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
uarps	219	12.2	Network services	Built-in	As needed	UDP ARP Sync protocol mirrors address resolution entries across local subnets.
imap3	220	12.2	E-Mail	Built-in	As needed	IMAP3 is an older email access protocol, replaced by IMAP4 for folder and message sync.
fln-spx	221	12.2	Remote control	Built-in	As needed	a Novell SPX-based file network service.
rsh-spx	222	12.2	Remote control	Built-in	As needed	Remote Shell over SPX protocol (Novell NetWare).
cdc	223	12.2	Application servers	Built-in	As needed	CDC (Change Data Capture) protocol is used for tracking and syncing database changes securely.
masqdialer	224	12.2	Instant messengers	Built-in	As needed	MasqDialer handles encrypted PPP session dialup and routing configuration.
direct	242	12.2	Network services	Built-in	As needed	A protocol for direct data exchange, a generic networking service.
sur-meas	243	12.2	Network services	Built-in	As needed	Surveillance Measurement protocol gathers environmental or security sensor data.
inbusiness	244	12.2	Network services	Built-in	As needed	A protocol for InBusiness, managing business operations in networked systems.
link	245	12.2	Network services	Built-in	As needed	Link protocol handles low-level connectivity and handshake telemetry in embedded links.
dsp3270	246	12.2	Remote control	Built-in	As needed	IBM 3270 terminal emulation.
subntbcst_tftp	247	12.2	Data transfer	Built-in	As needed	SubNTBcast-TFTP is a broadcast-based TFTP extension used in subnet-based firmware delivery.
bhfhs	248	12.2	Network services	Built-in	As needed	A protocol for BHFHS (Business Host Fieldbus High-Speed), supporting high-speed fieldbus.
set	257	12.2	Transactions, banking, trading	Built-in	As needed	SET (Secure Electronic Transaction) is a protocol developed by Visa and MasterCard for encrypted credit card payments.
esro-gen	259	12.2	Remote control	Built-in	As needed	Efficient Short Remote Operations
openport	260	12.2	Network services	Built-in	As needed	OpenPort is a secure document delivery protocol used for remote printing and secure mailing.
nsiiops	261	12.2	Network services	Built-in	As needed	NSIIOPS is a secure CORBA object access protocol over IIOP and SSL.
arcisdms	262	12.2	Network services	Built-in	As needed	A protocol for ARC Information Services DMS, managing document or data services.
hdap	263	12.2	Network services	Built-in	As needed	A protocol for High-Definition Audio Protocol, for audio streaming.
bgmp	264	12.2	Network services	Built-in	As needed	A protocol for Border Gateway Multicast Protocol, extending BGP for multicast routing.

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