ipcalc on backtrack 5

ipcalc

Introduction

• ipcalc provides a simple way to calculate IP information for a host. 
• The various options specify what information ipcalc should display on standard out. 
• Multiple options may be specified. An IP address to operate on must always be specified.
• Most operations also require a netmask or a CIDR prefix as well.

How To Open " ipcalc "

• To open ipcalc ,follow the path - 
• BackTrack > Miscellaneous > Miscellaneous Network > ipcalc 
• See the below image for more details -

• When you click on ipcalc , it look like this ( as shown below )

Options

-c, --check

Validate the IP address under the specified family. If no address family is specified, IPv4 is assumed.

-4, --ipv4

Specify IPv4 address family (default).

-6, --ipv6

Specify IPv6 address family.

-b, --broadcast

Display the broadcast address for the given IP address and netmask.

-h, --hostname

Display the hostname for the given IP address.

-m, --netmask

Calculate the netmask for the given IP address. It assumes that the IP address is in a complete class A, B, or C network. Many networks do not use the default netmasks, in which case an inappropriate value will be returned.

-p, --prefix

Show the prefix for the given mask/IP address.

-n, --network

Display the network address for the given IP address and netmask.

-s, --silent

Don't ever display error messages.

EXAMPLE 1 

• Here -c options is used to validate the IP address under the specified family or not .
• Command Used : 

1. ipcalc -c 10.0.0.1
2. ipcalc -c 128.129.130.245
3. ipcalc -c 192.168.232.128

See the below image for more help - 

EXAMPLE 2 

• Command Used : ipcalc 192.168.232.128/24
• See the below image for more details - 

EXAMPLE 3 

• Command Used : ipcalc 192.168.232.128/255.255.255.0
• See the below image for more help - 

This is how we can use this tool named  " ipcalc "

More example will be added soon .