Multiplexing - IP Protocol
This page provides IP protocol information on the Multiplexing IP protocol (MUX) detected by the Netify DPI engine. Please see the IP protocol catalog for information on other IP protocols.
MUX is an early experimental protocol for multiplexing several logical data streams from different applications over a single network connection.
IP Protocol Details
- Name
- Multiplexing
- Abbreviation
- MUX
- Status
- Inactive
- IANA Number
- 18
- IANA Keyword
- MUX
- Network Policy
- Drop
- Reference
- Multiplexing
IP Protocol Status - Inactive
MUX was documented in IEN 90 (1979) by Danny Cohen and Jon Postel, and is a historical experiment, not used in modern networks.
IP Protocol Network Policy
IP protocol #18 - Multiplexing - 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.