What is the online port scanner?
Online port scanner is a web application that will monitor a designated computer, server or any other host for open ports. It is most often used for security purposes, to check vulnerability on the router, firewall, server or computer. Online port scanners are often free and are available for public use.
Port, with regard to computer, is an entrance to computer traffic to access the network or computer. It is an access point for a protocol, which is basically a language used in network creation. The protocol, called Suite Internet Protocol Suite, has several layers; The layer used ports is a transport layer. Ports are also assigned to their identification, so applications and processes know where to access a computer or network.
Many ports are commonly used by specific services or applications for routing their specific operation via the Internet or internal network. For example, the Hypertext Transfer (http) protocol usedVWORLD WIDE Web is usually associated with Port 80. Web servers will listen to this port for incoming operation and most browsers are set to Port 80 by default.
When the port is scanned, it is checked whether it is open, closed or blocked. If the port is open, it can be used or connected to an application or process. Port Scans is usually performed either by hackers, people looking for a malicious use of the harbor, or someone trying to protect the port like a network administrator. If the network administrator detects a port that should not be, it can simply program a computer or router to block or close this port. They can also program this so that only certain types of operations filter through it.
Online port scanner is usually hosted by a company that offers port scanning capabilities over the Internet. This is the most useful with smaller networks like jE domestic network, because they are often limited by scope and are not worth financially or practically buying port scan software. The online port scanner will usually scan ports looking for open, closed and blocked ports. Some of them may also indicate what ports are used and according to who listed addresses of the Internet protocol (IP). This can help identify any vulnerability or if someone approaches a network or computer.
Many Internet Services (ISP) providers blocks port scanning on larger scales. This prevents one user from accessing another user on ISP network using port scan or online port scanning. Most Internet service providers usually allow only the applicant's network to scan the online port scanner.