Some more details about your config would have helped. Anyway I will give it a shot. I expect the router being configured with a PPPoE or a PPPoA client on a dialer interface (if not adapt ...)
Therefore you configure an ip access list as follows:
access-list 1 permit 192.168.16.0 0.0.0.63
and you apply it to the LAN ethernet (ethernet 0?)
ip access-group 1 in
Be wary that this will prevent access to the router to those IP's.
In case you wish to apply the access-list to the wan ethernet outboud (or the dialer) the problem is that the access list would be tested after the NAT and therefore it would not match because the source address has already been changed.
Therefore you need to change the NAT to only NAT the permitted addresses and then change the outbound access list to deny the prohibited desired range.
access-list 1 deny 192.168.64.0 0.0.0.63
access-list 1 permit any
This needs to be applied to the outbound dialer interface in the out direction.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.