Transport error: Communication failure error

[Former Member]

I am trying to access Crystal Enterprise that is behind a firewall and am getting an Transport error: Communication failure error. I have tried the following:

1) Opened the 6400 port for the CMS.

2) Set -requestport in the command line to a different port, that is also open, for the Output Server and the Input Server.

Does anyone know what I am doing wrong? I haven't been able to locate the documention on how to run behind a firewall. I am newby on the admin side.

I am running this on Windows 2003 server.

Thanks in advance.

[Former Member]

Thanks for your help. We wound up setting the -requestport for the CMS, Input, Output and RAS and opening those ports in the firewall. I finally stumbled upon this link which was helpful.

https://www.sdn.sap.com/irj/boc/index?rid=/library/uuid/0047e5f4-3140-2b10-1bae-de175e4c741c&overrid...

Seems like things are working now.

[kalpesh_pandey]

I can tell you from Business Objects Enterprise perspective. 6400 is the port on which CMS listens. We have web server in the DMZ so we had to open another set of ports also. We opened 2000-5000 ports also between Web server and application server ( where services are installed). The reason being that CMS listens on 6400 but other services listens on randomly selected ports different from 6400. Look into the registry entry and you will find CER. Inside CER there are two Keys RequestLowerPort and RequestUpperPort. We have defined these as 2000 to lower and 5000 to upper one.

You can set ports using -requestport and open that ports and see how it works. Opening only 6400 would not work is my guess.