Finding and configuring IP address in Linux

[NetWorkInG]

Hello sir,

I was using windows for a long time but I am recruited somewhere and all are the things are done on the linux server.Some basic things I need to know about the operating system behavior.

I would like to know that How to find the IP address and through this IP Address,How can I connect to this system using another system in the network. If you have any idea to configuration and more stuff regarding same then please elaborate it.

Thanks.

[Devasis]

The Linux is one of the powerful open sources operating system and the networking section of this operating system is also a hard bit secure connection.

You can get the IP Address from the Linux operating terminals.There are some basic commands through which you can get more description about the networking section of the Linux.

The simple command will explore the network settings of the Linux operating system.Use this command to get the IP address -

#ifconfig

[Solomon]

After getting the IP address from the terminal of Linux,you can connect with this system from other system.Through this way,you also can connect with other system using those IP addresses.

The SSH command would be used to connect with another system on the network.The command should be issued with the required IP address of the another system to which you need to be connect.

The SSH command would be used as follows -

#SSH <IP address >

The command should be issued only by the Root user on the system.

[MrChris-]

Changing Your IP Address

The Linux provides the way to change your IP address but in this case you need to configure the eth0 settings.You can assign the new IP address to this device and the IP address would be changed .

[root@Chris tmp]# ifconfig eth0 10.0.0.1 netmask 255.255.255.0 up

Using this command,a new IP would be assigned to the eth0 and would be activated because the command contains an option UP.

[Calvin K]

IP aliasing is the good and compatible method to generating more than one IP addresses using a single Network Interface Card.

Aliases follow the name format as parent-interface-name:X, where X is the sub-interface number according to your selection.The procedure for generating an IP alias is closely related to outlined for the real interface.

The command can help you to create multiple IP using one NIC -

# ifconfig wlan0:0 192.168.1.99 netmsk 2a55.255.255.0

[Lillebror]

There are two commands in the Linux which are being used to activate and shut down the NIC which is named as eth0 or eth1 depends on your connected NIC.

If you have installed only one NIC in your system then you can use that as eth0 which specifies that you are using only one NIC.

The command to activate and shut down the NIC would be as follows -

# ifdown eth0    /// For shutting down NIC 
# ifup eth0        /// For activating NIC