Privacy Enhanced Mail (PEM) was the ﬁrst serious eﬀort to secure Internet
mail. The Internet Resources Task Force (IRTF) Privacy and Security Research
Group (PSRG) did the initial design. The Internet Engineering Task Force (IETF)
PEM Working Group continued development for three years, resulting in a four-
part Proposed Internet Standard published in early 1993    . PEM
is a broad standard suite, it provides encryption, authentication, message integrity
and key management. PEM supports both symmetric and asymmetric (public-
key) key management schemes.
Default installations of almost any operating system are prime targets for hackers,
and Solaris is no exception.These installations are usually devoid of any vendor
patches, may be running system daemons with more privilege than necessary, and
are likely to use insecure protocols.This chapter is designed to get you to begin
thinking about Solaris in terms of security by examining the shortcomings of the
default Solaris installation, as well as the tools available for monitoring the system.
Most intrusions will result in your Solaris systems displaying uncharacteristic...
Encryption is the process of protecting data by using an algorithm to scramble it. The
data is unintelligible, undetectable, unreadable and irretrievable unless a key is used
to reverse the encryption, or decrypt, the data.
Encryption is used all the time, often without you even realising it. Whenever you buy
something online and make a transaction, all your details are heavily encrypted until
they reach the other end, making sure that no third party could be listening in.
Unauthorized access is when an unauthorized entity gains access to an asset and has the
possibility to tamper with that asset. Gaining access is usually the result of intercepting
some information in transit over an insecure channel or exploiting an inherent weakness in
a technology or a product.
Getting access to corporate network resources is usually accomplished by doing some
reconnaissance work. Most likely, the corporate network will be accessed through the
Internet, tapping into the physical wire, remote modem dial-in access, or wireless network
What does a typical BCS network look like? Most installations today have a dedicated
BCS network with centralized control via an operator’s terminal in the facility manager’s
office. There is no Internet (or LAN) connection, and thus no IT threat. However, the
trend today is toward greater connectivity to enable new services, convenience, and
savings on infrastructure costs. Newer buildings have network connections to the Inter-
net. But even so, most BCS networks still have few resources that are of value to the
Developing Secure Applications with Visual Basic first provides you with an understanding of encryption, and then guides you through adding security features to your own applications using the Microsoft CryptoAPI, and the new security features of Windows 2000. Developers who have been confused by the high-end, academic style of other encryption books and cryptography theory will delight with Chapman's understandable style and hands-on methods.
The Installation Process
Important - To install a Remote Access client on any version of Windows, you need Administrator permissions. Consult with your system administrator.
To install a Remote Access client:
1. Log in to Windows with a user name that has Administrator permissions.
2. Get the installation package from your system administrator, and double-click the installation package.
3. Follow the installation wizard.
Note - On Windows Vista and Windows 7, there may be a prompt to allow access, depending on the UAC settings....
Welcome to the fascinating world of open source software that is Linux.
In this book, I introduce you to the wonders of the Linux operating
system, originally created as a labor of love by Linus Torvalds in the early
1990s. My goal is to initiate you into the rapidly growing ranks of Linux users
and enthusiasts busily rewriting the rules for the operating system marketplace.
If you’ve contemplated switching to Linux but find the prospect too forbidding,
you can relax. If you can boil water or set your alarm clock, you, too, can
become a Linux user. (No kidding!)...
Linux Server Hacks is a collection of 100 industrial-strength hacks, providing tips and tools that solve practical problems for Linux system administrators. Every hack can be read in just a few minutes but will save hours of searching for the right answer. Some of the hacks are subtle, many of them are non-obvious, and all of them demonstrate the power and flexibility of a Linux system. You'll find hacks devoted to tuning the Linux kernel to make your system run more efficiently, as well as using CVS or RCS to track the revision to system files....
