The MAC address or the physical address should be enabled, as it keeps a track of the MAC addresses of all the devices, which connect to the network. It is also recommended, that static IP address be assigned to the device. Normally dynamic IP addresses are assigned. You will have to turn off DHCP on the router. So that your computer cannot be directly reached from the Internet, you will want to use a private IP address for your computer. Firewalls should be enabled on the computer as well as the router. If you are not going to use your network for an extended period of time, you will want to turn it off. So that your router is not hacked into, you will have to take the appropriate steps mentioned in this article on how do I secure my wireless router. At the same time, you will also want to be careful all the time to ensure, your network is safe as the hacker will always find out ways to hack into your system.
