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Port 1999 Details
known port assignments and vulnerabilities
threat/application/port search:
| Port(s) |
Protocol |
Service |
Details |
Source |
| 1999 |
tcp |
tcp-id-port |
Cisco identification port.
Citrix Command Center Server uses ports 1099 and 2014 TCP to communicate with High Availability (HA) servers. May also use port 6011 TCP when there is a firewall between the primary and secondary servers.
Some trojans also use this port: Back Door, SubSeven, TransScout
Backdoor.Bifrose.C [Symantec-2005-051912-0450-99] (2005.05.19) - trojan that opens a backdoor on port 1999/tcp, and sends information to a remote server.
An attacker can identify a CISCO device by sending a SYN packet to port 1999, which is for the Cisco Discovery Protocol (CDP).
References: [CVE-1999-0453]
RunExeFile.exe in the installer for DEWESoft X3 SP1 (64-bit) devices does not require authentication for sessions on TCP port 1999, which allows remote attackers to execute arbitrary code or access internal commands, as demonstrated by a RUN command that launches a .EXE file located at an arbitrary external URL, or a "SETFIREWALL Off" command.
References: [CVE-2018-7756], [EDB-44275] |
SG
|
| 1999 |
tcp |
trojan |
Back Door, SubSeven , TransScout |
Trojans
|
| 1999 |
tcp |
BackDoor |
[trojan] BackDoor |
SANS
|
| 1999 |
tcp |
BackDoor |
[trojan] Back Door |
SANS
|
| 1999 |
tcp |
SubSeven |
[trojan] SubSeven |
SANS
|
| 1999 |
tcp |
TransScout |
[trojan] TransScout |
SANS
|
| 1999 |
tcp |
threat |
Bifrose |
Bekkoame
|
| 1999 |
tcp,udp |
tcp-id-port |
cisco identification port |
IANA
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8 records found
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jump to:
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Related ports: 2000 2014 6011
« back to SG Ports
External Resources
SANS Internet Storm Center: port 1999
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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