Hack Attacks Revealed

Hack Attacks Revealed

Take a technogothic journey inside the world of a hacker as seen by security expert John Chirillo. Drawing on his own experience as a hacking consultant for Fortune 1000 companies, Chirillo shows how hackers can exploit network security holes and how you can recognize an oncoming threat to your security. The book features details of the powerful Tiger Box® system, used by hackers to penetrate vulnerable networks, and teaches you how to use that same tool to your advantage.

In this highly provocative work, you’ll discover:

• The hacker’s perspective on networking protocols and communication technologies

• A complete hacker’s technology handbook, illustrating techniques used by hackers, crackers, phreaks, and cyberpunks

• Information discovery and scanning tools for hacking into known and unknown ports and service vulnerabilities

• Detailed instructions for customizing the Tiger Box for your needs and using it to search hack attacks
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Hacker's Challenge

Hacker's Challenge

Hacker's Challenge : Test Your Incident Response Skills Using 20 Scenarios by Mike Schiffman (Conductor)
Publisher: McGraw-Hill Osborne Media (October 1, 2001) | ISBN-10: 0072193840 | PDF | 19,3 Mb | 300 pages

Mike Schiffman has hit upon a great formula for Hacker's Challenge. Rather than try to research, fully understand, and adequately explain attacks that have taken place on other people's networks--the approach taken by too many writers of books about computer security--Schiffman lets network administrators and security experts tell their stories first-hand. This is good. What's better is that Schiffman has edited each of their war stories into two sections: one that presents the observations the sysadmin or security consultant made at the time of the attack, and another (in a separate part of the book) that ties the clues together and explains exactly what was going on. The challenge in the title is for you to figure out what the bad guys were doing--and how best to stop them--before looking at the printed solution. Let's call this book what it is: an book for people with an interest in network security.

It doesn't really matter, from a value-for-money standpoint, whether your skills are up to the challenge or not. The accounts of intrusions--these are no-kidding, real-life attacks that you can probably learn from, by the way--are written like chapters from a novel (though log file listings, network diagrams, and performance graphs appear alongside the narrative text). Recall every time you've seen a movie or read a book with computer scenes so technically inaccurate they made you wish for a writer with a clue. Schiffman and Hacker's Challenge is what you wished for. --David Wall
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Installing a VPN client in Windows XP

Installing a VPN client in Windows XP

Installing a VPN client in Windows XP
To let a client connect to your VPN server, you need to define all the connection settings (server address, protocols to be used, etc.) The new connection wizard available from the Network connections icon in the control panel enables this configuration:


Then click Next:

Out of the three choices offered in the window, select "Connect to the network at my workplace":

On the next screen select "Virtual private network connection":

Then enter a name that best describes the name of the virtual private network you want to connect to:

The next screen lets you determine whether a connection needs to be established before connecting to the virtual private network. Most of the time (if you are on a permanent connection or ADSL or cable access), it will not be necessary to establish the connection since the computer is already connected to the Internet; if this is not the case select the connection to be established from the list:

To access the remote access server (VPN server or host), you must specify its address (IP address or host name). If it does not have an IP address, you will need to equip it with a dynamic naming system (DynDNS) capable of assigning it a domain name and specify this name in the following field:

Once you have finished defining the VPN connection, a connection window opens asking you for a login and password:

Before connecting, you need to define some settings by clicking the Properties button at the bottom of the window. A window featuring a certain number of tabs then lets you more narrowly configure the connection. In the Network management tab, select the PPTP protocol from the scrollable list; select the (TCP/IP) Internet protocol and click Properties:

The window that appears lets you define the IP address the client machine will have when connecting to the remote access server. This lets you have addressing that is consistent with the remote addressing. As such, the VPN server is capable of acting as a DHCP server, that is, of automatically providing the VPN client with a valid address. To do so, simply select the "Obtain an address automatically" option:

In the event that the client uses the DHCP, if the server assigns an internal IP address, the client will be connected to the workplace network and will benefit from its services but will no longer have Internet access via the interface used since the IP address is not routable. In order to let the client be connected to the VPN and still have Internet access via this connection, the VPN server must be configured such that it shares its connection! The Advanced button lets the client use the VPN server's gateway in the event that the latter shares it connection:

To be able to set up the VPN connection, intermediary firewalls, and particularly XP's native firewall, need to be configured to let the connection be established. You therefore need to disable Windows XP's native firewall by doing the following:
1. In the control panel click Network connections,
2. Right-click the connection you use,
3. Select the Advanced settings tab,
4. Make sure the Internet connection firewall option is disabled.

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