Portcyou - Avoid port conflicts, code with confidence
Avoid port conflicts, code with confidence
Professional port lookup database helping developers quickly find port usage information to avoid port conflicts during development
Common Ports Overview
Carefully curated port information covering web services, databases, development tools, and more
FTP data transfer port for File Transfer Protocol data connections
Common Software (2)
Very Secure FTP Daemon, popular FTP server on Linux
Free FTP server software
Default port for SSH (Secure Shell) protocol for secure remote access
Common Software (3)
Secure remote login and file transfer protocol
Popular SSH client on Windows platform
SSH secure shell protocol
SMTP (Simple Mail Transfer Protocol) mailtransferprotocolport
Common Software (4)
MailTransferProxy
MailTransferProxy
SimpleEmailTransportProtocol
Simple Mail Transfer Protocol port for mail transmission and routing services
Common Software (2)
FileTransferProtocol
FileTransferService
Time Protocol service port for network time synchronization and time queries
Common Software (2)
TimeProtocolService
RFC 868TimeProtocol
DNS (Domain Name System) port for domain name resolution
Common Software (4)
Most widely used DNS server software
High-performance DNS server
Kubernetes cluster DNS service port
MTP ，mailtransferprotocol
Common Software (2)
mailtransferprotocolserver
mailtransfersystem
DHCP server port for Dynamic Host Configuration Protocol
Common Software (3)
Internet Systems Consortium DHCP server
Windows built-in DHCP server
DHCPServer
DHCP client port for Dynamic Host Configuration Protocol
Common Software (3)
Linux/Unix DHCP client
Windows built-in DHCP client
DHCPClient
Standard port for HTTP protocol, used by web servers to receive HTTP requests
Common Software (5)
Default port for Apache HTTP server
Default port for Nginx web server
Microsoft's web server integrated in Windows Server
Kerberos authentication protocol port
Common Software (2)
MIT-developed Kerberos implementation
MicrosoftDirectoryServiceKerberosAuthentication
Post Office Protocol version 2 (POP2)
Common Software (2)
Post Office Protocol version 2 server
Legacy mail service
POP3 (Post Office Protocol 3) for receiving email
Common Software (4)
IMAPPOP3MailServer
MailServer
ProtocolVersion3
Ident - Legacy server identification system, still used by IRC servers for user authentication
Common Software (2)
Identity daemon process
IRC server authentication
Simple File Transfer Protocol (SFTP) port
Common Software (2)
Simple File Transfer Protocol
filetransferservice
SQL service port for database query and management services
Common Software (2)
OracleSQLNetworkProtocol
databaseservice
NTP (Network Time Protocol) port for time synchronization
Common Software (3)
Microsoft RPCEndpoint Mapper，forWindows RPCService
Common Software (3)
WindowsRemoteService
Distributed
MicrosoftRemoteService
IMAP (Internet Message Access Protocol) port
Common Software (4)
IMAPPOP3MailServer
IMAPServer
MessageProtocol
BFTP, BackgroundFileTransferProgram
Common Software (2)
FileTransfer
TransferSystem
Simple GatewayMonitoringProtocol（[Simple Gateway Monitoring Protocol]( )，SGMP）
Common Software (2)
MonitoringProtocol
NetworkMonitoringTool
SQLservice
Common Software (2)
SQLservice
databasemanagementsystem
Distributed Mail System Protocol port for mail routing and transmission
Common Software (2)
DistributedMailServiceProtocolServer
MailSystem
SNMP (Simple Network Management Protocol) port
Common Software (3)
Open-sourceSNMP
WindowsSNMPService
Simple Network Management Protocol for network device monitoring
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