i try to use a Cisco C3550 24 EMI to split a single Hostaddress from a 26er subnet. My idea is, on one port i connect the cable to the 26er subnet (vlanWAN for example), on the second port i connect the firewall for most of the IPs (vlanLAN for example) and now on the third Port i connect the single host i try to split (vlanCustomer1 for example).
By the way my idea is, to set allow/disallow for each IP in the subnet. So to Port 3 (vlanCustomer1) i allow only 1IP and the rest to port 2 (vlanLAN) and on Port1 (vlanWAN) i allow all IPs. Is that possible?