Well-Known Ports

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Which ports are used for what

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Right: #
Wrong: #
# Right & # Wrong of #

20

TCP/FTP-Data/File Transfer Protocol-Data

21

TCP/ftp/File Transfer Protocol-Control

22

TCP/SSH/Secure Shell

23

TCP/Telnet/Telnet

25

TCP/smtp/Simple Mail Transfer Protocol

53

TCP-UDP/domain/DNS-Domain Name System

67

UDP/boottps/BOOTP-DHCP Server

68

UDP/bootpc/BOOTP-DHCP Client

80

TCP/http/HTTP

110

TCP/Pop3/Post Office Protocol

123

UDP/ntp/Network Time Protocol

137-139

UDP-TCP/netbt/NetBIOS over TCP-IP

143

TCP/imap4/Internet Mail Access Protocol

161

UDP/snmp/Simple Network Management Protocol

162

UDP/snmo-trap/ Simple Network Management Protocol Trap

389

TCP/ldap/Lightweight Directory Access Protocol

427

TCP/slp/Service Location Protocol

443

TCP/https/HTTP Secure

445

YCP/smb/Server Message Block-Common Internet File System

548

TCP/afp/Apple Filing Protocol

3389

TCP/rdp/Remote Destop Protocol