App-1
IM 720120-01E
Appendix
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App
Index
Appendix
Appendix 1 TCP and UDP Port Numbers Used in
Ethernet Communications
The TCP and UDP port numbers that the SL1000 Ethernet interface uses are as follows:
TCP Port Numbers That the SL1000 Uses
Port Number Description
Function
20
File Transfer [Default Data]
FTP server
21
File Transfer [Control]
FTP server
25
Simple Mail Transfer Protocol
SMTP client
111
VXI-11
SL1000 control via the Ethernet interface
1024
1025
UDP Port Numbers That the SL1000 Uses
Port Number Description
Function
67
Bootstrap Protocol Server
DHCP client
68
Bootstrap Protocol Client
(receive wait port)
123
Network Time Protocol
SNTP client
111
VXI-11
SL1000 control via the Ethernet interface