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Chapter 20 Classifier
GS2200-24 User’s Guide
179
In the Internet Protocol there is a field, called “Protocol”, to identify the next level
protocol. The following table shows some common protocol types and the
corresponding protocol number. Refer to
http://www.iana.org/assignments/
protocol-numbers
for a complete list.
Some of the most common TCP and UDP port numbers are:
for information on commonly used port numbers.
NBS Internet
0802
ECMA Internet
0803
Chaosnet
0804
X.25 Level 3
0805
XNS Compat
0807
Banyan Systems
0BAD
BBN Simnet
5208
IBM SNA
80D5
AppleTalk AARP
80F3
Table 49
Common IP Protocol Types and Protocol Numbers
PROTOCOL TYPE
PROTOCOL NUMBER
ICMP
1
TCP
6
UDP
17
EGP
8
L2TP
115
Table 50
Common TCP and UDP Port Numbers
PROTOCOL NAME
TCP/UDP PORT NUMBER
FTP
21
Telnet
23
SMTP
25
DNS
53
HTTP
80
POP3
110
Table 48
Common Ethernet Types and Protocol Numbers
ETHERNET TYPE
PROTOCOL NUMBER