Sorry if this question or situation has been covered. I've been searching around a bit with no good results for the situation I am trying to work out. My Network Map Connections : Cable Internet Router Modem (Bridge Mode) -> Router (No wifi enabled / dd-wrt / DHCP server + firewall) -> 16 Port gigabit ethernet switch (unmanaged) supplying the following 3 x Airport Extreme (Provides wifi access to various iPhones & iPads / All in Bridge mode) 1 x mac mini with 2 ethernet ports (Acts as iTunes media server + file server + DNS | Using Mac OS Server also) 2 x iMac 2 x PC's 3 x appleTV (3rd Generation) 2 x Android M8S boxes 1 x Cisco SPA112 VoIP Box 1 x Lacie 2Big NAS (Used for automated backups) 1 x 5 port gigabit ethernet switch (unmanaged) What I want to accomplish : My mac mini server has 2 x ethernet ports. I want ethernet port #1 to access the internet normally via the 16 port switch. I want ethernet port #2 to connect to the 5 port ethernet switch and have the Lacie NAS connected to this switch to provide internal/intranet backups. A separate network with no internet access. (Mac mini -> ethernet port 2 -> 5 port switch -> Lacie NAS) All other computers need to access this NAS also for files and backups. What I’ve tried : With no great success I have the dd-wrt router handling DHCP. My mac mini ethernet port #1 ip = 10.0.1.10 (static) Subnet Mask = 255.255.255.0 Router = 10.0.1.1. I’ve tried setting various combos for ethernet #2. ip = 192.168.3.2 (static) Subnet Mask = 255.255.0.0 Router = 10.0.1.1 (won’t let me set to 0.0.0.0). On the Lacie NAS I have tried various matching combos of ethernet port #2 except for the ip address which is assigned as static. What has happened so far : I am able to access the Lacie NAS on the mac mini, however, no other computers are able to access the NAS. I’ve tried from the Finder - Go -> Connect to Server afp://192.168.3.10 (complains unreachable). Does not show up under Finder -> Network (only on mac mini). Can you help? If you are able to assist I would be very happy. I’ve tried to be as descriptive as possible in setup and what I am trying to accomplish. (Is this possible?!?!) Accurate instructions (with examples if possible) would be great! Thanks for any help in advance.