how to avoid mozilla asked credentials in SSRS Reports?

Hi,

I deployed an SSRS report on my PC and am able to access my report through report manager.

When I copied that report URL and opened it on another PC over the network, it asked for credentials for MozillaFF.

i tried like in FF,

The      about:config "This might void your warranty!" warning page may appear. ClickI'll be careful, I promise!, to continue to the about:config page.

1. In the about:config page, search for the preference network.automatic-ntlm-auth.trusted-uris, and double-click on it.

I added my server URL here,by that time its directly opened.

I think its not correct way, If i pass URL to 100 systems did i do like above?

Can anyone help me How to resolve it?

How to avoid credentials (username and password) to open directly ?