windows xp 5minute fix

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windows xp 5minute fix

Windows XP remains the most-used operating system, and home or small business users who don’t have an IT department to call need easy answers to common problems
* The Geeks On Call technicians fix thousands of Windows XP problems every month, providing support to customers in over thirty states
* Arranged in question-and-answer format, this book presents solutions to issues Windows users face every day, such as password problems, security, data back-up, Internet issues, difficulties with multimedia, boosting power, and making Windows XP more convenient
* Offers the fastest, easiest solution first, then delves deeper into certain problems to provide a long-range fix
* From their experience as an on-call computer support service, Geeks On Call has an authoritative, verified list of the most common problems reported by nearly 100,000 users, so this book addresses real issues consumers confront

Rapidshare Link:
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Practical Internet Security

Practical Internet Security




John R. Vacca "Practical Internet Security"
Publisher: Springer | Number Of Pages: 536 | 1.45 MB | PDF | 2006-10-18 | ISBN: 038740533X
As organizations today are linking their systems across enterprise-wide networks and VPNs as well as increasing their exposure to customers, competitors, browsers and hackers on the Internet, it becomes increasingly imperative for Web professionals to be trained in techniques for effectively protecting their sites from internal and external threats. Each connection magnifies the vulnerability to attack. With the increased connectivity to the Internet and the wide availability of automated cracking tools, organizations can no longer simply rely on operating system security to protect their valuable corporate data. Furthermore, the exploding use of Web technologies for corporate intranets and Internet sites has escalated security risks to corporate data and information systems.

Practical Internet Security reveals how the Internet is paving the way for secure communications within organizations and on the public Internet. This book provides the fundamental knowledge needed to analyze risks to a system and to implement a security policy that protects information assets from potential intrusion, damage, or theft. It provides dozens of real-life scenarios and examples, as well as hands-on instruction in securing Web communications and sites. You will learn the common vulnerabilities of Web sites; as well as, how to carry out secure communications across unsecured networks. All system administrators and IT security managers will find this book an essential practical resource.



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Practical Internet Security

Practical Internet Security




John R. Vacca "Practical Internet Security"
Publisher: Springer | Number Of Pages: 536 | 1.45 MB | PDF | 2006-10-18 | ISBN: 038740533X
As organizations today are linking their systems across enterprise-wide networks and VPNs as well as increasing their exposure to customers, competitors, browsers and hackers on the Internet, it becomes increasingly imperative for Web professionals to be trained in techniques for effectively protecting their sites from internal and external threats. Each connection magnifies the vulnerability to attack. With the increased connectivity to the Internet and the wide availability of automated cracking tools, organizations can no longer simply rely on operating system security to protect their valuable corporate data. Furthermore, the exploding use of Web technologies for corporate intranets and Internet sites has escalated security risks to corporate data and information systems.

Practical Internet Security reveals how the Internet is paving the way for secure communications within organizations and on the public Internet. This book provides the fundamental knowledge needed to analyze risks to a system and to implement a security policy that protects information assets from potential intrusion, damage, or theft. It provides dozens of real-life scenarios and examples, as well as hands-on instruction in securing Web communications and sites. You will learn the common vulnerabilities of Web sites; as well as, how to carry out secure communications across unsecured networks. All system administrators and IT security managers will find this book an essential practical resource.



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what is a "MXRECORD"?

It is used in DNS (domain name server). The MX record of a domain is an IP number that tells a mailserver where to deliver a message. For example if you send a message to someone @microsoft.com, the message will go to a server called mail1.microsoft.com with an IP number of 131.107.3.125, because the MX of Microsoft is set to mail1. So if you, or anyone sets up a new server, you will need to set an MX for the domain to ensure that mail gets sent to the proper PC. To make matters slightly more complicated, MX usually has preferences associated with it, to allow secondary PCs to handle mail when the primary mail server is down. So, in the Microsoft example it also uses servers called mail2,mail3,mail4 and mail5 each with their own IP numbers.
========================================================

What is an MX record?
Answer:There are two types of DNS record of particular intersest to the delivery of mail, MX and A records.
Failure to set your MX records correctly will result in no (or sporadic) delivery of email to your mail server so it is essential that you sent them up correctly. Note: Setting up and configuring DNS servers is outside the scope of support provided by Gordano for GMS.
MX stands for Mail eXchange and is a particular type of DNS record that determines where any email destined for your domain should be delivered. An MX record would typically point to the fully qualified name of your mail server, which in turn must have a corresponding A record in DNS that defines the IP address of the mail server.
A records define the mapping between a fully qualified hostname and its IP address. It is this mapping that allows users to type in sensible names for your servers such as www.yourdomain.com rather than having to remember the more complex IP address assigned to that server.

A typical DNS entry for yourdomain.com may look something like IN MX 10 mail.yourdomain.com IN MX 20 mail.yourisp.commail.yourdomain.com IN A 1.2.3.4
To provide redundancy, many domains are set up to have multiple MX records as in the following example yourdomain.com IN MX 10 mail.yourdomain.com IN MX 20 mail.yourisp.commail.yourdomain.com IN A 1.2.3.4
The numbers after MX indicate the priority of that entry, the lower the number the higher the priority. So in the above exampel anyone attempting to send mail to yourdomain.com would perform an MX lookup in DNS and obtain the two results. They would first attempt to contact mail.yourdomian.com to deliver the message, and only if they fail to connect to this server would they go on and try mail.yourisp.com.
Note that in the example above there is no A record for mail.yourisp.com, this is because the A record for that server would appear in the DNS record for the domain yourisp.com