Well-Known Ports Flashcards
ports
allows computers to send data out while simultaneously identifying data by category
port range
1-1024
FTP-TCP
20-21
//transfer computer files from one host to another over TCP, client-server architecture
SSH -TCP
22
//Secure Socket Shell, UNIX-based command for securely getting access to a remote computer
Telnet- TCP
23
//allows user on one computer to log onto another computer on the same NW
SMTP
25
//simple mail transfer protocol, internet standard for email transmission
WINS
42
//used to identify & locate computers to resolve names for use on NW
DNS (TCP/UDP)
53
//internet domain names are located & translated into IP addresses
HTTP
80,8080
//Hypertext Transfer Protocol, standard for transferring hypertext documents on the WWW (world wide web)
Kerberos TCP/UDP
computer NW authentication protocol 88
//secure method for authenticating a request for a service in a computer NW
POP3 TCP
110
//protocol for receiving email by DL’ing it to your cmoputer from a mailbox on the server of an ISP (internet service provider)
Portmapper-Linux
Makes RPC calls 111
NTP
123
//used to synchronize computer clock times in a NW of computers
RPC TCP
135
NETBIOS TCP/UDP
137-139
//used by DOS & Windows to share files
IMAP TCP
143
//Internet Message Access Protocol (app layer) allows email client to access emails on remote email server
SNMP-UDP
161,162
//Simple NW MGMT protocol, Monitor NW devices & trap messages
LDAP
389
//Lightweight Directory Access Protocol, standard used to query & organize DBs
CIFS ///// HTTPS TCP
Common internet file system (sharing files internally) 443
//standard for users to share files across corporate intranets & internets
Syslog
514
//standard for message logging
Secure LDAP
636
TFTP- UDP
69
SMB TCP
445
BGP
179
DHCP UDP
67
