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
bootps/dhcp	67	12.2	Network services	Built-in	As needed	A protocol for BOOTP Server/DHCP, assigning IP addresses dynamically.
bootpc	68	12.2	Network services	Built-in	As needed	A protocol for BOOTP Client, requesting IP addresses in networks.
tftp	69	12.2	Data transfer	Built-in	As needed	TFTP (Trivial File Transfer Protocol) is a lightweight, unencrypted protocol for transferring files over LAN.
gopher	70	12.2	Data transfer	Built-in	As needed	Gopher is a pre-HTTP document retrieval protocol supporting structured navigation over TCP.
netrjs-1	71	12.2	Remote control	Built-in	As needed	Remote job submission protocol.
netrjs-2	72	12.2	Remote control	Built-in	As needed	Another variant of remote job submission.
netrjs-3	73	12.2	Remote control	Built-in	As needed	Variant of remote job submission.
netrjs-4	74	12.2	Remote control	Built-in	As needed	Another remote job submission protocol.
deos	76	12.2	Data bases	Built-in	As needed	DEOS is a deterministic OS protocol that can synchronize secure DB activity in avionics or robotics.
vettcp	78	12.2	Network services	Built-in	As needed	VetTCP protocol validates TCP traffic integrity in custom firewalls or IPS systems.
finger	79	12.2	Network services	Built-in	As needed	A protocol for Finger, a user information lookup service over networks.
xfer	82	12.2	Debugging and measurement	Built-in	As needed	XFER is a generic label used for data transfer operations, typically in backup, replication, or FTP-like scenarios. It often appears in legacy systems to denote a file or block transmission routine.
mit-ml-dev	83	12.2	Network services	Built-in	As needed	MIT-ML-Dev is a secure messaging protocol for machine learning experimentation platforms.
ctf	84	12.2	Network services	Built-in	As needed	A protocol for CTF (Common Trace Facility), tracing data in networks.
mfcobol	86	12.2	Network services	Built-in	As needed	MFCobol provides COBOL-based license control and telemetry for secure business logic apps.
kerberos	88	12.2	Data transfer	Built-in	As needed	Kerberos is a network authentication protocol using encrypted tickets to verify identity.
su-mit-tg	89	12.2	Remote control	Built-in	As needed	SU/MIT Telnet Gateway (IANA official)
dnsix	90	12.2	Network services	Built-in	As needed	Department of Defense DNSIX protocol used for secure audit, identification, and authentication telemetry.
mit-dov	91	12.2	Network services	Built-in	As needed	MIT-DOV manages secure digital overlays in academic or simulation tools.
npp	92	12.2	Printing	Built-in	As needed	"Network Print Protocol" used in managing print jobs or communications with networked printers.

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