871W DHCP (not PPPoE) Worksheet Issue

I am having trouble with this 871W. After configuring the router with this worksheet, I am not able to login to the SDM console. I can ping network 1 and network 2, but when I go into the web browser and enter the ip addresses I get an error about HTTP and HTTPS. On the worksheet, I’ve enabled the HTTP and HTTPS options.

Network 1 ID:
192.168.10.1

Network 2 ID:
192.168.20.1

I can ping both ip addresses fine.

I need to get into the SDM so I can configure other things.

I am new to Cisco routers and please help.

Gary