Solution:
R30
show ip access-list
config t
ip access-list extended 120
5 permit eigrp any any
wr
R20
config t
ip access-list extended 100
permit tcp 192.168.25.0 0.0.0.255 any eq 23
class-map match-any TELNET
match access-group 100
policy-map CoPP
class TELNET
police 10000 conform-action transmit exceed-action drop
control-plane
service-policy input CoPP
wr