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Port 4444 Details

known port assignments and vulnerabilities
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Port(s) Protocol Service Details Source
4444 tcp trojans 4444 (TCP/UDP) is the default listener port for Metasploit.
I2P HTTP/S proxy also uses this port.

W32.Blaster.Worm [Symantec-2003-081113-0229-99] is a widely spread worm that exploits the DCOM RPC vulnerability described in MS Security Bulletin [MS03-026]. The worm allows remote access to an infected computer via ports 4444/tcp and 69/UDP, and spreads through port 135/tcp. To avoid being infected consider closing those ports.

W32.Reidana.A [Symantec-2005-032515-4042-99] (2005.03.24) - worm that spreads using the MS DCOM RPC vulnerability (MS Security Bulletin [MS03-026]) on port 139. The worm attempts to download and execute a remote file via FTP. Opens TCP port 4444.

Some other trojans using this port: AlexTrojan, CrackDown, Oracle, Prosiak, SwiftRemote, W32.Hllw.Donk.M, W32.mockbot.a.worm [Symantec-2004-022608-5242-99]

HP Business Service Management (BSM) 9.12 does not properly restrict the uploading of .war files, which allows remote attackers to execute arbitrary JSP code within the JBOSS Application Server component via a crafted request to TCP port 1098, 1099, or 4444.
References: [CVE-2012-2561]

MinaliC Webserver is vulnerable to a stack-based buffer overflow, caused by improper bounds checking when processing HTTP Post method. By sending a specially-crafted request containing an overly long string to TCP port 4444, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.
References: [XFDB-83714]

KNet Web Server is vulnerable to a buffer overflow. By sending a specially-crafted request to TCP port 4444, containing an overly long string argument, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the server to crash.
References: [XFDB-83114], [BID-58781], [EDB-24897]

Open On-Chip Debugger (OpenOCD) 0.10.0 does not block attempts to use HTTP POST for sending data to port 4444, which allows remote attackers to conduct cross-protocol scripting attacks, and consequently execute arbitrary commands, via a crafted web site.
References: [CVE-2018-5704]

KRB524 (IANA official)
4444 udp applications Rockwell Automation RSLinx is vulnerable to a denial of service, caused by improper validation of input by LogReceiver.exe and Logger.dll. By sending a specially-crafted request to UDP port 4444, a remote attacker could exploit this vulnerability to cause the service to stop handling incoming requests.
References: [CVE-2012-4695] [XFDB-83275] [BID-58917]

Backdoor.Win32.Mnets / Remote Stack Buffer Overflow - the backdoor listens for commands on UDP ports 2222 and 4444. Sending a mere 323 bytes we can overwrite the instruction pointer (EIP), potentially giving us program execution flow over the remote Malware.
References: [MVID-2021-0031]
4444 tcp trojan CrackDown, Oracle, Prosiak, Swift Remote Trojans
4444 tcp CrackDown [trojan] CrackDown SANS
4444 tcp krb524 KRB524 SANS
4444 tcp,udp nv-video NV Video default SANS
4444 tcp Prosiak [trojan] Prosiak SANS
4444 tcp SwiftRemote [trojan] Swift Remote SANS
4444 udp krb524 SANS
4444 tcp krb524 Kerberos 5 to 4 ticket xlator Nmap
4444 udp krb524 krb524 Nmap
4444 tcp,udp threat Napster Bekkoame
4444 tcp,udp threat Prosiak Bekkoame
4444 tcp,udp threat Swift Remote Bekkoame
4444 tcp,udp threat W32.Blaster.Worm Bekkoame
4444 tcp,udp threat W32.HLLW.Donk Bekkoame
4444 tcp,udp threat W32.Mockbot Bekkoame
4444 tcp,udp threat W32.Reidana Bekkoame
4444 tcp krb524 KRB524. "krb524 assigned the port IANA
4444 udp krb524 KRB524. "krb524 assigned the port IANA
4444 tcp nv-video NV Video default. "krb524 assigned the port IANA
4444 udp nv-video NV Video default. "krb524 assigned the port IANA
22 records found
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Related ports: 69  135  139  1098  1099  2222  

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External Resources
SANS Internet Storm Center: port 4444

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.

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