Ip Header Number List - Watchguard Firebox X20E Reference Manual

Internet Protocol header
Attribute
Protocol
Check
Sour_Addr
Dest_Addr
Options

IP header number list

The IP Protocol header contains an 8-bit field that identifies the protocol for the
Transport layer for the datagram.
Keyword
ICMP
IGMP
GGP
IP
ST
TCP
UCL
EGP
IGP
BBN-RCC-MON
NVP-II
PUP
ARGUS
EMCON
XNET
CHAOS
UDP
MUX
DCN-MEAS
HMP
PRM
XNS-IDP
TRUNK-1
TRUNK-2
LEAF-1
LEAF-2
2
Size Description
8 bits IP protocol number. Indicates which of TCP , UDP , ICMP ,
IGMP , or other Transport protocol is inside.
16 bits Checksum for the IP header
32 bits Source IP address
32 bits Destination IP address
24 bits IP Options (Present if IHL is 6)
Number Protocol
0 Reserved
1 Internet Control Message
2 Internet Group Management
3 Gateway-to-Gateway
4 IP-within-IP (encapsulation)
5 Stream
6 Transmission Control Protocol
7 UCL
8 Exterior Gateway Protocol
9 Any private interior gateway
10 BBN RCC Monitoring
11 Network Voice Protocol
12 PUP
13 ARGUS
14 EMCON
15 Cross Net Debugger
16 Chaos
17 User Datagram Protocol
18 Multiplexing
19 DCN Measurement Subsystems
20 Host Monitoring
21 Packet Radio Measurement
22 XEROX NS IDP
23 Trunk-1
24 Trunk-2
25 Leaf-1
26 Leaf-2