Limit bad users

configure terminal
!
access-list 50 permit 192.168.1.3 0.0.0.0
!
interface vlan1
rate-limit input access-group 50 96000 24000 32000 conform-action transmit exceed-action drop
rate-limit output access-group 50 8000 1500 2000 conform-action transmit exceed-action drop
!
end