List of protocols

Built-in protocols — updated along with the SSG software version. Installing a new version requires a DPI reboot, which causes traffic interruption.
If needed, they can be supplemented with up-to-date attributes from the VAS Cloud. This is only necessary for complex protocols, but the option is available for all.
Cloud protocols created by VAS Experts — are periodically updated from the VAS Cloud. This ensures that popular applications remain up-to-date as their behavior changes. Description
Custom (user-defined) protocols — protocols created by users via the GUI using VAS Cloud tools. These have higher priority than those loaded from the VAS Cloud, and within them, IP:PORT takes precedence over IP and CIDR. It is possible to add a protocol based on IP, SNI, or AS. Guide.
DSL protocols — protocols described in the DSL language and connected to DPI as a separate module, without reinstalling the software or causing traffic interruption. Unlike custom protocols, a DSL protocol is a finite state machine that analyzes the first N packets of a flow against defined conditions (ports, AS numbers, payload bytes, DSL expressions) and determines whether the flow matches the protocol.
DSL protocols are created by VAS Experts specialists upon client request to Technical Support.

Protocol	ID	DPI version	Protocol group	Protocol type	Update	Description
plcy-net-svcs	4351	12.2	Network services	Built-in	As needed	Policy Network Services protocol enforces network access and bandwidth usage rules.
pjlink	4352	12.2	Tunneling, secure, ssl, pki	Built-in	As needed	PJLink is a standard protocol used to control projectors over a network, supporting encrypted command interfaces in professional AV systems.
f5-iquery	4353	12.2	Application servers	Built-in	As needed	F5-iQuery is used for encrypted communication and synchronization between BIG-IP systems.
qsnet-trans	4354	12.2	Application servers	Built-in	As needed	QSNet-Trans is a transmission control protocol for high-throughput encrypted data delivery.
qsnet-workst	4355	12.2	Video, pictures	Built-in	As needed	QSNet-Workst is a media transfer protocol used in high-performance video broadcast systems.
qsnet-assist	4356	12.2	Tunneling, secure, ssl, pki	Built-in	As needed	QSNet-Assist is a tunneling support protocol used in high-performance computing clusters.
qsnet-cond	4357	12.2	Instant messengers	Built-in	As needed	QSNet-Cond handles conditional delivery of messages and alerts in secure military systems.
qsnet-nucl	4358	12.2	Network services	Built-in	As needed	Q-SNet Nuclear sync protocol used in radiation or environmental sensor clusters.
omabcastltkm	4359	12.2	Application servers	Built-in	As needed	OMABCastLTKM is a mobile broadcast key management protocol used in secure content delivery.
matrix_vnet	4360	12.2	Network services	Built-in	As needed	Matrix_VNet syncs control routing for AV matrix switchers in video broadcast systems.
nacnl	4361	12.2	Network services	Built-in	As needed	Used in name and connection lookup operations within distributed registries.
afore-vdp-disc	4362	12.2	Network services	Built-in	As needed	A protocol for Afore VDP Discovery, discovering virtual data points in Afore systems.
wxbrief	4368	12.2	Tunneling, secure, ssl, pki	Built-in	As needed	WXBrief is a weather briefing protocol used by aviation systems to securely access and distribute meteorological data.
epmd	4369	12.2	Printing	Built-in	As needed	Erlang Port Mapper Daemon
elpro_tunnel	4370	12.2	Printing	Built-in	As needed	A service for tunneling or securing print data between networked printers and devices, in an Elpro system.
l2c-control	4371	12.2	Printing	Built-in	As needed	Layer 2 communication for print jobs over a network.
l2c-disc	4371	12.2	Printing	Built-in	As needed	Related to Layer 2 (L2) disconnect, managing disconnection or reconnection of print devices.
l2c-data	4372	12.2	Video, pictures	Built-in	As needed	L2C-Data protocol is used for secure location-based content delivery in GPS-enabled multimedia applications.
remctl	4373	12.2	Network services	Built-in	As needed	Remote Control protocol from Stanford for secure execution of predefined remote commands.
psi-ptt	4374	12.2	Application servers	Built-in	As needed	PSI-PTT is a push-to-talk signaling protocol used in enterprise radio and mobile apps.

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