Configure Custom Applications
Table of Contents
Configure Custom Applications
Configure custom applications on Prisma SD-WAN
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Layer 3/Layer 4 Applications
- Select .Click Add Application.Enter a Display Name.A suggested application abbreviation displays in the Abbreviation field.Select Network (L3/L4) for Identification.For UDP Filter Rules, include a mandatory port number, an (optional) DSCP value between 0 to 63, and an (optional) prefix filter.Layer 3 or Layer 4 applications require a port number and a prefix filter.For TCP Filter Rules, include the server port number, (optional) DSCP value between 0 to 63, and (optional) server prefix filter. The list of decimal values for common DSCP names are:
Decimal Value Hex Value Meaning 0 0x00 Best effort (CS0 - Default) 8 0x08 CS1 10 0x0A AF11 12 0x0C AF12 14 0x0E AF13 16 0x010 CS2 18 0x012 AF21 20 0x014 AF22 22 0x016 AF23 24 0x018 CS3 26 0x01A AF31 28 0x01C AF32 30 0x01E AF33 32 0x020 CS4 34 0x022 AF41 36 0x024 AF42 38 0x026 AF43 40 0x028 CS5 46 0x02E Expedited forwarding (EF) 48 0x030 CS6 56 0x038 CS7 Prefix filters with respective ports are required for a custom application. Although it is possible to reuse prefix filters, the ports need to be unique for each custom application.For prefix filters, define one or more IP addresses or subnets. IP addresses within a prefix are defined by the subnet. For example, 10.1.1.0/24 defines the entire limit of 255 IP addresses in that subnet.For global prefix filters, enter an IP and subnet address and for local prefix filters, select a site in addition to entering an IP and subnet address.For IP Rules, choose a protocol, and enter a DSCP marking and a destination prefix filter.- Select a protocol from the Protocol drop-down. For example, GRE, or ICMP.(Optional) Enter a value in the range of 0 – 63 for DSP.Select a prefix filter from the Destination Prefix Filters drop-down.Up to eight destination prefixes may be added. You may add a new prefix filter by clicking Create New Filter, if prefix filters is not already defined.Select a prefix filter from the Source Prefix Filters drop-down.Up to eight destination prefixes may be added. You may add a new prefix filter by clicking Create New Filter, if prefix filters is not already defined.Select Apply.The new custom application displays under Custom Applications.
Layer 7 Applications
- Select .Click Add Application.A suggested application abbreviation displays in the Abbreviation field.Select Application L7 for Identification.For Domain, enter a domain name.Domain names are case sensitive. Ensure that the domain name matches the name displayed as per the Server Name Indication (SNI), so that Prisma SD-WAN detects the application as an L7 custom application.Layer 7 applications require a domain name or URL address. You may add up to 16 domain names. You can accomplish a wildcard match by specifying the parent domain. For example, if you have an application that leverages different sub-domains, a search for the parent domain produces a result with all sub-domains.From the App Category drop-down, select a category.From the Transfer Type drop-down, select transfer type to be Transactional, Bulk, Real-Time Audio, or Real-Time Video.The order in which the queues are serviced within a priority level is Real-time audio, Real-time video, Transactional, and Bulk. This selection directly impacts the queue in which the traffic is placed within a priority tier (Platinum, Gold, Silver, or Bronze), as defined in a policy rule.Enter an Ingress Traffic Percentage.Ingress traffic percentage is the amount of traffic in bytes for a given application received by the ION device in the WAN-to-LAN direction compared to the overall traffic for that application. This percentage determines the weight given to bandwidth capacity and utilization when the system makes path-selection decisions. For example, 50% would provide equal weight to both ingress and egress traffic.Enter Connection Idle Timeout in seconds.Timeout, in terms of resources allocated, is when an application flow is maintained in the system when there is no traffic flow for the application. After the specified timeout, the flow is deleted from the systemSet Path Affinity to Strict or None.
- Strict—If a path selected for a client session is available within a policy, subsequent application sessions from the same client for this application adheres to the originally-selected path.
- None—It is the opposite of strict. Each subsequent client session is free to take any path allowed by policy as long as that path is available within the service level agreement (SLA).
Use the Using Unreachability Detection option to monitor applications for reachability.Use application reachability to determine if an application is reachable on a given path. This information is useful when making path selection decisions. If an application is considered unreachable on a given path, then that path is not used. If all paths are marked unavailable, then one of the active paths is selected as defined in the application path policy.The ION device continuously monitors the communication between clients (on the LAN side) and servers (on the WAN side). If the ION device determines that a server is not responding to a client's messages on a given path, it triggers the application reachability feature. The ION device actively probes the server on that path to ensure that the server is reachable and responding.The ION device monitors communication only for the TCP flows initiated from the LAN side of the ION device. All TCP applications have unreachability detection enabled by default. When configuring a custom application, this feature can be disabled optionally.Enable Network Scan App to designate custom applications as network scan applications.This functionality is disabled by default. Enabling the attribute on an existing custom application applies only for new flows coming in and hitting the application after the configuration is made. Existing flows hitting the custom application do not inherit the configuration,Select Apply.The new custom application displays under Custom Applications.
