How to install Firefox 15 on Linux Redhat, Ubuntu, Debian, CentOS, Fedora or any other Linux distribution.

This howto explains how to install Firefox 15 on Linux, with or without replacing an existing Firefox installation.

1. Download

Download the release from the official channels page:
www.mozilla.com/firefox/channels/
A 64 bit build is also available in the x86_64 directory of Mozilla's FTP.

This how-to supposes that the downloaded file is saved in the “Downloads” directory situated in your home directory.

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Securing Remote Logins with OpenSSH Server

OpenSSH is the open source version of SSH, or Secure Shell. Connectivity tools such as Telnet and FTP are well-known, but they send data in plain text format, which can be intercepted by someone using another system on the same network, including the Internet. On the other hand, all data transferred using OpenSSH tools is encrypted, making it inherently more secure. The OpenSSH suite of tools includes ssh for securely logging in to a remote system and executing remote commands, scp for encrypting files while transferring them to a remote system, and sftp for secure FTP transfers. OpenSSH uses a server-client relationship. The system being connected to is referred to as the server. The system requesting the connection is referred to as the client. A system can be both an SSH server and a client. OpenSSH also has the added benefits of X11 forwarding and port forwarding. X11 forwarding, if enabled on both the server and client, allows users to display a graphical application from the system they are logged in to on the system they are logged in from. Port forwarding allows a connection request to be sent to one server but be forwarded to another server that actually accepts the request. This section discusses how to use OpenSSH, both from the server-side and the client-side.

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Configuration of Apache HTTP server

Creating a Web Server with the Apache HTTP Server

Apache Configuration step by step click here

When you view a web page over the Internet, the code to create that page must be retrieved from a server somewhere on the Internet. The server that sends your web browser the code to display a web page is called a web server. There are countless web servers all over the Internet serving countless websites to people all over the world. A web server can also be set up on an internal network so that it is only accessible by the computers inside the private network. If this internal network is inside a company or corporation, it is often called an intranet. Whether you need a web server to host a website on the Internet or to host a company portal inside its internal network, a Red Hat Eterprise Linux server can function as a web server using the Apache HTTP server. The Apache HTTP server is a popular, open source server application that runs on many UNIX-based systems as well as Microsoft Windows. This section explains how to get a web server up and running on Red Hat Enterprise Linux.

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Granting Network Connectivity with DHCP Server

DHCP, or Dynamic Host Configuration Protocol, allows an administrator to configure network settings for all clients on a central server. The DHCP clients request an IP address and other network settings from the DHCP server on the network. The DHCP server in turn leases the client an IP address within a given range or leases the client an IP address based on the MAC address of the client’s network interface card (NIC). If an IP address is assigned according to the MAC address of the client’s NIC, the same IP address can be leased to the client every time the client requests one.

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Samba configuration Step by Step Part-3

Connecting Samba Clients and Users

Now that all your Samba shares are set up, you can access them from one of the client systems (Client02). Be aware that you need to install the client Samba packages before you can connect to any Samba shares.

Step 1. Install the client packages:

# yum install -y samba-client samba-common

Step 2. Verify that the install was successful:

# rpm -qa | grep samba

samba-client-3.5.4-68.el6.x86_64

samba-winbind-clients-3.5.4-68.el6.x86_64

samba-common-3.5.4-68.el6.x86_64

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Samba configuration Step by Step Part-2

Samba the Use SELinux and Firewall Configuration

If you are accustomed to Windows systems, you should already know what ports you need to open on the firewall.

Step 1. Use the iptables command to create your firewall rules:

# iptables -I INPUT 5 -p tcp -m tcp --dport 137 -j ACCEPT

# iptables -I INPUT 5 -p udp -m udp --dport 138 -j ACCEPT

# iptables -I INPUT 5 -p udp -m udp --dport 139 -j ACCEPT

# iptables -I INPUT 5 -p tcp -m tcp --dport 445 -j ACCEPT

Step 2. Save the rules you just created:

# service iptables save

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Samba configuration Step by Step Part-1

Samba

Samba, which uses the CIFS/SMB protocol, is commonly brought up when you want Linux and Windows machines to be able to share files together. Aside from the file sharing uses, Samba also has some built-in functionality to run as a member server on a Windows domain, print server, or file server. Let’s get started with the setup.

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