[WEBINAR] The New Normal: Dealing with the Reality of an Unsecure World

Port-to-Application Mapping

Definition - What does Port-to-Application Mapping mean?

Port-to-application mapping (PAM) is a Cisco IOS Firewall feature that allows users to create customized Transmission Control Protocol (TCP) or User Datagram Protocol (UDP) port numbers for network services or applications. PAM establishes a table of default port-to-application mapping information at firewalls using the respective port information. It also supports host or subnet port mapping, allowing users to apply PAM to a single host or subnet using a standard access control list.

Techopedia explains Port-to-Application Mapping

Information in a PAM table serves as a default mapping for traffic passing through firewalls. These tables are capable of identifying applications associated with port numbers, including services running on non-standard ports. The mapping information provided by entries in the PAM table includes system-defined port mapping, user-defined port mapping and host-specific port mapping.

By using host-specific port mapping, users can use the same port number for different services on different hosts. For example, it is possible to map port 8000 with Hypertext Transfer Protocol (HTTP) services for one host and map the same port with the telnet service for another host. These mappings permit the users to apply PAM to specific subnets when they run services using port numbers different from those specified in the default mapping information.

The ip port-map configuration command is used in establishing the port-to-application mapping. The no form of this command deletes the user-defined PAM entries.

Techopedia Deals

Connect with us

Techopedia on Linkedin
Techopedia on Linkedin
"Techopedia" on Twitter

Sign up for Techopedia's Free Newsletter!

Email Newsletter

Join thousands of others with our weekly newsletter

Free Whitepaper: The Path to Hybrid Cloud
Free Whitepaper: The Path to Hybrid Cloud:
The Path to Hybrid Cloud: Intelligent Bursting To Amazon Web Services & Microsoft Azure
Free E-Book: Public Cloud Guide
Free E-Book: Public Cloud Guide:
This white paper is for leaders of Operations, Engineering, or Infrastructure teams who are creating or executing an IT roadmap.
Free Tool: Virtual Health Monitor
Free Tool: Virtual Health Monitor:
Virtual Health Monitor is a free virtualization monitoring and reporting tool for VMware, Hyper-V, RHEV, and XenServer environments.
Free 30 Day Trial – Turbonomic
Free 30 Day Trial – Turbonomic:
Turbonomic delivers an autonomic platform where virtual and cloud environments self-manage in real-time to assure application performance.