tags:

views:

53

answers:

2
Q: 

What port is used by Java Web Start?

Hi,

May I know what port is used by Java Web Start? If I want to connect a Java Web Start client to a Java Web Start server, what port I need to open at the server side so that the client can connect to it?

I want to set up a firewall in the server machine but I don't know which port I should open.

Thanks.

+1  A: 

My understanding is that JNLP files are retrieved via HTTP by the webstart client, so there should be no special port handling required.

skaffman  2010-06-18 16:07:33
I'm surprised to know that... But, I need to key in username and password before I can download the web start application, if those information are sent using HTTP, can I say that it is not very secure? Because anyone with a packet sniffer will be able to see the username and password in clear text.
kwc  2010-06-18 16:16:01
@kwc: Arguably, yes, but that's a whole different question...
skaffman  2010-06-18 16:28:19
A: 

Java Web Start does not have a "Server" component. The most common setup is to host the files on a webserver. This is commonly hosted on port 80 (JWS however can use any file transport system supported by Java, such as UNCs or FTP).

mlk  2010-06-18 16:09:25
@mlk: Is it possible to host the web start application files on HTTPS port?
kwc  2010-06-18 16:42:14
You can host the application using HTTPS just fine too.
laz  2010-06-18 19:59:21
@laz: Thank you.
kwc  2010-06-19 02:26:04

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