Your current IP Address: 3.226.76.216
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Port Scanner
In order to use our DynDNS Service (also known as DDNS), the ports required have to be released. In many cases, firewalls block access to the server / NAS. You may use our Port Scan in such a case in order to check which ports are blocked or released. Don't forget to release the ports in the router as well.
Enter the start port and final port as close as possible, a rather large bandwidth takes a long time to scan. Make sure that the computer is configured as "public network".
Note:
You may scan the ports of your server or router, a port-check (scanning) of other servers or hosts is blocked (impossible) due to security reasons. In order to prevent abuse, your IP Address will be saved in our database. With the use of our scanner you are giving your express consent.
Here you find a list of standard ports.
To make sure that the ports are not blocked (without an open port it is NOT POSSIBLE to use a DynDNS service!), please perform a check of the required ports. When you insert your Updater-URL into your router, do not forget to edit the port & release. Our scanner can also be used to verify a port forwarding (forwarding), so you will receive information about possible sources of error.
To make sure that the ports are not blocked (without an open port it is NOT POSSIBLE to use a DynDNS service!), please perform a check of the required ports. When you insert your Updater-URL into your router, do not forget to edit the port & release. Our scanner can also be used to verify a port forwarding (forwarding), so you will receive information about possible sources of error.
| Port | Program | Application - Information | UDP/TCP |
| 21 | FTP Server | File Upload / Download FTP | Yes/Yes |
| 22 | SSH | Secure Shell - Server Access | Yes/Yes |
| 23 | Telnet | Terminal Emulation | Yes/Yes |
| 25 | SMTP Mailserver | eMail Transfer | - / Yes |
| 80 | Webserver - WWW | HTTP - Webserver | - / Yes |
| 8080 (old) | Webserver | HTTP - Webserver | Yes/Yes |
| 43 | Whois Protocol | Domaindata Request | - / Yes |
| 53 | DNS (Domain Name System) | DNS Request | Yes/Yes |
| 79 | Finger | User Informationen | - / Yes |
| 110 | Mailserver | eMail Transfer | Yes/Yes |
| 115 | SFTP | Simple File Transfer Protocol | - / Yes |
| 139 | NetBIOS | Network Basic Input Output System | Yes/Yes |
| 143 | IMAP | Mailbox Administration | - / Yes |
| 443 | HTTPS | Encrypted Data Communication - SSL | - / Yes |
| 465 | SMTPS | Encrypted eMail Transfer SSL | - / Yes |
| 1433 | MSSQL | Microsoft SQL Server (Database Management) | - / Yes |
| 2638 | SQL | Anywhere Database Server | - / Yes |
| 3051 | Galaxy Server | Gateway Ticketing Systems | Yes/Yes |
| 3306 | MySQL Server | Database Access | Yes/Yes |
| 3389 | Windows Remote Desktop | Remotedesktop Access | Yes/Yes |
| 5900 | Real VNC | Viewer Access | Yes/Yes |
| 51234 | Teamspeak | Communikation - Conferences | Yes/Yes |
| 5421 | Network | Netsupport Manager | Yes/Yes |
| 5984 | Couch DB | Database Server | Yes/Yes |
| 6112 | Warcraft III | Game Software Hosting | Yes / - |
If the port scan will be successful (port open), you can input your current IP Address (you can find on the top of our page) + scanned port in the browser line and already reach directly externally your home server / NAS / computer / IP Cam.
Sample input in the browser line: 000.00.00.00:80 (actual IP Address: port). Thus, the prerequisites are created, with our DynDNS service to reach your Web server statically externally ('s connectivity).
There currently are 116515 Dyn Domains and 144733 user registrier.
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