- It is assumed that you have internet access on your linux server and that there are two NIC cards on the server with installed NIC drivers. You also have a switch/hub connected to the second NIC card for your local network)
We will install FireStarter, setup and install DHCP to be used by your internal NIC.
Note the private NIC is your interanl NIC connected to your LAN and the public NIC is connected to your internet, or also known as your ISP.
Install setup DHCP:
-type yum instsall DHCP
And that si all you ahve to do. (simple and fast!)
Install setup FireStarter:
- login to your server as root or when you open your terminal window, login as SU.
- Within the terminal window:
Type yum list (this will ocate the name of the friestarter package, if you can not locate the package see if you can get to it by running yum search firestarter. You should get a return of the package and version). - Type yum install [name of package] for example yum firestarter.i386 and then follow the promtps.
- Within your GUI Linux desktop, click Applications, System Tools, Firestarter on fedora 7.0
- A wizard will start automatically, read the prompts, click Forward
- Select the public nic that is connect to your internet or ISP, make sure you select IP address is assigned via DHCP if your ISP has DHCP enabled. Click Forward
- enable Internet connection sharing and select the NIC that is connectted to your LAN. Also select Enable DHCP for local Network (if you have it installed). Select DHCP server details adn select Create new DHCP configuration. Setup your DHPC server to whatever IP scheme you like.8419
- select Start firewall now, and click Save, then click quit.
There you go, your firewall router is now up and running. The only thing that is allowed through by default is port 80 from internal clients. You can goto your favorite port scanning website to test your external security like grc.com. If configured correctly no ports should be open on the Public netwrok unless you open them.
Tags: firewall, Linux
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