List of protocols

  1. 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.
  2. 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
  3. 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.
  4. 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.

ProtocolIDDPI versionProtocol groupProtocol typeUpdateDescription
dn6-nlm-aud19512.2Network servicesBuilt-inAs neededA protocol for DNSv6 Network License Manager Audit, tracking license usage in IPv6 networks.
dn6-smm-red19612.2Network servicesBuilt-inAs neededA protocol for DNSv6 System Management Module Redirect, managing IPv6 DNS traffic.
dls19712.2Network servicesBuilt-inAs neededData Link Switching protocol bridges SNA frames over IP networks.
dls-mon19812.2Debugging and measurementBuilt-inAs neededDLS-Mon (Dynamic Load System Monitor) checks server loads and resource availability in encrypted environments.
smux19912.2Network servicesBuilt-inAs neededSNMP Multiplex protocol allows multiple subagents to coexist within an SNMP agent framework.
src20012.2Debugging and measurementBuilt-inAs neededSRC (Session Resource Controller) manages network session tracking and usage reporting.
at-rtmp20112.2Instant messengersBuilt-inAs neededAT-RTMP enables Real-Time Messaging Protocol transport in Apple video streaming workflows.
at-nbp20212.2Instant messengersBuilt-inAs neededAT-NBP (Name Binding Protocol) is a legacy AppleTalk protocol for service name discovery.
at-echo20412.2Instant messengersBuilt-inAs neededAT-Echo is a legacy AppleTalk diagnostic protocol used to test reachability and latency.
at-zis20612.2Instant messengersBuilt-inAs neededAT-ZIS is a zero-initiation sync used in Apple collaboration environments for state resolution.
qmtp20912.2E-MailBuilt-inAs neededQMTP (Quick Mail Transfer Protocol) is a fast, secure email transfer protocol for large-volume mail systems.
z39.5021012.2Application serversBuilt-inAs neededZ39.50 is a standard protocol for searching and retrieving information from remote databases, used in libraries.
914c/g21112.2Remote controlBuilt-inAs neededTexas Instruments 914C/G Terminal
anet21212.2Network servicesBuilt-inAs neededA protocol for ANet (Access Network), providing general access network services.
ipx21312.2Network servicesBuilt-inAs neededA protocol for IPX (Internetwork Packet Exchange), a Novell networking protocol.
vmpwscs21412.2VirtualizationBuilt-inAs neededVM PWSCS (IANA official)
softpc21512.2Network servicesBuilt-inAs neededSoftPC remote desktop and virtualization protocol used in early terminal emulators.
CAIlic21612.2Application serversBuilt-inAs neededCAILIC is a license manager for terminal emulation and legacy system access tools.
dbase21712.2PrintingBuilt-inAs neededA database printing service for managing print jobs and output from a database system.
mpp21812.2E-MailBuilt-inAs neededMPP (Multi-Purpose Protocol) is used in gaming and media systems for secure state sync and chat.
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