Tripredacus, Many thanks for your reply. Yes, correct. This is a home network with a main computer running Windows 7, a Synology NAS DS1511+ and 3 Laptops connecting wireless. The Router (192.168.1.1) is a Comtrend with a wireless access point and connects to the main computer (192.168.1.5) . The router has DHCP activated and uses the DNS of the ISP provider. This is the result of ipconfig/all Ethernet adapter Local Area Connection 3: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Realtek RTL8139/810x Family Fast Ethernet NIC Physical Address. . . . . . . . . : 5C-D9-98-4C-16-E2 DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes Link-local IPv6 Address . . . . . : fe80::ec53:6142:d539:4b55%17(Preferred) IPv4 Address. . . . . . . . . . . : 192.168.1.4(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 192.168.1.1 DHCP Server . . . . . . . . . . . : 192.168.1.1 DHCPv6 IAID . . . . . . . . . . . : 475847064 DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-15-84-25-70-1C-6F-65-D9-47-AD DNS Servers . . . . . . . . . . . : 80.58.61.250 80.58.61.254 NetBIOS over Tcpip. . . . . . . . : Enabled Is this information enough? If this is not the case please let me know what additional info do you need Thank you