What is an online port scanner?Īlso referred to as an open port scanner or IP port scanner, a port scanner is a free tool that displays which checks open ports on a network and shows which are available for communication. Subsequently, this standardizes ports and port forwarding for all users. For example, port 25 is reserved for SMTP (Simple Mail Transfer Protocol) across networks. In many cases, port numbers are reserved for specific protocols across all routers.

However, lower-number ports are most often used. There is an IP range for available IP addresses similarly, between the User Datagram Protocol (UDP) ports and Transmission Control Protocol (TCP) ports, there are 65,536 ports open for communication. Ports are all assigned a number and standardized across all network devices. Hypothetically, for example, if you wanted to enable remote desktop on a Windows PC within your network, you'd need to make sure port 3389 was open and forwarding to the appropriate computer. Therefore, computers are able to distinguish between different kinds of traffic. They are software-based, each uniquely associated with a specific process or service. Network ports are used for routing incoming information from a network to specific applications to a designated machine. What is a port?Ī port, referred to as a server port or Internet port, is a virtual point of network connection. Scan your network for open ports and determine if those open ports need to be closed to provide more network security and less vulnerabilities. The advanced port scanner tool will provide you with information regarding valid methods of connecting to a network.

Advanced port scanner online