FTP port
TCP/20, TCP/21
SSH port
TCP/22
Telnet port
Tcp/23
SMTP port
Tcp/25
DNS port
Udp/53, tcp/53
DHCP port
Udp/67, udp/68
HTTP port
Tcp/80
HTTPS port
Tcp/443
POP3 port
Tcp/110
IMAP4 port
Tcp/143
NetBIOS name service port
Udp/137
NetBIOS session service port
Tcp/139
SMB port
Tcp/445
SNMP Query port
Udp/161
SNMP trap port
Udp/162
LDAP port
Tcp/389
RDP port
Tcp/3389
FTP
File transfer protocol
SSH
Secure shell
Telnet
Telecommunication Network
SMTP
Simple mail transfer protocol
DNS
Domain name system
DHCP
Dynamic host configuration protocol
HTTP
Hypertext transfer protocol
HTTPS
Hypertext transfer protocol secure
POP3
Post office protocol version 3
IMAP4
Internet message access protocol version 4
SMB
Server message block
SNMP
Simple network management protocol
LDAP
Lightweight directory access protocol
RDP
Remote desktop protocol
FTP description
Sends and receives files between systems
SSH description
Encrypted console access
Telnet description
Insecure console access
SMTP description
Transfer email between mail servers
DNS description
Convert domain names to IP addresses
DHCP description
Automated the IP address configuration process
HTTP description
Web server communication unsecure
HTTPS description
Web server communication with encryption
POP3 description
Receive email into a email client
IMAP4 description
A newer email client protocol
NetBIOS name service description
Register, remove, and find Windows services by name
NetBIOS session service description
Windows connection-oriented data transfer
SMB description
Windows file transfers and printer sharing
SNMP Query description
Gather metrics and manage network devices
SNMP trap description
Recieve alerts from network devices
LDAP description
Directory services
RDP description
Graphical display of remote devices