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Port 4443 Details


known port assignments and vulnerabilities
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Port(s) Protocol Service Details Source
4443 tcp,udp applications Port sometimes used as an alternative to the standard HTTPS/SSL web traffic port 443 TCP.

Microsoft Lync server uses these ports:
444, 445, 448, 881, 5041, 5060 - 5087, 8404 TCP
80, 135, 443, 4443, 8060, 8061, 8080 TCP - standard ports and HTTP(s) traffic
1434 UDP - SQL
49152-57500 TCP/UDP - media ports

Neato Robotics vacuum cleaners use ports 4443, 80, and 443/tcp.
MyKobold robot vacuum cleaners use port 4443/tcp

AOL Instant Messenger (AIM) allows remote attackers to steal files that are being transferred to other clients by connecting to port 4443 (Direct Connection) or port 5190 (file transfer) before the intended user.
References: [CVE-2002-0592], [BID-4574]

A vulnerability has been identified in SIPROTEC 5 relays with CPU variants CP050 (All versions < V8.80), SIPROTEC 5 relays with CPU variants CP100 (All versions < V8.80), SIPROTEC 5 relays with CPU variants CP300 (All versions < V8.80). Specially crafted packets sent to port 4443/tcp could cause a Denial-of-Service condition.
References: [CVE-2021-33720], [CVE-2021-33719]

Infoblox IPAM WinConnect default Web GUI port. Also uses port 9633.
SG
4443 tcp pharos pharos Nmap
4443 tcp,udp threat AOL Instant Messenger(thanx A. Cow) Bekkoame
4443 tcp,udp pharos Pharos. Known Unauthorized Use on port 4443 IANA
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Related ports: 443  5190  8080  9633  

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External Resources
SANS ISC: port 4443

Notes:
Port numbers in computer networking represent communication endpoints. Ports are unsigned 16-bit integers (0-65535) that identify a specific process, or network service. IANA is responsible for internet protocol resources, including the registration of commonly used port numbers for well-known internet services.
Well Known Ports: 0 through 1023.
Registered Ports: 1024 through 49151.
Dynamic/Private : 49152 through 65535.

TCP ports use the Transmission Control Protocol, the most commonly used protocol on the Internet and any TCP/IP network. 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. Like TCP, UDP is used in combination with IP (the Internet Protocol) and facilitates 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 and realtime gaming, 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 4443.
  User Reviews/Comments:
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by anonymous - 2017-10-03 06:55
Used for Neato robotic vacuum cleaners to communicate.
by anonymous - 2024-03-14 12:53
opsenssl default port choice. openssl.org > docs > man1 > openssl-s_client
by volvomen - 2024-09-11 11:25
Wird für die Kommunikation der Roboterstaubsauger MyKobold verwendet
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