Port 9443 Details

known port assignments and vulnerabilities
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Port(s) Protocol Service Details Source
9443 tcp tungsten-https Sometimes used as an alternate SSL port.

Dogtag Certificate System authority uses port 9080 (ca) and port 9443 (secure ca) by default.
Dograg Certificate PKI Subsystems may also use:
DRM - ports 10080 (drm) and 10443 (drm secure)
OCSP - ports 11080 (ocsp) and 11443 (ocsp secure)
RA - ports 12888 (ra) and 12889 (ra secure)
TKS - ports 13080 (tks) and 13443 (tks secure)
TPS - ports (tps) 7888 and 7889 (tps secure)

German Health Getwork (aka Gesundheitskarte) "Konnektor" uses ports 8443 and 9443.

VMware HTTPS uses port 9443 (TCP) for accessing and administrating a vCenter Server via the Web Management Interface

Cisco Prime Central for Hosted Collaboration Solution (HCS) Assurance 8.6 and 9.0 allows remote attackers to cause a denial of service (CPU consumption and monitoring outage) via malformed TLS messages to TCP port (1) 9043 or (2) 9443, aka Bug ID CSCuc07155.
References: [CVE-2013-1135]

WSO2 Tungsten HTTPS (IANA official)
9443 tcp WSO2 Web Services Application Server HTTPS transport (officially WSO2 Tungsten HTTPS (official) Wikipedia
9443 tcp WebSphere Application Server HTTP Transport (port 2) default (unofficial) Wikipedia
9443 tcp,udp tungsten-https WSO2 Tungsten HTTPS, registered 2006-06 IANA
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Related ports: 443  5480  9080  9043  10443  

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External Resources
SANS Internet Storm Center: port 9443

Well Known Ports: 0 through 1023.
Registered Ports: 1024 through 49151.
Dynamic/Private : 49152 through 65535.

TCP ports use the Transmission Control Protocol. TCP is the most commonly used protocol on the Internet and any TCP/IP network. Whereas the IP protocol deals only with packets, TCP enables two hosts to establish a connection and exchange streams of data. TCP guarantees delivery of data and that packets will be delivered in the same order in which they were sent. Guaranteed communication/delivery is the key difference between TCP and UDP.

UDP ports use the Datagram Protocol, a communications protocol for the Internet network, transport, and session layers. Like TCP (Transmission Control Protocol), UDP is used with IP (the Internet Protocol) and makes possible the transmission of datagrams from one computer to applications on another computer, but unlike TCP, UDP is connectionless and does not guarantee reliable communication; it's up to the application that received the message to process any errors and verify correct delivery. UDP is often used with time-sensitive applications, such as audio/video streaming, where dropping some packets is preferable to waiting for delayed data.

When troubleshooting unknown open ports, it is useful to find exactly what services/processes are listening to them. This can be accomplished in both Windows command prompt and Linux variants using the "netstat -aon" command. We also recommend runnig multiple anti-virus/anti-malware scans to rule out the possibility of active malicious software. For more detailed and personalized help please use our forums.

Please use the "Add Comment" button below to provide additional information or comments about port 9443.
  User Reviews/Comments:
by BestBackwards - 2015-04-02 05:32
Just to note, Veeam Backup uses the same port for accessing the Enterprise Manager web interface.
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