IGP - IP Protocol
This page provides IP protocol information on the Generic Private Interior Gateway Protocol (IGP) detected by the Netify DPI engine. Please see the IP protocol catalog for information on other IP protocols.
IGP is a generic placeholder reserved for private interior gateway protocols, and was historically used to denote Cisco's proprietary IGRP distance-vector routing protocol.
IP Protocol Details
- Name
- Generic Private Interior Gateway Protocol
- Abbreviation
- IGP
- Status
- Active
- IANA Number
- 9
- IANA Keyword
- IGP
- Network Policy
- Drop
- Reference
- IGP
IP Protocol Status - Active
IGP was registered informally with IANA in the 1980s; IGRP itself was deprecated by Cisco in 2016 in favor of EIGRP and is no longer used.
IP Protocol Network Policy
IP protocol #9 - Generic Private Interior Gateway 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.