Common TCP/UDP Ports Flashcards
Port 20/21: Which Protocol? TCP or UDP?
FTP = File Transfer Protocol, TCP
Port 22: Which Protocol? TCP or UDP?
SSH = Secure Shell, TCP
Port 23: Which Protocol? TCP or UDP?
Telnet, TCP
Port 25: Which Protocol? TCP or UDP?
SMTP= Simple Mail Transfer Protocol, TCP
Port 53: Which Protocol? TCP or UDP?
DNS = Domain Name System, TCP/UDP
Port 67/68: Which Protocol? TCP or UDP?
DHCP = Dynamic Host Configuration Protocol, UDP
Port 69: Which Protocol? TCP or UDP?
TFTP = Trivial File Transfer Protocol, UDP
Port 80: Which Protocol? TCP or UDP?
HTTP = Hypertext Transfer Protocol, TCP
Port 110: Which Protocol? TCP or UDP?
POP3 = Post Office Protocol, TCP
Port 123: Which Protocol? TCP or UDP?
NTP = Network Time Protocol, UDP
Port 137/138/139: Which Protocol? TCP or UDP?
Net Bios, TCP/UDP
Port 143: Which Protocol? TCP or UDP?
IMAP = Internet Message Access Protocol, TCP
Port 161/162: Which Protocol? TCP or UDP?
SNMP = Simple Network Management Protocol, TCP/UDP
Port 179: Which Protocol? TCP or UDP?
BGP = Border Gateway Protocol, TCP
Port 389: Which Protocol? TCP or UDP?
LDAP = Lightweight Directory Access Protocol, TCP/UDP