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Well-known protocol numbers   

The following are well-known protocol numbers used in filters.


Number Protocol
1
ICMP
2
IGMP
3
Gateway-Gateway Protocol (GGP)
6
TCP
8
Exterior Gateway Protocol
12
PARC Universal Packet Protocol (PUP)
17
UDP
20
Host Monitoring Protocol (HMP)
27
Reliable Datagram Protocol (RDP)
46
Reservation Protocol QOS (RSVP)
47
General Routing Encapsulation Protocol (PPTP Data over GRE)
50
Encapsulation Security Payload (ESP) IPSec
51
Authentication Header (AH) IPSec
66
MIT Remote Virtual Disk (RVD)
88
Internet Group management Protocol (IGMP)
89
Open Shortest Path First Protocol (OSPF)
112
Virtual Router Redundancy Protocol (VRRP)

See also:


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