how to use router1841 to share internet access

[wasiutrade]

I want share internet access using router 1841 and also restrict some certain workstation from access the internet

[cdusio]

Put in an inbound ACL on the inside interface

access-list 101 permit ip "workstations all destination internal networks"

access-list 101 deny ip "workstation1 destination any

etc...

then

access-list 101 permit ip any any log

apply it inbound and that should work if I understand your question.