Here is an example of a named ACL to Block Specific even HOST sources to
destination port 23 to the address you specified. You can use:
ip access-list extended BLOCK_TELNET_EVEN
deny tcp 192.168.2.0 0.0.0.254 host 192.168.1.254 eq telnet
permit ip any any
Just practice and play with the BITS in the MASK.. You can achieve this
type of scenario in 1 statment..
-Sal
Yong Wee wrote:
>
> Hi,
> How do you write an ext acl to block telnet access from even
> addresses in
> subnet 192.168.2.0/24 (i.e, .2, .4, .6 etc) to server
> 192.168.1.254?
>
> thks,
> yongwee
>
>
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