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Port 9 Details
known port assignments
threat/application/port search:
| Port(s) |
Protocol |
Service |
Details |
Source |
| 9 |
tcp,udp |
Discard |
Discard server - this protocol is only installed on machines for test purposes. The service listening at this port (both TCP and UDP) simply discards any input.
See also: [RFC863], CVE-1999-0060
Intrusions: Ascend kill
This exploit kills Ascend routers by sending them a specially formatted malformed TCP packet. On certain versions of the Ascend operating system, the router can be forced to cause an internal error, resulting in the router rebooting. |
SG |
| 9 |
tcp,udp |
|
Discard (official) |
Wikipedia |
| 9 |
tcp,udp |
discard |
Discard [RFC4960] [RFC4340] |
IANA |
| 9 |
tcp,udp |
discard |
Discard |
SANS |
| 9 |
tcp,udp |
discard |
sink null |
Nmap |
5 records found
« back to SG Ports
External Resources
SANS Internet Storm Center: port 9
tantalo.net port assignments: port 9
GRC: port 9
Notes:
Well Known Ports: 0 through 1023.
Registered Ports: 1024 through 49151.
Dynamic/Private : 49152 through 65535.
TCP ports use the Transmission Control Protocol. TCP is one of the main protocols in
TCP/IP networks. Whereas the IP protocol deals only with packets, 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 is the key difference between TCP and UDP.
UDP ports use the Datagram Protocol, a communications protocol for the Internet network,
transport, and session layers. Like TCP (Transmission Control Protocol),
UDP is used with IP (the Internet Protocol) and makes possible 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.
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