Originally Posted by diamondnular
2. How I can secure my box as many softwares as in Windows? And where should I read and learn about security stuffs?
That's a good one. For the home based wireless network there are several deterrents to help but most people do not implement them. If someone is getting in using your 192.168.0.4 ip address they getting in on the LAN side not the WAN side probally wireless unless they have a cable to your router. Some of the easier holes to plug are:
1. Disable broadcast SSID (Take this with a grain of salt but this only deters the casual freeloading or someone trying to get in)
2. Enable encyrption WPA at the minimum WPA2 is better LEAP/PEAP better VPN is better still. If using WPA/WPA2 use a 10 character password and not one that is a reconizeable word.
3. Enable MAC filtering even those MAC adresses can be spoofed
4. If using DHCP limit the number of IP addresses that can be assigned. Most people miss this one, if you have 2 wireless device limit the range from 192.168.1.2 to 192.168.1.3, that way if both your wilress device are on and connected no else will be assigned an IP
5. Use SSH with password and the same applies, do not use a reconizeable word, use random characters.
There are a few more that are more complicated to use, but if your only worried about someone getting into your box, turn it off if not in use. Fedora does a pretty good job of securing itself out of the box but there is always room for improvement