on the ASA. The proxy is in the same administrative domain as Entity X. Entity Y could have another ASA as the proxy but this is omitted for simplicity.

Figure 20-2 Abstracted Presence Federation Proxy Scenario between Two Server Entities

Enterprise X

Enterprise Y

Entity X

Inside

ASA	Outside	SIP/TLS	Entity Y
TLS Proxy		Internet	Entity Y
TLS Proxy		Internet

10.0.0.210.0.0.1

192.0.2.1	192.0.2.254
192.0.2.2

Enterprise Y Firewall omitted

271638

For the Entity X domain name to be resolved correctly when the ASA holds its credential, the ASA could be configured to perform NAT for Entity X, and the domain name is resolved as the Entity X public address for which the ASA provides proxy service.

For further information about configuring Cisco Unified Presence Federation for SIP Federation, see the Integration Guide for Configuring Cisco Unified Presence for Interdomain Federation.:

Cisco ASA Series Firewall ASDM Configuration Guide

20-3

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 5545-X, ASA 5505, ASA 5555-X, ASA 5585-X, ASA 5580 manual 20-3, Sip/Tls

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

Figure 20-2illustrates an abstracted scenario with Entity X connected to Entity Y through the presence federation proxy on the ASA. The proxy is in the same administrative domain as Entity X. Entity Y could have another ASA as the proxy but this is omitted for simplicity.

Figure 20-2 Abstracted Presence Federation Proxy Scenario between Two Server Entities

SIP/TLS

Cisco ASA Series Firewall ASDM Configuration Guide

20-3

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