Answers:
I reflect on you will have need of a firewall for that ... or you can apply an access inventory to the router if you know how to do it.
if u using router consequently enter the command within router config mod
router(config)#access-list 1 192.168.0.1(his ip address)0.0.0.0
router(config)#access-list 1 grant any
router(config)#interface e0
router(config)#ip access-group 1 out