Definitions for applications are under Networking > App Definitions: Applications.

Application definitions let you assign business relevance to network traffic. Appliances come with many default definitions, which you can edit or expand as needed. These definitions are organized into application groups, such as Business Standard, Business Critical, Business Video, and Recreational.

Using application definitions helps simplify appliance configuration. Each definition can include details like local and remote subnet addresses, protocols, VLAN tag ID, DSCP values, whether the traffic should be optimized or passed through, and its group, category, and business criticality.

Application groups make it easy to apply rules to multiple applications at once, rather than setting up rules for each one individually. We strongly recommend that you define your applications and push those definitions from an SCC to all managed appliances.

Enter the application traffic’s source subnet IP address and mask, or enter a predefined host label. You can enter wildcards all or 0.0.0.0/0 for all traffic.

If needed, enter a port number or predefined port label. Port ranges are allowed.

Same as for local subnet and port, except enter values for the application traffic’s destination.

Select a transport layer protocol. The default is All.

Enter an application layer protocol or an application definition.

VLAN v802.1Q is supported. Configure transport rules to apply to all VLANs or to a specific VLAN. By default, rules apply to all VLAN values unless you specify a particular VLAN ID. Pass-through traffic maintains any preexisting tagging between the LAN and WAN interfaces.

Optionally, specify a DSCP value from 0 to 63, or all to use all DSCP values.

Select Optimized, Passthrough, or All from the drop-down list. The default setting is All.

Captures business-level file transfer applications and protocols, such as CIFS, SCCM, antivirus updates, and over-the-network backup protocols.

Captures business-level, low-latency transactional applications and protocols, such as SQL, SAP, Oracle and other database protocols, DHCP, LDAP, RADIUS, the Riverbed Control Channel (to identify and specify a DSCP value for out-of-band traffic), routing, and other network communication protocols.

Captures general business-level productivity applications and protocols, such as email, messaging, streaming and broadcast audio/video, collaboration, intranet HTTP traffic, and business cloud services O365, Google apps, SFDC, and others through a white list.

Captures all intranetwork traffic going within local subnets as defined by the uplinks on the SteelHead. Use this class to define the default path for traffic not classified by other application groups.

Captures real-time interactive business-level virtual desktop interface (VDI) protocols, such as PC over IP (PCoIP), Citrix CGP and ICA, RDP, VNC, and Telnet protocols.

Captures business-level video conferencing applications and protocols, such as Microsoft Lync and RTP video.

Captures business-level voice over IP (VoIP) applications and protocols (signaling and bearer), such as Microsoft Lync, RTP, H.323 and SIP.

Captures all Internet-bound traffic that has not already been classified and processed by other application groups.

Captures general file transfer protocols, such as FTP, torrents, NNTP/usenet, NFS, and online file hosting services Dropbox, Box.net, iCloud, MegaUpload, Rapidshare, and others.

Captures user-defined applications that have not been classified into another application group.

Specifies the lowest priority service class.

Specifies a low-priority service class (for example, FTP, backup, replication, other high-throughput data transfers, and recreational applications such as audio file sharing).

Specifies a medium-priority service class.

Specifies a high-priority service class.

Specifies the highest priority service class.

These are minimum service class guarantees; if better service is available, it’s provided. The service class describes only the delay sensitivity of a class, not how much bandwidth it’s allocated. Typically, you set low priority for high-throughput, non packet-delay sensitive applications like FTP, backup, and replication.