We have a HP ProCurve 2910al-24G-POE+ switch. Is there any possibility to implement MAC filtering at a specific port only (eg. port 23 & 24 only)? The scenario is, we have IP phone in conferencing room, but I don't like visitors connect to office network via IP Phone LAN port. I will only authorize a few laptops to use that port. The Data & Voice network are not in different VLAN, also there is no plan to put them into different VLAN because all staffs are using LAN port of the VoIP phone connect to network.