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Protocols & Ports

Popular Application Layer Protocols and their TCP and/or UDP Ports

TermDefinition
FTP File Transfer Protocol
FTP File Transfer Protocol - Transfers files w/ a remote host (typically requires authentication of user credentials)
FTP transfers files with a remote host (typically requires authentication of user credentials)
File Transfer Protocol transfers files with a remote host (typically requires authentication of user credentials)
SSH Secure Shell
SSH Secure Shell: Securely connects to a remote host (typically via a terminal emulator)
SSH Securely connects to a remote host (typically via a terminal emulator)
Secure shell Securely connects to a remote host (typically via a terminal emulator)
FTP TCP Port 20
FTP TCP Port 21
FTP TCP Ports 20 & 21
File Transfer Protocol TCP Port 20
File Transfer Protocol TCP Port 21
File Transfer Protocol TCP Ports 20 & 21
SSH TCP Port 22
Secure Shell TCP Port 22
SFTP Secure File Transfer Protocol: Provides FTP file transfer service over an SSH connection
SFTP Provides FTP file transfer service over an SSH connection
SFTP TCP Port 22
Secure File Transfer Protocol Provides FTP file transfer service over an SSH connection
Secure File Transfer Protocol TCP Port 22
SCP Secure Copy
SFTP Secure File Transfer Protocol
SCP Secure Copy: Provides a secure file-transfer service over an SSH connection & offers a file's original date & time information, which is not available w/ FTP
SCP Provides a secure file-transfer service over an SSH connection & offers a file's original date & time information, which is not available w/ FTP
Secure Copy Provides a secure file-transfer service over an SSH connection & offers a file's original date & time information, which is not available w/ FTP
SCP TCP Port 22
Secure Copy TCP Port 22
Telnet Used to connect to a remote host (typically via a terminal emulator)
Telnet TCP Port 23
SSH, SFTP, and SCP use this TCP Port 22
rsh Remote Shell
rsh Remote Shell: Allows commands to be executed on a computer from a remote user
rsh Allows commands to be executed on a computer from a remote user
rsh TCP Port 514
Remote Shell Allows commands to be executed on a computer from a remote user
Remote Shell TCP Port 514
DNS Domain Name System
DNS Domain Name System: Resolves domain names to corresponding IP addresses
DNS Resolves domain names to corresponding IP addresses
Domain Name System Resolves domain names to corresponding IP addresses
DNS TCP/UDP Port 53
Domain Name System TCP/UDP Port 53
Net BIOS Network Basic Input/Output System: Provides network communication services for LANs that use Net BIOS
Net BIOS Provides network communication services for LANs that use Net BIOS
Net BIOS TCP Port 139
Net BIOS UDP Ports 137 & 138
Net Bios TCP Port 139 & UDP Ports 137 & 138
Network Basic Input/Output System Provides network communication services for LANs that use Net BIOS
Network Basic Input/Output System TCP Port 139
Network Basic Input/Output System UDP Ports 137 & 138
Network Basic Input/Output System TCP Port 139 & UDP Ports 137 & 138
SMB Server Message Block: used to share files, printers, and other network resources
SMB used to share files, printers, and other network resources
SMB TCP Port 445
Server Message Block used to share files, printers, and other network resources
Server Message Block TCP Port 445
Trivial File Transfer Protocol UDP Port 69
Trivial File Transfer Protocol Transfers files w/ a remote host (doesn't require authentication of user credentials)
TFTP Transfers files w/ a remote host (doesn't require authentication of user credentials)
TFTP UDP Port 69
TFTP Trivial File Transfer Protocol
TFTP Trivial File Transfer Protocol - Transfers files w/ a remote host (doesn't require authentication of user credentials)
DHCP Dynamic Host Configuration Protocol
DHCP UDP Port 67 & 68
DHCP Dynamically assigns IP address information (i.e. IP address, Subnet mask, DNS server IP, and default gateway IP address) to a network device
Dynamic Host Configuration Protocol Dynamically assigns IP address information (i.e. IP address, Subnet mask, DNS server IP, and default gateway IP address) to a network device
Dynamic Host Configuration Protocol UDP Port 67 & 68
HTTP Hypertext Transfer Protocol
HTTP retrieves content from a web server
HTTP TCP Port 80
Hypertext Transfer Protocol TCP Port 80
Hypertext Transfer Protocol retrieves content from a web server
HTTPS Hypertext Transfer Protocol Secure
HTTPS TCP Port 443
HTTPS securely retrieves content from a web server
Hypertext Transfer Protocol Secure TCP Port 443
Hypertext Transfer Protocol Secure securely retrieves content from a web server
SMTP Simple Mail Transfer Protocol
SMTP TCP Port 25
SMTP Used for sending e-mail
SMTP Simple Mail Transfer Protocol - used for sending e-mail
