I have 3 machines attached to a Cisco switch off of a Cisco 2801 router. I'm attempting to only allow 3 open ports to inbound traffic (to all three machines) utilizing an ACL on the router.
Here's my problem... the below ACL takes effect for just one server-it allows all 3 ports on server 1- but server 2 and 3 get all ports blocked to them. Once I remove the ACL I have access to all 3 ports on all 3 machines.
Router Config - (abbreviated) Int eth0/1 IP Access-group 101 in
access-list 101 permit tcp any any eq 21 access-list 101 permit tcp any any eq 22 access-list 101 permit tcp any any eq 4444 deny ip any any