How Can We Hack
Before start to learn How Can We Hack or Hacking you must have the deep knowledge of hacking means from most basic.
Whenever term hacker comes before many people consider it as a guy sitting inside a room or garage with a bottle or beer and a Laptop or Desktop doing wonders on click of buttons. But the reality check is hacking is not that easy as portrayed in movies and television and term hacker doesn’t mean a computer criminal. Continue reading How Can We Hack ??
As many of newbies asking this quetion so for all these people who are new at this whole Scenerio and do not really understand what hacking is all about and where to begin, I offer up these links to some great places to start learning.
Podcasts: http://www.grc.com/SecurityNow.htm <– This is fantastic for people who are new to the field. If you have the time or motivation, go back and listen to them from day 1, they assume you know very little if anything and hit on all of the major topics in the security field. Fantastic show.
One of my reader ask me about Ethical courses so i try to put little info about top 5 ethical hacking course.And its also a first module on How To Learn Ethical Hacking
CEH (Certified Ethical Hacker)
The Certified Ethcial Hacker is a professional certification provided by EC-Concil. EC-council is world’s largest computer security certification provider organisation.A Certified Ethical Hacker has obtained a certification in how to look for the vulnerabilities in the target systems and uses the same knowledge and tools.
A Starting Salary of a Certified Ethical Hacker according to Payscale is around $75000 USD
CHFI (Computer Hacking Forensic Investigator)
The Certified Hacking Forensic Investigator is a professional certification provided again by EC-COUNCIL. This certification is designed to look at network security in its investigation phase, detecting attacks and properly extracting evidence to report the crime adn conduct to prevent future attacks.
A Starting Salary of a Certified CHFI according to Payscale is around $85000 USD
ECSA ( EC-Council Certified Security Analyst)
ECSA is a professional certification provided by EC-Council. The ECSA Certification is a complementary certification to EC-COuncil’s CEH certification by exploring the analytical phase of ethical hacking.
A Starting Salary of a ECSA according to Payscale is around $75000 USD
CISA (Certified Information System Auditor)
CISA is a professional certification for information technology audit professionals sponsored by the Information System and Control Association. Candidates for the certification must meet requirements set by ISACA.
A Starting Salary of a CISA according to Payscale is around $84000 USD
CISSP (Certified Information Systems Security Professional)
CISSP is an independent information security certification governed by not-for-profit. CISSP was the first information security credential accredited by ANSI ISO/IEC Standard 17024:2004 accreditation. It is formally approved by U.S. Department of Defense in both their Information Assurance Technical and Managerial Categories.
A Starting Salary of a CISSP according to Payscale is around $1,29,829 USD
In this post i am gonna tell you, about how IT infrastructure is organized in Multinational software companies.This post can also be used as a reference for non software companies also.With technology infrastructure i mean how various people are connected with each other , how mails and other message applications are organized .We are not going into details of development infrastructure.We are only going into details of the underlying support infrastructure.
So what are the requirements of IT infrastructure ?
First of all IT infrastructure should connect each and every person of the company irrespective of office location.
IT infrastructure should also connect each and every department of the company with each employee of the company irrespective of office location.
The communication should be fast .The communication should not be delayed.
The communication channel should be broad . If one person wants to share a file with other person , proper channel must be there .
It should be secure .
Various infrastructure channels and tools must be accessed at a click of a mouse.
Various software and hardware tools which are used to implement this IT infrastructure.
Lets start with core of IT infrastructure .The core consists of intranet.
Suppose my company is located in different locations across the world.Each of this location can contain one or more offices. The systems in these offices are connected to each other . The offices in one location are connected to each other
likewise all offices in all other locations are connected .These locations which may spread across the world are also interconnected.This forms the intranet of a company.
Basic intranet is comprised of hardware and software .Hardware includes cable , servers , routers and various other equipments . Software comprises of servers like unix or windows server and some other tools which are basically hidden from the end employee.
But this is the core and nothing to do with most of employees except IT department which handles and maintain these resources.
Applications for IT infrastructure
Most important application in IT infrastructure is email.Every company maintains it email policy .Each employee of the company is given a company email id like firstname.lastname@example.org.
Now the email technology is privately employed by company.For example a company may choose to microsoft platform to implement their email infrastructure .Example of software are microsoft exchange sever and microsoft outlook.
Besides email company maintains a chat type software known as office communicator . This software can be used to communicate with any employee of the company. Besides chatting this software can be used to share files , share screens ,allowing remote control etc .One such example of this tool is Microsoft lync.
Next for security purposes , a desktop and server monitoring tool is also installed in each and every system.This tool maintains logs of system usage.
Another thing is that each and every employee has an employee id . This id is synchronized with your company email id.
You can use this id to login into your system and other software tools.
Another important hardware which is connected to company intranet is voice over ip phone .Most of the employees are provided with ip phone .
Another software tool is support system .This software is maintained at company intranet .Whenever you need help or resource with any department of company raise a call (known as ticket ) on this application,Your query will be solved in 24 hrs max by the concerned department employee.From hairpin to airplane ticket anything can be availed with this system.
