What is Sniffing and Sniffers ?

Sniffing is called as capture data packets
over a particluar Newtork. The programs
used for sniffing are called sniffers.
Now lets understand what is Sniffing in
simple words. Example Now think that your
home has a wifi connection allright. Now
you are using home wifi, now your sister
also using same wifi connection because it is
home wifi and you and your sister know its
password so you both easily can get access
to the wifi network. Now you want to hack
your sisters fb account. Now what can you
do ? well you can set up a program named
as sniffer. Ok now using that program on
your computer and open it. Once it start
working, it will start capture packets() before starting sniffer make sure you
use https striper. Now wait till she login into
her fb account, then you can easily find her
password as plaintext in packets, it will not
be encrypted because we are using http
header. Not https header or ssl(secure
socket layer) . (). Now you got
what is SNIFFING PACKETS OR ATTACKS.
So basicly sniffers can be setup between you
and your server.