What is TCP 513 used for?
This service runs on port 513 and it allows users to login to the host remotely. This service was mostly used in the old days for remote administration but now because of security issues this service has been replaced by the slogin and the ssh.
What does TCP port 6667 do?
Side note: UDP port 6667 uses the Datagram Protocol, a communications protocol for the Internet network layer, transport layer, and session layer. This protocol when used over PORT 6667 makes possible the transmission of a datagram message from one computer to an application running in another computer.
What is TCP 500 used for?
|Purpose:||Internet Security Association and Key Management Protocol (ISAKMP)|
|Description:||Port 500 is used by the Internet key exchange (IKE) that occurs during the establishment of secure VPN tunnels. Users of VPN servers and clients may encounter this port.|
What is the best TCP port?
The highest TCP port number is 65,535. The TCP protocol provides 16 bits for the port number, and this is interpreted as an unsigned integer; all values are valid, apart from 0, and so the largest port number is (2^16 – 1) or 65,535.
What port is 515?
Line Printer Daemon protocol
|Purpose||Submitting print jobs to a remote printers|
|Based on||Berkeley printing system|
What ports should not be used?
Ports 1024-49151- Registered Port -These can be registered for services with the IANA and should be treated as semi-reserved. User written programs should not use these ports. Ports 49152-65535– These are used by client programs and you are free to use these in client programs.