Epson Stylus NX420 - Manual (Page 12)

12 Wireless Network Setup
7. When you see the Firewall Warning screen, click Next .
Note:
If you see a firewall alert message, click Unblock or Allow to let EpsonNet Setup
continue. Do not select Ask Me Later, Keep Blocking, or Block.
8. Wait while EpsonNet Setup configures your printer for the network.
9. When you see the Installation Complete screen, print a test page, then click
Finish .