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計測機器でよく使われる TCP と UDP のポート番号

Last updated at Posted at 2023-09-25

TCP と UDP では宛先アプリケーションを識別するため 1 番から 65535 番までのポート番号が使われます。1つのアプリケーションで複数のポート番号を使う事もできます。いくつかのポート番号は「一般的に知られているポート番号」(ウェルノウン・ポート、well - known port number)として特定のアプリケーション・サービスに割り当てられています。

この記事では制御機器や計測機器でよく使われるウェルノウン・ポートを示します。
IANA > Service Name and Transport Protocol Port Number Registry

サービス名 ポート番号 プロトコル 説明
FTP-data 20 tcp File Transfer(Default Data)
FTP 21 tcp File Transfer(Control)
SSH 22 tcp SSH Remote Login Protocol
Telnet 23 tcp TELNET
SMTP 25 tcp Simple Mail Transfer
DNS 53 udp Domain Name Server
DHCPv4-server 67 udp Bootstrap Protocol Server(DHCP)
DHCPv4-client 68 udp Bootstrap Protocol Client(DHCP)
HTTP 80 tcp World Wide Web HTTP
POP3 110 tcp Post Office Protocol-Version 3
VXI-11 111 tcp/udp VXI-11の特徴
SNTP 123 udp Network Time Protocol
NetBIOS-ns 137 tcp/udp NetBIOS Name Service
NetBIOS-dgm 137 udp NetBIOS Datagram Service
NetBIOS-ssn 139 tcp NetBIOS Session Service
PTP-event 319 udp PTP Event
PTP-general 320 udp PTP General
HTTPS 443 tcp http protocol over TLS/SSL
Modbus 502 tcp Modbus Application Protocol
DHCPv6-client 546 udp DHCPv6 Client
DHCPv6-server 547 udp DHCPv6 Server
FTPS-data 989 tcp file data over TLS/SSL
FTPS 990 tcp file control over TLS/SSL
POP3S 995 tcp POP3 over TLS protocol
HiSLIP 4880 tcp IVI High-Speed LAN Instrument Protocol
Scpi-raw 5025 tcp IEEE 488.2 (SCPI) Socket
Scpi-telnet 5024 tcp IEEE 488.2 (SCPI) Telnet
LXI-eventsvc 5044 udp LXI Event Service
mDNS 5353 udp Multicast DNS
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