Firefox FF browser agent how to modify

We want to set up the agent need to open Firefox after we click on the image shown in the upper right corner of the "Open menu" button

Then in the pop-up drop-down box we click the "Options" button, the effect shown in the following image

Then in the interface we click on the "Advanced" button shown in the Red box

Click on the "Configure Firefox how to connect to the Internet" setting button on the right

Then we need to manually configure the code, as we configure it like this ... mozilla.org,.net.nz,192.168.1.0:24

Small knitting think agent can use Google's a proxy plug-in, very good and is the official development of Oh, open that browser automatically set agent, retired automatically shutdown agent.