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Port 79 Details
known port assignments and vulnerabilities
threat/application/port search:
| Port(s) |
Protocol |
Service |
Details |
Source |
| 79 |
tcp,udp |
Finger |
Finger
Finger Security Concerns: Provides key host info to attacker - Fingered host can be DOSd if hit with a recursive finger script till its memory and swap space fill. - Fingering clients can be DOSd if they finger a maliciously configured host (returns data overload - causing client to beep continually - etc.). - If fingering clients allow programmable keys - a maliciously configured host can return a finger response that maps a key to rm -rf /-. Disable on all host unless finger service is stubbed to only provide scripted data response (eg: system admin contact info - etc.).
Trojans that also use this port: ADM worm, Back Orifice 2000 (BO2K), CDK trojan (ports 79, 15858), Firehotcker (ports 79, 5321)
The legacy finger service (TCP port 79) is enabled by default on various older Lexmark devices.
References: [CVE-2019-10059] |
SG
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| 79 |
tcp |
|
Finger protocol (official) |
Wikipedia
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| 79 |
tcp |
trojan |
ADM worm, Firehotcker |
Trojans
|
| 79 |
tcp |
BO2KDataPort |
[trojan] Back Orifice 2000 (BO2K) Data Port |
Neophasis
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| 79 |
tcp |
CDK |
[trojan] CDK |
Neophasis
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| 79 |
tcp |
Firehotcker |
[trojan] Firehotcker |
Neophasis
|
| 79 |
tcp |
threat |
RAT:Firehotcker Requires VB CDK |
Bekkoame
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| 79 |
tcp,udp |
finger |
Finger. Unauthorized use by some mail users (see [RFC4146] for details) |
IANA
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8 records found
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jump to:
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Related ports: 70 5321 15858
« back to SG Ports
External Resources
SANS ISC: port 79
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.
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