Port Checker & Scanner: Discover Open Ports and Services on Your Network.

Is an instrument to verify if a certain port on a device or network is open or closed. To find out whether the port is open and accepting connections, it operates by making a request to the designated port and waiting for a response.

It can be used to check if the service or application is operating on the right port, uncover potential security threats, and troubleshoot connectivity issues.

To use this port checker, enter the IP address or domain name of the device or network you want to scan, along with the port number you want to check. The port checker will then scan the specified port and provide you with information about whether it is open or closed.

While using a port checker is generally safe, it is important to be aware that port scanning can be used for malicious purposes, such as identifying vulnerable systems for exploitation. It is important to only use port checkers for legitimate purposes and to avoid scanning systems without the owner's permission.

By regularly scanning your network with a port checker, you can identify and address potential security risks, such as open ports that may be vulnerable to attack. You can also use a port checker to verify that only authorized services and applications are running on your network.

A TCP scanner is designed to scan for open TCP ports, which are commonly used for web browsing, email, and other applications that require a reliable connection. A UDP scanner, on the other hand, is designed to scan for open UDP ports, which are commonly used for streaming media and online gaming.

You may identify and fix any security issues, such as open ports that might be exposed to attack, by routinely using a port scanner to scan your network. A port scanner can be used to confirm that only permitted services and programs are active on your network.

Some of the most commonly used ports on the internet include:

Port 80: HTTP (Hypertext Transfer Protocol) for web browsing
Port 443: HTTPS (HTTP Secure) for secure web browsing
Port 25: SMTP (Simple Mail Transfer Protocol) for email transmission
Port 110: POP3 (Post Office Protocol version 3) for email retrieval
Port 143: IMAP (Internet Message Access Protocol) for email retrieval
Port 53: DNS (Domain Name System) for resolving domain names to IP addresses
Port 22: SSH (Secure Shell) for remote access and secure file transfers
Port 21: FTP (File Transfer Protocol) for file transfers
Port 3389: RDP (Remote Desktop Protocol) for remote access to Windows computers

These ports are used by a variety of applications and services to communicate over the internet and are often targeted by attackers seeking to exploit vulnerabilities or gain unauthorized access to systems. As such, it is important to ensure that these ports are properly secured and monitored to help protect against potential threats.