Ports Flashcards
21 TCP
FTP
File Transfer Protocol is used to transfer files from host to host
22 TCP/UDP
SSH
Secure Shell is used to remotely administer network devices and systems
22 TCP/UDP
SCP is used for secure copy
22 TCP/UDP
SFTP for secure FTP
23 TCP/UDP
Telnet
Unencrypted method to remotely administer network devices (should not be used)
25 TCP
SMTP
Simple Mail Transfer Protocol is used to send email over the Internet
53 TCP/UDP
DNS
Domain Name Service is used to resolve hostnames to IPs and IPs to hostnames
69 UDP
TFTP
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
80 TCP
HTTP
Hyper Text Transfer Protocol is used to transmit web page data to a client for unsecured web browsing
88 TCP/UDP
Kerberos
Used for network authentication using a system of tickets within a Windows domain
110 TCP
POP3
Post Office Protocol v3 is used to receive email from a mail server
110 TCP
POP3
Post Office Protocol v3 is used to receive email from a mail server
119 TCP
NNTP
Network News Transfer Protocol is used to transport Usenet articles
135 TCP/UDP
RPC/DCOMscm
Remote Procedure Call is used to locate DCOM ports request a service from a program on another computer on the network
137-139 TCP/UDP
NetBIOS
NetBIOS is used to conduct name querying, sending of data, and other functions over a NetBIOS connection
143 TCP
IMAP
Internet Message Access Protocol is used to receive email from a mail server with more features than POP3
161 UDP
SNMP
Simple Network Management Protocol is used to remotely monitor network devices
162 TCP/UDP
SNMPTRAP
Used to send Trap and InformRequests to the SNMP Manager on a network
389 TCP/UDP
LDAP
Lightweight Directory Access Protocol is used to maintain directories of users and other objects
443 TCP
HTTPS
Hyper Text Transfer Protocol Secure is used to transmit web page data to a client over an SSL/TLS-encrypted connection
445 TCP
SMB
Server Message Block is used to provide shared access to files and other resources on a network
465/587 TCP
SMTP with SSL/TLS
Simple Mail Transfer Protocol used to send email over the Internet with an SSL and TLS secured connection
514 UDP
Syslog
Syslog is used to conduct computer message logging, especially for routers and firewall logs
636 TCP/UDP
LDAP SSL/TLS
LDAP is used to maintain directories of users and other objects over an encrypted SSL/TLS connection
860 TCP
iSCSI
iSCSI is used for linking data storage facilities over IP
989/990 TCP
FTPS
File Transfer Protocol Secure is used to transfer files from host to host over an encrypted connection
993 TCP
IMAP4 with SSL/TLS
Internet Message Access Protocol is used to receive email from a mail server over an SSL/TLSencrypted connection
995 TCP
POP3 (SSL/TLS)
Post Office Protocol v3 is used to receive email from a mail server using an SSL/TLS-encrypted connection
1433 TCP
Ms-sql-s
Microsoft SQL server is used to receive SQL database queries from clients
1645/1646 UDP
RADIUS (Alternative)
Remote Authentication Dial-In User Service is used for authentication and authorization (1645) and accounting (1646)
1701 UDP
L2TP
Layer 2 Tunnel Protocol is used as an underlying VPN protocol but has no inherent security
1723 TCP/UDP
PPTP
Point-to-Point Tunneling Protocol is an underlying VPN protocol with built-in security
1812/1813 UDP
RADIUS
Remote Authentication Dial-In User Service is used for authentication and authorization (1812) and accounting (1813)
3225 TCP/UDP
FCIP
Fibre Channel IP is used to encapsulate Fibre Channel frames within TCP/IP packets
3260 TCP
iSCSI Target
iSCSI Target is as the listening port for iSCSI-targeted devices when linking data storage facilities over IP
3389 TCP/UDP
RDP
Remote Desktop Protocol is used to remotely view and control other Windows systems via a Graphical User Interface
3868 TCP
Diameter
A more advanced AAA protocol that is a replacement for RADIUS
6514 TCP
Syslog over TLS
It is used to conduct computer message logging, especially for routers and firewall logs, over a TLS-encrypted connection