Now suppose you are not in any company office and want to access your mails or in short company intranet.How will you do that ? You can use internet to connect to your company intranet with vpn.
SAP tools are used to maintain employee information like his salary and other information.
Remember intranet is protected by very powerful firewalls and everything is logged .
So this forms the brief view of technology infrastructure of most companies.
Welcome back in section of How to bye pass firewall. Earlier we discuss about Identification of Firewall in post How to bye pass Firewall. In this post we discuss about tools to bye pass the firewall and study about Its technique.
One of the easiest and most common ways for an attacker to slip by a firewall is by installing network software on an internal system, which communicates by using a port address permitted by the firewall’s configuration
A popular port is TCP port 80, which is normally used by web server
Many firewalls permit traffic using port 80 by default
Byepassing a firewall using HTTP Tunnel
Httptunnel creates a bi-directional virtual data path tunneled in HTTP requests. The requests can be sent via an HTTP proxy, if desired.
Placing Backdoors through Firewall
The Reverse WWW Shell
This backdoor should work through any firewall that allows users to surf the WWW. A program is run on the internal host, which produces a child everyday at a special time.
For the firewall, this child acts like a user; using the browser client to surf the Internet. In reality, this child executes a local shell, and connects to the WWW server operated by the hacker via a legitimate-looking http request, and sends a stand-by signal
The legitimate-looking answer of the WWW server operated by the hacker is, in reality, the command the child will execute on its machine in the local shell.
Hiding behind a Covert channel : Loki
LOKI is an information tunneling program.
LOKI uses Internet Control Message Protocol (ICMP) echo response packets to carry its payload. ICMP echo response packets are normally received by the Ping program, and many firewalls permit the responses to pass
Simple shell commands are used to tunnel inside ICMP_ECHO/ICMP_ECHOREPLY and DNS name lookup query/reply traffic. To the network protocol analyzer, this traffic seems like ordinary packets of the corresponding protocol. However, to the correct listener ( the LOKI2 daemon), the packets are recognized for what they really are.
Tools to Bye Pass Firewall
007 Shell is a covert shell ICMP tunneling program. It works similar to LOKI. 007 Shell works by putting data streams in the ICMP message past the usual 4-bytes (8-bit type, 8-bit code, and 16-bit checksum)
ICMP Shell (ISH) is a telnet-like protocol. It provides the capability of connecting a remote host to an open shell, using only ICMP for input and output The ISH server runs as a daemon on the server side. When the
server receives a request from the client, it will strip the header and look at the ID field. If it matches the server’s ID, then it will pipe the data to “/bin/sh.” It will then read the results from the pipe and send them back to
the client, where the client then prints the data to stdout.
A free circumvent software available online, perhaps powerful enough to bypass any industry level firewall at its default configuration.It enables users to browse any website freely just the same as using the regular browser while it automatically searches the highest speed proxy servers in the background.
AckCmd is a client/server combination for Windows 2000 that opens a remote command prompt to another system (running the server part of AckCmd). It communicates using only TCP ACK segments. This way the client component is able to directly contact the server component through the firewall.
Tor is a system intended to enable online anonymity, composed of client software and a network of servers which can hide information about users’ locations. Tor provides perfect anonymity it makes it more difficult to trace internet traffic to the user, including visits to Web sites, online posts, instant messages, and other communication forms.
This post will familiarize you with Firewall , bypass the firewall and tools to bye pass it.
WHAT IS FIRE WALL?
A hardware device and/or software program which sits between the Internet and the intranet, internet, of an organization
It restricts information that comes to your computer from other computers, giving you more control over the data on your computer and providing a line of defense against people or programs that try to connect to your computer without invitation.
In fact, that’s why its called a firewall. Its job is similar to a physical firewall that keeps a fire from spreading from one area to the next.
Its main objectives are to filter:
what should come in the intranet (inbound traffic) and
what should come out of the intranet (outbound traffic).
TYPES OF FIREWALL
Packet Filtering Firewall : They are usually part of a router and each packet is compared to a set of criteria before it is forwarded, dropped, or a message is sent to the originator.
Circuit level Gateway : they monitor TCP handshaking between packets to determine whether a requested session is legitimate. Information passed to remote computer through a circuit level gateway appears to have originated from the gateway. On the other hand, they do not filter individual packets.
Application level gateways : also called proxies, are application specific. An application level gateway that is configured to be a web proxy will not allow any ftp, gopher, telnet or other traffic through. They offer a high level of security, but have a significant impact on network performance.
Stateful Multilayer Firewalls : combine aspects of the other three types of firewalls. They filter packets at the network layer and evaluate contents of packets at the application layer. They allow direct connection between client and host, and they rely on algorithms to recognize and process application layer data instead of running application specific proxies.
Firewall defense your network using one of two access denial methodologies:
may allow all traffic through unless it meets certain criteria, or
may deny all traffic unless it meets certain criteria
And Criteria to be configured for firewall
So these are four criteria on which your network should be defensed by Anti virus. The next post will be on How to bye pass Firewall