Blocked Adobe Port 1935


A blocked port can sometimes cause even a correctly installed program to fail to work. This can cause frustration, especially because it looks like the server program has been installed in the correct manner yet still refuses to work. Adobe software uses a number of ports, including port 1935, in order to communicate with clients. If you find yourself faced with a blocked 1935 port in Adobe, there are a couple of different solutions that you can try.

Computer Ports

  • Ports are used on computer servers for communications over networks. Each port is given a number and associated with a service. The HTTP (Hypertext Transfer Protocol) that web browsers use to communicate, for example, uses port 80 to connect to a server. Another popular program, Telnet, uses port 21. These ports can be opened and closed by the computer server or specific programs. In addition, internal software such as firewalls, or external devices such as switches and routers, can block ports when requested.

Adobe Software

  • The major Adobe programs that use port 1935 are Flash Media Server, Flash Player and Adobe Air. The Flash Media server listens to port 1935 for RTMP (Encrypted Real Time Messaging Protocol) while Flash Player and Adobe Air use port 1935 to send their requests back to the server. These ports must be open for the Adobe software to function correctly.

Unblocking Ports

  • The easiest way around a blocked Adobe port 1935 is simply to unblock it. The difficult part of this process, however, is determining exactly where the port is blocked. Start at the server itself. Check the Windows firewall settings (if running on a Windows server) or use a port-monitoring utility on a Linux box. Unblock the port using the appropriate administrative command. If the port is not blocked on the server, trace a route from the server to the external connection and check for any devices along the route, such as a router, that may be blocking port 1935.

Specifying a New Port

  • If you find that there is another process utilizing port 1935, it's possible to specify a different port for the Adobe server. Navigate to the root installation of the Adobe server and then the "conf" directory. Inside the "conf" directory, locate the "fms.ini" file and open it with a text editor. Locate the line that reads:

    ADAPTOR.HOSTPORT = :1935,80

    Change the "1935" port number to your new port. Save the file in the text editor and restart the server. Make sure that any firewalls or routers are opening this port number as well, or the server will continue to be blocked.

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