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Port 4242 Details
known port assignments and vulnerabilities
threat/application/port search:
| Port(s) |
Protocol |
Service |
Details |
Source |
| 4242 |
tcp |
vrml |
Applications using this port:
CrashPlan Cloud Backup
Microsoft Application Center Remote Management services
Orthanc (open source DICOM server for medical imaging)
Rag Doll Kung Fu (TCP/UDP)
Reverse Battle Tetris
Quassel distributed IRC client
Virtual Hacking Machine (VHM) trojan
Nemog backdoor (discovered 2004.08.16) - a backdoor trojan horse that allows an infected computer to be used as an email relay and HTTP proxy, dropped by W32.Mydoom.Q@mm. It can use one of the following ports: 3306,4242,4646,4661,6565,8080
Stack-based buffer overflow in the parsePresentationContext function in storescp in DICOM dcmtk-3.6.0 and earlier allows remote attackers to cause a denial of service (segmentation fault) via a long string sent to TCP port 4242.
References: [CVE-2015-8979], [BID-94951], [XFDB-130495]
IANA registered for: VRML Multi User Systems |
SG
|
| 4242 |
tcp |
trojan |
[trojan] Virtual Hacking Machine - VHM |
Trojans
|
| 4242 |
tcp |
VirtualHackingMachine |
[trojan] Virtual Hacking Machine - VHM |
SANS
|
| 4242-4299 |
tcp,udp |
vrml-multi-use |
Multi User Systems |
SANS
|
| 4242 |
vrml |
vrml-multi-use |
Multi User Systems |
Neophasis
|
| 4242 |
tcp |
threat |
Nemog |
Bekkoame
|
| 4242 |
tcp,udp |
|
This port number is widely used on the net for MUDs (Multi-User-Dungeons), a type of chat system. It is also frequently used as an example port in code demonstrations or as an alternate HTTP port. The reason this is so popular is becuase it repeats the number 42, a popular number among computer geeks. In Douglas Adams classic book "Hitch Hikers Guide to the Galaxy", the number "42" is the answer to life, the universe, and everything. o This port is used (TCP) for a remote admin Trojan called "Virtual Hacking Machine". o This port is used for configuration for the Payline e-commerce package. o Connectix VideoPhone uses this port for something. o IBM's version of UNIX, AIX, has a C++ source browser (part of IBM's CSet package) that listens at this port and is susceptable to a buffer overflow. |
Bekkoame
|
| 4200-4299 |
tcp,udp |
vrml-multi-use |
VRML Multi User Systems |
IANA
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8 records found
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jump to:
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Related ports: 3306 4201 4243 4646 4661 6565 8042 8080
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External Resources
SANS ISC: port 4242
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.
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