Chapter 32 - Security in the internet: IPSec, SSL/TLS, PGP, VPN, and Firewalls. Chapter 32 briefly discusses the applications of topics discussed in chapters 30 and 31 to the Internet model. We show how network security and cryptography can be used in three upper layers of the Internet model.
Chapter 14 - Network security: Firewalls and VPNs. In this chapter, we look at four issues of security: privacy, authentication, integrity, and nonrepudiation. We show how the first can be achieved through secret-key or private-key encryption. We discuss a concept called digital signature that satisfies the three other conditions. We talk about how security is implemented in the Internet.
Identifying an agile and adaptable acquisition process that can field new information technology capabilities and services in relatively short and responsive time frames is a pressing issue for the U.S. Navy. Damaging malware can mutate within hours or days, requiring a defense that is sufficiently
he security of networked computers is all about making sure that the
right people have access to the right information, and that they get it intact
without anyone listening in as the information is transmitted. To accomplish
those goals, you have to be sure that people are who they claim to be. You
also have to have a way of dealing with security breaches while—and after—
they occur, so you can figure out what is (or was) going wrong in order to
correct the problem. The difference between security on a local area network
(LAN) and security on the Internet is largely one of scale.
This document contains possible recommended settings for the system
Registry. You can severely impair or disable a Windows NT System with
incorrect changes or accidental deletions when using a Registry editor
(Regedt32.exe or Regedit.exe) to change the system configuration. Currently,
there is no “undo” command for deletions within the Registry. Registry editor
prompts you to confirm the deletions if “Confirm on Delete” is selected from the
options menu. When you delete a key, the message does not include the name
of the key you are deleting.
ADC LSA-PLUS® connection systems include connection, disconnection and
switching modules for eight or ten pairs, all featuring the patented LSA-PLUS
interconnection displacement connection (IDC) technology.
LSA-PLUS connection systems support connection, line splitting, switching
and earthing of connections in telecommunication and data networks. The
contact is resistant to climatic and other environmental problems. Technical
contact security results in the formation of a gas-tight connection with very
low transmission resistance.
This module provides students with the necessary knowledge and skills to
implement security in a Microsoft® Windows® 2000 network by using security
policies and auditing and by recovering encrypted files.
In the lab in this module, students will have a chance to create a customized
Microsoft Management Console (MMC) console for configuring security
settings and creating a new security template. Then they will analyze and
configure the security settings for a computer.
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.
In this chapter, students will be able to understand: How e-commerce benefits consumers and businesses? To compare ways of doing business on the Web? To identify elements of a successful e-commerce Web site? To evaluate privacy and security on the Internet?
Security in the virtual world of the Internet is even more confusing
than in the real world we inhabit. Buzzwords and marketing hype only
serve to add to the puzzle.Vendors and free products abound, but
according to the experts, the Internet world is becoming more dangerous
every day. How can that be? How can all these solutions from so
many directions not solve even the basic problems?
The answer is not simple because the problems are so complex.
Security is difficult to create and maintain. Security is messy.
In an age when our society relies so heavily on electronic communication, the need
for information security is imperative. Given the value and confidential nature of the
information that exists on today’s networks, CIOs are finding that an investment in
security is not only extremely beneficial but also absolutely necessary. Corporations
are realizing the need to create and enforce an information security policy.
"Network and system security" provides focused coverage of network and system security technologies. It explores practical solutions to a wide range of network and systems security issues. Chapters are authored by leading experts in the field and address the immediate and long-term challenges in the authors’ respective areas of expertise. Coverage includes building a secure organization, cryptography, system intrusion, UNIX and Linux security, Internet security, intranet security, LAN security; wireless network security, cellular network security, RFID security, and more.
A Brief History of Security
“Well, I never heard it before,” said the Mock Turtle, “but it sounds uncommon
—Lewis Carroll, Alice in Wonderland.
Secret communication achieved by hiding the existence of a message is known as
steganography. The word is derived from the Greek word “steganos,” meaning cov-
ered and “graphin” meaning to write.
Several other mail transfer agents are available to replace sendmail. Two popular aternatives are Qmail
(www.qmail.org) by David Bernstein, and Postfix (www.postfix.org) by Wietse Venema. Both of these MTAs
were designed and written from the ground up with security and performance in mind. It is beyond the scope
of this guide to give details on installing and configuring either of these alternatives, but a wealth of information
is available on the Internet.
The current explosion of the stock market is unprecedented by any period in its history. Since
the 1980s, the number of American households that own common stock has risen from
below 20 percent to just under half. And, this does not include households that hold stock
within their retirement plans or other indirect means. A significant portion of this growth is a
direct result of the proliferation of information available to the public through such new forums
as the Internet. Any information without explanation, however, is useless....
When the print edition became out-of-print, we applied for the return of copyright and released the book in this
electronic format. We removed the more dated material, such as boxed insert examples of the use of the Internet,
but otherwise essentially left the book as is because we believe the fundamental ideas are still relevant.
We seek the support of the adopting community to refresh this book. If you have some suggestions for revision,
then please contact the chapter editor.
Abstract: The purpose of this white paper is to present discussion and findings that conclude
that Cisco MPLS-based VPNs are as secure as their layer 2 counterparts such as Frame-
Relay and ATM. This document details a series of tests were carried out on a Cisco router test
bed validating that MPLS based VPNs (MPLS-VPN) provide the same security as Frame-Relay
ATM and Frame-Relay have a reputation in the industry as being secure foundations for
enterprise connectivity. Essential items that make ATM and Frame-Relay a secure network
were considered and tested on an MPLS-VPN.