Trunk-1 Protocol
This page provides IP protocol information on the Trunk-1 Protocol (TRUNK-1) detected by the Netify DPI engine. Please see the IP protocol catalog for information on other IP protocols.
Trunk-1 is a protocol used for trunk-line signaling in early experimental packet-switched network research led by Barry Boehm's group.
IP Protocol Details
- Name
- Trunk-1 Protocol
- Abbreviation
- TRUNK-1
- Status
- Inactive
- IANA Number
- 23
- IANA Keyword
- TRUNK-1
- Network Policy
- Drop
- Reference
- Trunk-1 Protocol
IP Protocol Status - Inactive
Trunk-1 is a little-documented early network protocol, and is historical, with no known current use.
IP Protocol Network Policy
IP protocol #23 - Trunk-1 Protocol - is typically dropped by edge routers and firewalls. Advanced threat actors and malware families can use these non-standard IP protocol numbers for lateral movement (east-west communication) inside internal networks.