How to get Streamer through the firewall on the desktop or laptop?


If your On-Prem app can't see the streamer computer or can see the streamer computer but can't connect to it, this could be due to the possibility that the ports being used (6783, 6784, and 6785 by default) are blocked by a firewall from the OS or third-party antivirus or security software.  Or possibly the specified ports are being occupied by other applications like Skype or others.

Here are some suggestions for you to try in various conditions.

1.  Sometimes, just a simple computer restart, or un-installing the Splashtop On-Prem app from the tablet or phone and then re-installing again, can solve this issue. 

2.  For Windows 7:

Please add another firewall policy for opening ports 6783, 6784, and 6785, which are used by Splashtop by default. 

[Procedure]:  Open the Windows Start Menu, open the All Programs list, type "firewall," access the Advanced Firewall Settings.  Go to Inbound Rules, click New Rule... in the right panel, select the Port button, then click Next>




Select TCP, then type 6783-6785, as shown below.



It's better to re-start your computer after performing the above settings.


3.  For XP and Vista:

Go to Control Panel -> Windows Firewall, and make sure  Don't allow exceptions or Block incoming connection is unchecked.




Please also add the files described in section #5 below into the Exceptions tab of the above window.



4.  For Mac:

4.1  Turn OFF Firewall.

4.2  However, if you need to keep the firewall ON,  the following steps must be followed.

4.2.1  [Procedures]:  System Preferences -> Security & Privacy -> Turn On Firewall, click Firewall Options...




4.2.2  Disable (uncheck) the Block all incoming connections checkbox, as shown below.

4.2.3  Enable (check) Automatically allow signed software to receive incoming connections, as shown below.

4.2.4  Click the "+" button (indicated in the illustration below), if you can't find "Splashtop Streamer" in the list.




Shown below is a sample screen after clicking on the "+" button:




4.2.5  If the message box below appears, about "SRStreamerDaemon" or "SRProxy," click the Allow button.  This message might pop up after the first launch, after the Mac Streamer has been installed.  (Only for Mac Streamer v2.3.0.4 or later versions.)



4.2.6  Remember to re-start your computer if any firewall settings have been modified.



5.  Here is another good tip that could help you solve this issue.  If you are an old user of Splashtop v1.x and if you had ever manually added files of Splashtop Streamer into your firewall exception list, please remove them and re-add them again for Streamer v2.x.



6.  If you still can't get rid of the "satellite" icon after trying the above suggestions for Windows 7 or for Mac, please check your computer and try to find the anti-virus or security software currently being used on your computer, if any.  This link provides a list of firewall products we've collected, plus instructions that can help you properly adjust the firewall settings for Splashtop according to your particular firewall product.

If you have looked at the list and instructions we have comprised and found that the list does not include the antivirus/security/firewall software you've installed, then please try to manually add the following Splashtop Streamer files into the "exception list" of the firewall product you are currently using.


Program Folder to find these files:

C:\Program Files (x86)\Splashtop\Splashtop Remote\Server

─ OR ─

C:\Program Files\Splashtop\Splashtop Remote\Server


 Application Files:







7.  If the ports are being occupied by another application, but you don't know which application (you may get a "Splashtop server is not reachable..." error message in this case), change the ports used by Splashtop as a work-around.  Please try to change the starting port number from 6783 to another one, such as 8783, to see if there is any difference.  You can manually change port numbers in the Port field of the Others tab in the Streamer dialog box.





8.  Sometimes the settings on the router will also cause a local Streamer to be recognized as a remote one.  Please check the following options to see if any of these cases applies to you.

a)  If the "UPnP" option is in your router settings:  Please try to disable/or enable this option on your router to see if there's any difference.

b)  If the "AP Isolation" (or "Client Isolation") option is enabled:  This option usually appears in some router firmware like DD-WRT, Buffalo, DrayTek, TP-Link, D-Link, or Linksys;  and if it happens to be enabled, all connections to this router will be treated as independent.  Therefore, disabling this option should solve the issue.

c)  DrayTek (i.e. Vigor 2930) and Buffalo (i.e. WZR-HP-G300NH2) define two options for similar purposes as AP Isolation:

1. Isolate LAN (DrayTek) or Separate feature (Buffalo):  Separate two communication groups by WAN and LAN (Ethernet).  Disabling "Isolate LAN" or enabling the "Separate feature" can enable the communication between WAN and LAN.

2.  Isolate member (DrayTek):  Different users connecting to different SSID won't be able to communicate with each other if this option is enabled.  Some routers, like the DrayTek router, may have the feature to share multiple SSID from the same router.


*Sample illustration using the Buffalo WZR-HP-G300NH2 router:



*Sample illustration using the DrayTek Vigor 2930 router:



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