Ports Flashcards
Telnet telecommunication network
TCP 23, telecommunication network. Doesn’t encrypt data.
SSH secure shell
TCP 22, like telnet but secure, encrypts data
DNS domain name system
UDP 53, converts names to IP addresses
SMTP simple mail transfer protocol
TCP 25, simple mail transfer server to server
SFTP secure file transfer protocol, otherwise known as SSH
TCP 22, uses SSH to make happen. File transfers.
FTP file transfer protocol
TCP 20 (active mode transfer), 21 (control).
TFTP trivial file transfer protocol
UDP 69
DHCP dynamic host configuration protocol
UDP 67, 68. Automated configuration of IP addresses. Requires DHCP server.
HTTP hypertext transfer protocol
TCP 80, Web server communication
HTTPS hypertext transfer protocol secure
TCP 443
SNMP simple network management protocol
UDP 161, gathers stats from network devices
RDP Remote Desktop protocol
TCP 3389
NTP network time protocol
UDP 123
SIP session initiation protocol
TCP 5060, 5061 (VOIP voice over internet protocol, IP telephony)
SMB server message block
TCP 445, also known as CIFS (common internet file system)
POP
TCP 110, receive emails from server
IMAP4 internet mail access protocol
TCP 143, storing and receiving emails from simple mail transfer
LDAP lightweight directory access protocol
TCP 389, enables anyone to locate data about organisations, individuals, and resources like files and devices in a network whether on the public internet or a corporate intranet
LDAPS lightweight directory access protocol secure
TCP 636, secure LDAP, allows encryption
H.323
TCP 1720, set up and manage VOIP sessions
TCP 23
Telnet
TCP 22
SSH, SFTP
UDP 53
DNS
TCP 25
SMTP
