Protocols & Ports Flashcards
SSH
Secure Shell
TCP Port 22
DNS
Domain Name System
TCP/UDP Port 53
SMTP
Simple Mail Transfer Protocol
TCP Port 25
SFTP
Secure (SSH) File Transfer Protocol
TCP Port 22 (see SSH)
FTP
File Transfer Protocol
TCP
Port 20 (data), 21 (command/control)
TFTP
Trivial File Transfer Protocol
UDP Port 69
Telnet
TELetype NETwork
TCP Port 23
DHCP
Dynamic Host Configuration Protocol
UDP Ports 67, 68
DORA (Discover, Offer, Request, Acknowledge)
HTTP
Hypertext Transfer Protocol
TCP port 80
(HTTP/3 uses QUIC, a transport protocol on top of UDP)
HTTPS
Hypertext Transfer Protocol Secure
TCP port 443
(HTTP/3 uses QUIC, a transport protocol on top of UDP)
SNMP
Simple Network Message Protocol
UDP Port 161 (162 TRAP)
RDP
Remote Desktop Protocol (Microsoft Terminal Server)
TCP/UDP port 3389
NTP
Network Time Protocol
UDP port 123
SIP
Session Initiation Protocol
TCP/UDP port 5060 (5061 over TLS)
SMB
(Microsoft Directory Services) Active Directory, Windows shares, file sharing, Server Message Block
TCP port 445