Ports and Protocols Flashcards
FTP
21
TCP
File Transfer Protocol is used to transfer files from host to host
SSH, SCP, SFTP
22
TCP/UDP
Secure Shell is used to remotely administer network devices and systems. SCP is used for secure copy and SFTP for secure FTP.
Telnet
23
TCP/UDP
Unencrypted method to remotely administer network devices (should not be used)
SMTP
25
TCP
Simple Mail Transfer Protocol is used to send email over the Internet
DNS
53
TCP/UDP
Domain Name Service is used to resolve hostnames to IPs and IPs to hostnames
TFTP
69
UDP
Trivial FTP is used as a simplified version of FTP to put a file on a remote host, or get a file from a remote host
HTTP
80
TCP
Hyper Text Transfer Protocol is used to transmit web page data to a client for unsecured web browsing
Kerberos
88
TCP/UDP
Used for network authentication using a system of tickets within a Windows domain
POP3
110
TCP
Post Office Protocol v3 is used to receive email from a mail server
NNTP
119
TCP
Network News Transfer Protocol is used to transport Usenet articles
RPC/DCOM-scm
135
TCP/UPD
Remote Procedure Call is used to located DCOM ports request a service from a program on another computer on the network
NetBIOS
137 - 139
TCP/UDP
NetBIOS is used to conduct name querying, sending of data, and other functions over a NetBIOS connection
IMAP
143
TCP
Internet Message Access Protocol is used to receive email from a mail server with more features than POP3
SNMP
161
UDP
Simple Network Management Protocol is used to remotely monitor network devices
SNMPTRAP
162
TCP/UDP
Used to send Trap and InformRequests to the SNMP Manager on a network