--- title: "Port Checker Tool" date: 2024-10-15 author: "Pavan Lipare" featured_image: "https://datafeature.com/wp-content/uploads/2025/02/port-checker-network-tool-4.jpg" --- # Port Checker Tool --- # Is My Port Open? This is a free tool that you can use to check if a particular port on your PC or gadget is available for public use. This is used regularly to test whether port forwarding is set on your machine. For a particular product, people should be able to access a particular port in general. ## Popular Ports A well-known and highly preferred port is a port having a port assigned to each protocol of the network service itself. Port numbers range from 1 to 65,535, with well-known ports pre-defined by IANA as a standard convention. **Port Range** Category Description **Examples** 0-1023 Well-Known Ports Assigned by IANA for common services HTTP (80), FTP (21), SMTP (25), DNS (53) 1024 – 49151 Registered Ports Used by specific applications and services MySQL (3306), RDP (3389), PostgreSQL (5432) 49152 – 65535 Dynamic/Private Ports Temporary ports for client-side connections Ephemeral port usage in TCP/UDP communication One of the more widely used and more common protocols, FTP has a port number of 20 for data transfer. Below is a list of other common well-known protocols and their associated port numbers. Port Number(s) Protocol Description 20, 21 FTP (File Transfer Protocol) Transfers files between client and server 22 SSH (Secure Shell) Secure remote login and command execution 23 Telnet Unencrypted remote login service 25 SMTP (Simple Mail Transfer Protocol) Email transmission between servers 53 DNS (Domain Name System) Resolves domain names to IP addresses 80 HTTP (Hypertext Transfer Protocol) Standard web browsing 110 POP3 (Post Office Protocol 3) Retrieves emails from the mail server 115 SFTP (Secure File Transfer Protocol) Secure file transfers over SSH 123 NTP (Network Time Protocol) Synchronizes time across devices 143 IMAP (Internet Message Access Protocol) Accesses and manages email on mail servers 161 SNMP (Simple Network Management Protocol) Monitors and manages network devices 194 IRC (Internet Relay Chat) Real-time text communication 443 HTTPS (Hypertext Transfer Protocol Secure) Secure web browsing 445 SMB (Server Message Block) File and printer sharing over networks 465 SMTPS (SMTP over SSL) Secure email transmission 554 RTSP (Real-Time Streaming Protocol) Streaming media control 873 RSYNC Fast file synchronization protocol 993 IMAPS (IMAP over SSL) Secure email access 995 POP3S (POP3 over SSL) Secure email retrieval 3389 RDP (Remote Desktop Protocol) Remote desktop access 5631 PC Anywhere Remote control software 3306 MySQL Relational database service 5432 PostgreSQL Open-source relational database 5900 VNC (Virtual Network Computing) Remote desktop sharing 6379 Redis In-memory key-value data store 8333 Bitcoin Peer-to-peer Bitcoin transactions 11211 Memcached Distributed memory caching system 25565 Minecraft Multiplayer server port for Minecraft ## What Is Port Checker ### Port Definition A port is the endpoint needed for correspondence within a network frame. Any physical or wireless connection ends at the port of an equipment vehicle. In operation, a port is a consistent system that resembles a particular procedure or any network management. Port numbers are 16-part unsigned numbers in which they are defined. Number is a mixture of convention and address. Rules that use port numbers include Transmission Control Protocol (TCP) and User Datagram Protocol (UDP). Port numbers are normally understood and listed in two zones. The ports of Internet administrations that have a specific port are noteworthy. For example, port 25 is for SMTP, and port 80 is for HTTP. The ports listed are temporary for customers who change every time someone uses it. Otherwise they are called temporary ports because they work for a short time. The agreed ports range from 1-1023 and the registered ports are 1024-65535. ### Open Ports vs. Closed Ports A port that can accept data packets in a network correspondence is an open port. A closing point is a port that rejects connections or ignores targeted areas. ### What Is Port Forwarding? Port sending is a method for rerouting the information implied for a specific IP/port blend to another PC’s IP/port mix. A program running on the host as a rule deals with the redirection, yet it can likewise occur because of a firewall, router, or intermediary server. Normally, the host detects the header of the IP address and sends it to an interface. This interface sends the information to the destination specified in the header. When the port is sent, the block attempt application examines the header, notes the destination, and sends the packet to another PC after changing the header. The next host may have an alternate IP address on a similar port, an alternate port on a similar IP, or a mixture of the two. ## How To Check Open Ports On Your Router 1. **Using the Netstat command** You can run the netstat – direction in the demand direction of your computer and check the open ports. Under the status segment, “Setup”, “CLOSE WAIT” or “WAIT TIME” are the ports open for the association. Ports with a “tuning in” status may be open on the PC, but not on the router. 2. **Router Console** You should view the open ports that belong to your router: You can also go to your router’s admin interface page (via IP address) and check the open ports. 3. **Port Checker Tools** In addition, online port controller applications allow you to check the status on the port, and the necessary checks are performed by your router.