Port 991

Modified by:

Port 991 is used for Secure Telnet Protocol over TLS/SSL, which provides encrypted communication between the telnet client and server. It is primarily used for remote administration and maintenance of network devices and servers.

Ports those registered with IANA are shown as official ports. The same port number may be unofficialy used by various services or applications. The official usage are listed separately below its usage may change from time to time.

Official

Port
Protocol (TCP/UDP)
Title
Description
Port Type
Port 991
tcp
nas
Netnews Administration System
WELL KNOWN PORT
Port 991
udp
nas
Netnews Administration System
WELL KNOWN PORT

UnOfficial

Unofficialy or sometimes with conflict, the same port may be used by different applications.

Port Protocol (TCP/UDP) Description
TCP UDP Ports
Other ports
Ports 28500 – 28600
Port 28500- Port 28600 Port 28600- Port 28700 Port 28700- Port 28800 Port 28800-
Port 1460
Ports those registered with IANA are shown as official ports. The same port number
Port 619
Ports those registered with IANA are shown as official ports. The same port number
Port 1340
Ports those registered with IANA are shown as official ports. The same port number
Port 48619
Ports those registered with IANA are shown as official ports. The same port number
Port 9107
Port 9107 is typically used for printing-related services. It is the standard port for
Port 1626
Ports those registered with IANA are shown as official ports. The same port number
Port 5419
Port 5419 is commonly used for running the software network-licensed version of MATLAB and
Port 1743
Ports those registered with IANA are shown as official ports. The same port number
Port 7262
Ports those registered with IANA are shown as official ports. The same port number
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