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Port Checker – Check for Open Ports Online for Free
Port Checker check for open ports online for free. Our free Port Checking Tool will allow you to check any IP Addresses or Domain names for publicly open ports. We have also provided a comprehensive list of the most commonly used ports that are required to run a certain program on any standard computers. The list below also contains all the default protocols that should be properly using the said ports for example the port 21 it should be running the FTP (File Transfer Protocol). Another example is the port 22 which will be running the SSH Protocol. There are so many ports online but only 24+ of them are the most common.
What is Port Forwarding?
According to Wikipedia Port Forwarding or Port Mapping is an application of network address translation that redirects a communication request from one address and port number combination to another while the packets are traversing a network gateway, such as firewall or router. Refer to this Wikipedia post for more information.
Port Forwarding Checker
Our tool can also help if you have port forwarding projects that need to be checked if a port or a set of ports are successfully broadcasted online.
How it works?
- Enter the Domain or IP Address that you want to validate.
- At the second input form enter the Port that you want to check. (Note: If you want to check other ports a list of commonly used ports are also provided above.)
- Lastly, click select now button and a notification will be displayed weather the port that have scanned is open online or not.
Complete List of Frequently Used Ports
|21||FTP||File Transfer Protocol|
|25||SMTP||Simple Mail Transfer Protocol|
|43||WHOIS||“WHOIS” Protocol obtaining the registration of ownership of domain names and IP addresses|
|53||DNS||Domain Name System|
|67||DHCP||Dynamic Host Configuration Protocol|
|69||TFTP||Trivial File Transfer Protocol|
|80||HTTP||Hyper Text Transfer Protocol|
|110||POP3||Post Office Protocol Version 3|
|115||SFTP||SSH File Transfer Protocol. Secure data transmission protocol.|
|143||IMAP||Internet Message Access Protocol. Application-level protocol for accessing e-mail.|
|161||SNMP||Simple Network Management Protocol|
|443||HTTPS||HyperText Transfer Protocol Secure|
|515||LPD||Line Printer Daemon. Remote printing protocol on the printer.|
|993||IMAP SSL||Protocol IMAP, supports SSL encryption.|
|995||POP3 SSL||POP3 protocol supports SSL encryption.|
|1080||SOCKS||SOCKET Secure. Receiving protocol secure anonymous access.|
|3128||Proxy||Currently the port often used proxies.|
|3389||RDP||Remote Desktop Protocol – Remote Desktop for Windows.|
|5900||VNC||Virtual Network Computing|
|8080||HTTP||Alternate port for the HTTP protocol|
How IP Addresses works?
IP Address works by providing unique 32-bit number (ex: 192.168.1.1) on a certain domain or host and provide the searcher with data’s on the website that contains that IP Address (ex: www.website.com = 192.168.1.1). Domains are created to make it easier for searchers to type and remember the website names rather entering 32-bit numbers on their screens.
How to Secure my IP Address?
To secure your IP Address it is best that you use VPN (Virtual Private Network) providers. These companies will help you hide, secure and redirect malicious attackers on even knowing accurate details about your IP Address.
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