340
X4000
User’s Guide
Configuration of Security Functions and Firewall
10
The following table contains a list of some frequently used port numbers with
the services assigned to them:
Table 10-15: Services and port numbers
Example
A simplified FTP connection is used as an example to illustrate how to use
source and destination ports: In addition to source and destination IP
addresses, the IP protocol also uses source and destination port numbers to
Service
Protocol
Port number
File Transfer Protocol (
➤➤
FTP
) (data)
TCP
20
File Transfer Protocol (FTP) (commands)
TCP
21
Telnet
TCP
23
Simple Mail Transfer Protocol (SMTP)
TCP
25
Domain Name Server (
➤➤
DNS
)
TCP, UDP
53
Trivial File Transfer Protocol
(
➤➤
TFTP
)
UDP
69
HTTP
TCP
80
POP3 (e-mail inquiry)
TCP
110
Network Time Protocol
TCP, UDP
119
➤➤
NetBIOS
Name (NBNAME)
UDP
137
NetBIOS Datagram (NBDATA)
UDP
138
NetBIOS Session (NBSESSION)
TCP
139
Simple Network Management Protocol
(SNMP) (Port Lists)
UDP
161
SNMP (Trap Port)
UDP
162
Syslog Service (SYSLOG)
UDP
514
Network File System (NFS)
UDP
2049
Remote CAPI
TCP
2662
Remote TAPI
TCP
2663
Summary of Contents for X4000
Page 4: ...4 X4000 User s Guide...
Page 6: ...6 X4000 User s Guide Table of Contents...
Page 14: ...14 X4000 User s Guide Table of Contents...
Page 30: ...30 X4000 User s Guide Welcome 1...
Page 34: ...34 X4000 User s Guide General Safety Precautions 2...
Page 68: ...68 X4000 User s Guide Hardware Description and Installation 3...
Page 92: ...92 X4000 User s Guide Configuration Requirements 4...
Page 118: ...118 X4000 User s Guide Fast Configuration with the Configuration Wizard Basic Unit 6...
Page 362: ...362 X4000 User s Guide Configuration of Security Functions and Firewall 10...
Page 374: ...374 X4000 User s Guide Configuration Management 11...
Page 386: ...386 X4000 User s Guide Troubleshooting 12...
Page 433: ...X4000 User s Guide 433 15...
Page 449: ...X4000 User s Guide 449 15...
Page 468: ...468 X4000 User s Guide General Safety Precautions in 15 Different Languages 15...
Page 496: ...496 X4000 User s Guide Index...
Page 498: ...498 X4000 User s Guide Document 71000L Version1 3...