POP3 Post Office Protocol Version 3: Retrieves e-mail from an e-mail server
Simple Mail Transfer Protocol TCP Port 25
Simple Mail Transfer Protocol Used for sending e-mail
POP3 TCP Port 110
POP3 Post Office Protocol Version 3
POP3 Retrieves e-mail from an e-mail server
Post Office Protocol Version 3 Retrieves e-mail from an e-mail server
Post Office Protocol Version 3 TCP Port 110
IMAP Internet Message Access Protocol
IMAP TCP Port 143
IMAP Retrieves e-mail from an e-mail server
IMAP Internet Message Access Protocol: Retrieves e-mail from an e-mail server
Internet Message Access Protocol TCP Port 143
Internet Message Access Protocol Retrieves e-mail from an e-mail server
IMAP4 Internet Message Access Protocol Version 4
IMAP4 TCP Port 143
IMAP & IMAP4 TCP Port 143
IMAP4 Retrieves e-mail from an e-mail server
Internet Message Access Protocol Version 4 Retrieves e-mail from an e-mail server
Internet Message Access Protocol Version 4 TCP Port 143
NNTP Network News Transport Protocol
NNTP Supports the posting & reading of articles on Usenet news servers
NNTP TCP Port 119
Network News Transport Protocol TCP Port 119
Network News Transport Protocol Supports the posting & reading of articles on Usenet news servers
NTP Network Time Protocol
NTP TCP Port 123
NTP Used by a network device to synchronize its clock with a time server (NTP server)
Network Time Protocol Used by a network device to synchronize its clock with a time server (NTP server)
Network Time Protocol TCP Port 123
SNTP Supports time synchronization among network devices, like NTP, but it uses a less complex algorithm in its calculation and is slightly less accurate than NTP
SNTP Simple Network Time Protocol
SNTP TCP Port 123
NTP & SNTP TCP Port 123
Simple Network Time Protocol Supports time synchronization among network devices, like NTP, but it uses a less complex algorithm in its calculation and is slightly less accurate than NTP
Simple Network Time Protocol TCP Port 123
LDAP TCP Port 389
LDAP Lightweight Directory Access Protocol
LDAP Provides directory services (i.e. a user directory - including username, password, e-mail, & phone number information) to network clients
Lightweight Directory Access Protocol Provides directory services (i.e. a user directory - including username, password, e-mail, & phone number information) to network clients
Lightweight Directory Access Protocol TCP Port 389
RTSP Real Time Streaming Protocol
RTSP TCP/UDP Port 554
RTSP Communicates with a media server (i.e. video server) & controls the play back of the server's media files
Real Time Streaming Protocol Communicates with a media server (i.e. video server) & controls the play back of the server's media files
Real Time Streaming Protocol TCP/UDP Port 554
RDP Remote Desktop Protocol
RDP TCP Port 3389
RDP A Microsoft protocol that allows a user to view & control the desktop of a remote computer
Remote Desktop Protocol TCP Port 3389
Remote Desktop Protocol A Microsoft protocol that allows a user to view & control the desktop of a remote computer
SNMP Simple Network Management Protocol
SNMP UDP Port 161
SNMP Used to monitor & manage network devices
Simple Network Management Protocol Used to monitor & manage network devices
Simple Network Management Protocol UDP Port 161
SNMP Trap Simple Network Management Protocol Trap
SNMP Trap TCP/UDP Port 162
SNMP Trap Used to monitor and manage network devices
Simple Network Management Protocol Trap TCP/UDP Port 162
Simple Network Management Protocol Trap Used to monitor and manage network devices
SIP Session Initiation Protocol
SIP TCP Port 5061
SIP UDP Port 5060
SIP TCP Port 5061 & UDP Port 5060
SIP Used to create and end sessions for one or more media connections, including VOIP calls
Session Initiation Protocol TCP Port 5061
Session Initiation Protocol UDP Port 5060
Session Initiation Protocol TCP Port 5061 & UDP Port 5060
Session Initiation Protocol Used to create and end sessions for one or more media connections, including VOIP calls
MGCP Media Gateway Control Protocol
MGCP Used as a call control & communication protocol for VOIP networks
MGCP UDP Ports 2427 & 2727
Media Gateway Control Protocol Used as a call control & communication protocol for VOIP networks
Media Gateway Control Protocol UDP Ports 2427 & 2727
H.323 A signaling protocol that provides multimedia communications over a network
H.323 TCP Port 1720
RTP Real-Time Transport Protocol
RTP TCP/UDP 5004 & 5005
RTP Used for delivering media-based data over networks, such as VOIP
Real-Time Transport Protocol TCP/UDP 5004 & 5005
Real-Time Transport Protocol Used for delivering media-based data over networks, such as VOIP
Kerberos UDP 88
Kerberos Authentication over an unsecured network
LDAPS TCP/UDP 636
Created by: abruton
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