292
BinTec Communications AG
Security Mechanisms
7
Table 7-16:
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 address-
es, the IP protocol also uses source and destination port numbers to uniquely
identify data connections. The FTP client creates a number, e.g.
xyz
, which is
used as source port. As destination port, the client uses the number under
which the FTP server offers the FTP service, e.g.
21
. The FTP server then an-
swers with IP packets that use
21
as source port and
xyz
as destination port:
SNMP (Trap Port)
UDP
162
Syslog Service (SYSLOG)
UDP
514
Network File System (NFS)
UDP
2049
Remote CAPI
TCP
2662
Remote TAPI
TCP
2663
Service
Protocol
Port number
Содержание X3200
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Страница 258: ...258 BinTec Communications AG Advanced Configuration 6...
Страница 348: ...348 BinTec Communications AG Technical Data 10...
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Страница 394: ...394 BinTec Communications AG General Safety Precautions in 15 Different Languages 12...
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Страница 419: ...X3200 User s Guide 419 Index WINS 210 229 X X 31 TEI 182...