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Network+ Port Numbers

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msmith's version from 2016-09-12 01:42

Section

Question Answer
FTP File Transfer Protocol: Transfers files with a remote host (typically requires authentication of user credentials)20 AND 21
SSH - Secure Shell: Securely connect to a remote host (typically via a terminal emulator)22
SFTP Secure FTP: Provides FTP file-transfer service over a SSH connection22
SCP Secure Copy: Provides a secure file-transfer service over a SSH connection and offers a file's original date and time information, which is not available with FTP22
Telnet: Used to connect to a remote host (typically via a terminal emulator)23
rsh Remote Shell: Allows commands to be executed on a computer from a remote user514
DNS Domain Name System: Resolves domain names to corresponding IP addresses53
NetBIOS Network Basic Input/Output System: Provides network communication services for LANs that use NetBIOS (TCP)139
NetBIOS Network Basic Input/Output System: Provides network communication services for LANs that use NetBIOS(UDP)137, 138
SMB Server Message Block: used to share files, printers, and other network resources445
TFTP Trivial File Transfer Protocol: Transfers files with a remote host (does not require authentication of user credentials)69
DHCP Dynamic Host Configuration Protocol: Dynamically assigns IP address information (for example, IP address, subnet mask, DNS server's IP address, and default gateway's IP address) to a network device67, 68
HTTPS Hypertext Transfer Protocol Secure: Used to securely retrieve content from a web server443
SMTP Simple Mail Transfer Protocol: Used for sending e-mail25
POP3 Post Office Protocol Version 3: Retrieves e-mail from an e-mail server110
IMAP Internet Message Access Protocol: Retrieves e-mail from an e-mail server143
NNTP Network News Transport Protocol: Supports the posting and reading of articles on Usenet news servers119
NTP Network Time Protocol: Used by a network device to synchronize its clock with a time server (NTP server)123
SNTP Simple Network Time Protocol: Supports time synchronization among network devices, similar to Network Time Protocol (NTP), although SNTP uses a less complex algorithm in its calculation and is slightly less accurate than NTP123
IMAP4 Internet Message Access Protocol Version 4: Retrieves e-mail from an e-mail server143
LDAP Lightweight Directory Access Protocol: Provides directory services (for example, a user directory—including username, password, e-mail, and phone number information) to network clients389
RTSP Real Time Streaming Protocol: Communicates with a media server (for example, a video server) and controls the playback of the server's media files554
RDP Remote Desktop Protocol: A Microsoft protocol that allows a user to view and control the desktop of a remote computer3389
SNMP Simple Network Management Protocol: Used to monitor and manage network devices161
SNMP Trap Simple Network Management Protocol Trap: A notification sent from an SNMP agent to an SNMP manager162
SIP Session Initiation Protocol: Used to create and end sessions for one or more media connections, including Voice over IP calls (TCP)5061
SIP Session Initiation Protocol: Used to create and end sessions for one or more media connections, including Voice over IP calls (UDP)5060
MGCP Media Gateway Control Protocol: Used as a call control and communication protocol for Voice over IP networks2427, 2727
H.323 H.323 is a signaling protocol that provides multimedia communications over a network1720
RTP Real-time Transport Protocol: Used for delivering media-based data over networks, such as Voice over IP5004, 5005
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