Port Lookup
Quick reference for common network ports across web, database, messaging, mail, remote access, and more. Search by port or service name, filter by category, and copy port numbers in one click.
76 ports
20tcpFTP-Data
FTP data channel (active mode).
21tcpFTP
FTP control connection default port.
22tcpSSH / SFTP
SSH remote login and SFTP default port.
23tcpTelnet
Plaintext Telnet login; insecure, use SSH instead.
25tcpSMTP
SMTP mail relay between servers (MTA to MTA); often abused for spam.
53bothDNS
Domain name resolution (UDP for queries, TCP for zone transfer).
67udpDHCP Server
DHCP server address assignment (bootps).
68udpDHCP Client
DHCP client requests (bootpc).
69udpTFTP
Trivial FTP over UDP; used for firmware and PXE boot.
80tcpHTTP
Default port for the web, plaintext HTTP traffic.
88tcpKerberos
Kerberos authentication default port.
110tcpPOP3
POP3 mail retrieval (plaintext).
123udpNTP
Network time synchronization protocol.
139tcpNetBIOS
NetBIOS session service (legacy Windows sharing).
143tcpIMAP
IMAP mail retrieval (plaintext).
161udpSNMP
SNMP network device monitoring queries.
162udpSNMP Trap
SNMP trap (device-initiated alerts).
179tcpBGP
Border Gateway Protocol for inter-AS routing.
389tcpLDAP
LDAP directory service (Active Directory queries).
443tcpHTTPS
Encrypted web traffic over TLS/SSL.
445tcpSMB
Windows file sharing and printers; a top ransomware target.
464tcpKerberos 改密
Kerberos password change port.
465tcpSMTPS
SMTP over implicit SSL submission port.
587tcpSMTP 提交
Mail client submission with STARTTLS; the recommended sending port.
636tcpLDAPS
LDAP over SSL.
873tcprsync
rsync daemon default port.
993tcpIMAPS
IMAP over SSL.
995tcpPOP3S
POP3 over SSL.
1080tcpSOCKS 代理
SOCKS4/5 proxy server default port.
1433tcpSQL Server
Microsoft SQL Server default port.
1521tcpOracle DB
Oracle database listener default port.
1719udpH.323 RAS
H.323 video conferencing registration.
1720tcpH.323 Q.931
H.323 call setup port.
1812udpRADIUS 认证
RADIUS authentication/authorization (enterprise Wi-Fi).
1813udpRADIUS 计费
RADIUS accounting port.
1883tcpMQTT
MQTT IoT messaging default port.
1900udpUPnP / SSDP
UPnP discovery (SSDP); also a DDoS reflection source.
1935tcpRTMP
RTMP live streaming default port.
2049tcpNFS
NFS network file system default port.
2181tcpZooKeeper
ZooKeeper default client port.
2375tcpDocker API
Docker Remote API without TLS; a critical risk if exposed.
2376tcpDocker API TLS
Docker Remote API over TLS.
3000tcpNode.js Dev
Node.js (Express/Nuxt/React) dev default; also Grafana default.
3128tcpSquid 代理
Squid HTTP proxy default port.
3306tcpMySQL
MySQL / MariaDB default port.
3389tcpRDP
Windows Remote Desktop default port.
5000tcpFlask / UPnP
Flask dev-server default; also used by Windows UPnP discovery.
5060bothSIP
VoIP SIP signaling default port.
5061tcpSIP over TLS
SIP signaling over TLS.
5353udpmDNS
Multicast DNS local service discovery (Bonjour/Avahi).
5432tcpPostgreSQL
PostgreSQL default port.
5555tcpADB
Android Debug Bridge network connection.
5672tcpAMQP
RabbitMQ AMQP protocol default port.
5900tcpVNC
VNC remote desktop, starting at 5900 + display number.
5984tcpCouchDB
Apache CouchDB default port.
6379tcpRedis
Redis default port; a top target when exposed to the internet.
8000tcpHTTP Dev
Common dev-server port for Django/Flask and others.
8020tcpHDFS NameNode
Hadoop HDFS NameNode RPC port.
8080tcpHTTP Alt / 代理
Common HTTP alternative: Tomcat, Nginx reverse proxy, dev servers.
8088tcpYARN Web
Hadoop YARN resource manager web UI.
8123tcpClickHouse HTTP
ClickHouse HTTP interface default port.
8161tcpActiveMQ Web
ActiveMQ web console default port.
8443tcpHTTPS Alt
HTTPS alternative port, Tomcat SSL default.
8529tcpArangoDB
ArangoDB default port.
8883tcpMQTT over TLS
MQTT over TLS/SSL.
9000tcpPHP-FPM
PHP-FPM FastCGI default listen port.
9042tcpCassandra
Cassandra CQL native transport port.
9092tcpKafka
Apache Kafka broker default port.
9200tcpElasticsearch
Elasticsearch REST API default port (HTTP).
9418tcpGit 协议
The unencrypted git:// protocol port.
10000tcpWebmin
Webmin server admin panel default port.
11211tcpMemcached
Memcached default port; infamous for DDoS amplification.
15672tcpRabbitMQ 管理台
RabbitMQ management UI default port.
16010tcpHBase Master
HBase Master web UI.
27017tcpMongoDB
MongoDB default port.
61616tcpActiveMQ
ActiveMQ OpenWire default port.