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TCP port checker
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Successfully connected to 54.39.237.100:9678 |
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TCP port checker (TCP port tester) is an online TCP client that checks TCP server connectivity and accessibility from the Internet. It can be used to check an arbitrary tcp port on a remote server. TCP port checker attempts to establish a TCP connection from our ip address (IPv4: 45.79.3.202, IPv6: 2600:3c00::f03c:91ff:fe67:aa7c). If connection is successful you should be able to see it in the server logs. Below are the most commonly used tcp ports.
Port | Service |
21 | FTP (File Transport Protocol) - file storage and retrieval |
22 | SSH, SFTP - secure shell and SSH based FTP |
23 | Telnet - non-secure shell |
25 | SMTP (Simple Mail Transfer Protocol) - sending and receiving email messages |
53 | DNS (Domain Name System) - mapping from hostname to ip and vice versa |
80 | HTTP (HyperText Transfer Protocol) - main protocol of world wide web |
110 | POP (Post Office Protocol) - mail retrieval protocol |
123 | NTP (Network Time Protcol) - time synchronization protocol |
143 | IMAP (Internet Message Access Protocol) - mail retrieval protocol |
156 | SQL - relational database |
161 | SNMP (Simple Network Management Protocol) - network configuration protocol |
162 |
179 | BGP (Border Gateway Protocol) - routing configuration protocol |
389 | LDAP (Lightweight Directory Access Protocol) - distributed directory |
443 | HTTPS - secure HTTP |
636 | LDAPS - secure LDAP |
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