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.