How to scan opened ports
In computer networking, a port is a communication endpoint. At the software level, within an operating system, a port is a logical construct that identifies a specific process or a type of network service. A port is identified for each transport protocol and address combination by a 16-bit unsigned number, known as the port number. The most common transport protocols that use port numbers are the Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP).
A port number is always associated with an IP address of a host and the type of transport protocol used for communication. It completes the destination or origination network address of a message. Specific port numbers are reserved to identify specific services so that an arriving packet can be easily forwarded to a running application. For this purpose, the lowest-numbered 1024 port numbers identify the historically most commonly used services and are called the well-known port numbers. Higher-numbered ports are available for general use by applications a nd are known as ephemeral ports.
Ports provide a multiplexing service for multiple services or multiple communication sessions at one network address. In the client–server model of application architecture, multiple simultaneous communication sessions may be initiated for the same service.
Port scanning is a method of determining which ports on the network are open and could be receiving or sending data. It is also a process of sending packets to specific ports on a host and analyzing the responses to identify vulnerabilities.
To begin scanning, it is necessary to identify the list of active hosts and map them to IP addresses. This procedure is called host discovery.
Roxy-WI helps to define open and closed ports on your network. This information can be useful for detecting possible vulnerabilities and preventing network attacks.
For checking your servers ports go to the Servers -> Servers tab. Select a server and press the "Scan" button.
To begin scanning, it is necessary to identify the list of active hosts and map them to IP addresses. This procedure is called host discovery.
You will see the list of your ports including the information upon their state and the names of services possibly listening on these ports:
