Making a Firewall in CentOs 6.3

First of all install centos 6.3 after install webmin module....

If you are using the RPM version of Webmin, first download the file from the downloads page , or run the command :wget http://prdownloads.sourceforge.net/webadmin/webmin-1.630-1.noarch.rpmand then run the command :rpm -U webmin-1.630-1.noarch.rpmThe rest of the install will be done automatically to the directory /usr/libexec/webmin, the administration username set to root and the password to your current root password. You should now be able to login to Webmin at the URL http://localhost:10000/. Or if accessing it remotely, replace localhost with your system's IP address.

If you want to connect from a remote server and your system has a firewall installed, seethis page for instructions on how to open up port 10000.

CentOS 6.3 Installation Guide

CentOS 6.3 Step by Step Graphical Installation Guide

Boot Computer with CentOS 6.3 OS Installation CD/DVD.

1. Select Install or Upgrade existing system options.

Select Install or Upgrade

2. Choose skip media test as it may take long time to check media.

Skip CentOS 6.3 Media Test

3. CentOS 6.3 Welcome Screen press Next.

CentOS 6.3 Welcome Screen

4. Language Selection.

CentOS 6.3 Language Selection

5. Select appropriate Keyboard.

CentOS 6.3 Keyboard Selection

6. Select Basic Storage Device if your hard drive is attached locally.

CentOS 6.3 Storage Device Selection

7. You may get Storage Device warning, you can click Yes, discard any data button toContinue.

CentOS 6.3 Storage Device Warning

8. Give a Hostname to the server and click on Configure Network button if you want to configure network while installation.

CentOS 6.3 Hostname and Network Setup

9. Click Wired tab and click on Add button.

CentOS 6.3 Network Setup

10. Select Connect Automatically, go to ipv4 settings tab and select Method and selectManual in drop down. Click on Add tab to fill address box with IP Address, Netmask,Gateway and DNS Server. Here I’m using IP Address 192.168.1.6 and DNS Server is 4.2.2.2 for demo. This IP Address may vary in your environment.

CentOS 6.3 Network Configuration

11. Select Time Zone.

CentOS 6.3 Set Timezone

12. Give a root password.

CentOS 6.3 root Password

13. Select appropriate partitioning as per your requirement.

CentOS 6.3 Partition Selection

14. Verify filesystem. Here, you can edit filesystem If you want.

CentOS 6.3 Partition Verify

15. Disk Format Warning, click on Format.

CentOS 6.3 Disk Format

16. Select Write Changes to disk.

CentOS 6.3 Disk Changes

17. Hard Drive is Formatting.

CentOS 6.3 Disk Formatting

18. Here, you can give Boot loader Password for better security.

CentOS 6.3 Boot Loader Password

19. Select the applications you want to install, you can choose Customize now and click Next.

CentOS 6.3 Package Selection

20. Select the applications you want to install and click Next.

CentOS 6.3 Packages Selection

21. Installation started, this may take several minutes as per selection of packages.

CentOS 6.3 Installation

22. Installation completed, Please remove CD/DVD and reboot system.

CentOS 6.3 Installation Completes

23. Welcome to CentOS 6.3 Login Screen.

CentOS 6.3 Login Screen

24. CentOS 6.3 Desktop Screen.

CentOS 6.3 Desktop Screen

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