As one of the most popular open source content management systems available today, WordPress boasts a framework that allows you to easily customize and extend it through plugins. This comprehensive book shows you how plugins work, reviews the tools and APIs available in WordPress, and demonstrates how to extend the functionality of WordPress with plugins.
If your household harbors more than one computer, you’ve probably wondered about home networking. Maybe you’ve gone so far as to start setting up a network and given up in frustration. Well, now you can relax. Home Networking All-In-One Desk Reference For Dummies has come to the rescue!
A network will make your life easier, and Home Networking All-In-One Desk Reference For Dummies makes it easier to create one.
For security purposes, each PDF file is encrypted with a unique serial number associated with your
21certify Exams account information. In accordance with International Copyright Law, 21certify
Exams reserves the right to take legal action against you should we find copies of this PDF file has
been distributed to other parties.
With the 4GB Gridfire , you can back up, store, carry and offload large files with one affordable, convenient device. What’s more, means no moving parts, and therefore less chance of damage if the device is dropped. 2 The 2GB One-Tech is the best choice for high-performance results from your digital camera and other handheld devices. 3 The STM gives you the ability to carry your files AND your software on a secure USB drive, by using separate partitions to … 4 The Airlink connects your desktop PC to a network, using the latest advanced silicon chip technology....
One of the great things about PHP is its vibrant and active community. Developers
enjoy many online meeting points, including the SitePoint Forums,
velopers get together to help each other out with problems they face on a daily basis,
from the basics of how PHP works, to solving design problems like “How do I val
idate a form?”As a way to get help, these communities are excellent—they’re replete
with all sorts of vital fragments you’ll need to make your projects successful.
In our next sections together we will consider the Windows NT and Windows 2000 operating
systems. Windows NT was Microsoft’s first effort in building a production server operating system,
and they made a number of changes and improvements in Windows 2000. We are going to take a
quick look at the architecture and file system and then move into the tools that you can use to gather
clues from your operating system.
The Installation and Configuration Guide recommends saving and using the responses.properties file when
installing VMware vCloud Director on additional server hosts, placing it in a location accessible to all target
hosts. That recommendation is enhanced here with the requirement that the file only be made available to
authorized individuals. Appropriate access controls should be placed on the “location accessible to all target
hosts.” Any backups that are made should be carefully controlled and encrypted if your backup software
To start installing Outpost Network Security, run the setup.exe file. The installation procedure is
straightforward and similar to most Windows installers. Just follow the steps of the setup wizard
and it will install all the required components on your computer: Agnitum Command Center,
Client Configuration Editor, Agnitum Update Service, and Agnitum Publisher Service.
The setup wizard will prompt you for the license key as well as port numbers to be used by the
client computers to connect to the console.
Exercise Instructions — This section contains what it is you are to
accomplish. There are no definitive details on how to perform the
tasks. You are given the opportunity to work through the exercise
given what you learned in the unit presentation, utilizing the unit
Student Notebook, your past experience and maybe a little intuition.
Exercise Instructions With Hints — This section is an exact
duplicate of the Exercise Instructions section except that in addition,
specific details and/or hints are provided to help step you through the
Part of an overall Firewall strategy
Sits between the local network and the external network
Originally used primarily as a caching strategy to minimize outgoing URL requests and increase perceived browser performance
Primary mission is now to insure anonymity of internal users
Still used for caching of frequently requested files
Also used for content filtering
Acts as a go-between, submitting your requests to the external network
Requests are translated from your IP address to the Proxy’s IP address
E-mail addresses of internal users are removed from request headers
Cause an actual br...
The Need for Application Control
The wide adoption of social media and Web 2.0 applications changes the way people use the Internet. More than ever, businesses struggle to keep up with security challenges. The use of internet applications comes with problems that administrators must know about:
UserCheck CLI Malware threats - Application use can open networks to threats from malware. Popular applications like Twitter, Facebook, and YouTube can cause users to download viruses unintentionally. File sharing can easily cause malware to be downloaded into your network.