Hello again.. I am Romeo64 and it's my 3rd post...Recently I have
been examining that many aspiring hacker newbies are recklessly excited
about hacking but most of them lack basic fundamentals of networking
which are essential to become a MASTER HACKER . .ALRIGHT LET'S BEGIN. ....
Simple
enough it is basically refered as breaking of a large network WAN into
small networks also called subnetworks or simply subnet. ....
You might be wondering about the reason for subnetting right ?? Here is the reason===*
The
information/packet requested by you might come in your WAN but it would
get easily lost in the traffic...if it doesn't know in which part or
subnet of the whole network your system resides...
When the packets comes to the router of your LAN the Subnet mask helps the router to know Wether the packets belong to your LAN OR NOT...
PORT :
Simple
again a port can be understood by considering the following situation.
....Consider a huge building with different types of services A,B,C,DO.
for instance. ..the whole building has same physical address
Alright now consider the physical address as IP address but the port takes us to the correct service in the building. ...
there
are 65536 ports available presently out of which some are private ports
while others are responsible for providing common services like SMTP
FTP HTTP SSH..etc
PROXY SERVERS AND PROXYCHAINS :
Huh!!..take
it easy ...nothing tough basically proxy servers allows different users
to access information. ..and surf Internet through them...as your
request is fulfilled through them your IP address is hidden what we
commonly call. GETTING ANONYMOUS ..(hmm!! Still awake?? :) )
We can use more than one proxy servers in a row this is referred as proxy chain this makes you Anonymity more STRONGER ... pretty cool huh !!!
What next...
DHCP / DOMAIN HOST CONFIGURE PROTOCOL :
Easy...
The IPV4 version which is being used currently does not have enough IP
addresses to meet all requirements... As the users of Internet are
increasing with a huge rate. Thus to solve this problem the IP addresses
were divided into two categories Static IP and dynamic IP *
each
time we access the Internet the DHCP of over ISP assigns us a dynamic IP
address to to provide us unique identity in our LAN...
NAT OR NETWORK ADDRESS TRANSLATION :
Continue.... Once we are assigned a dynamic IP by DHCP we have a unique identity in our LAN you got it only our LAN
thus we cannot use this IP to surf the Internet... This is where NAT
strikes in... Our router behaves as a NAT and has a static non varying
IP address thus whenever we request any stuff from the internet our
request first goes to the NAT ( our router) which fulfills our request
and sends us our requested data packets from the internet... Feeling Bored.... Have a look at this :
SIP OR SESSION INITIATION PROTOCOL :
Ever wondered how Skype, MSN and stuff like video conference.. Works??.. Here is the ANSWER SIP....Let's see how it works.... Lock &Load SIP initiates VOIP (voice over Internet protocol) sessions.
In
this the information source i. e. Your voice. Video text etc..is
converted into network packets to travel over Internet to its
destination
AS YOUR MESSAGE TRAVELLS OVER INTERNET, ITS ABSOLUTELY FREE now that's pretty cool huh??!!
hey.. There are numerous small things which happen behind the scenes
when you Skype someone or use an instant messaging service... which I am
leaving here as they are beyond the scope of this post.....
Keep coming back the path is a long one....GOOD LUCK
1 Comments
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