troubleshooting your pc for dummies 2nd edition pdf

... PM Page 362 362 C For Dummies, 2nd Edition The learn folder is where you place all the files created in this book. Linux, FreeBSD, Mac OS X, or Unix: To create a folder for your C program- ming ... compiling and linking specifics for your oper- ating system. For Macs before OS X, see the reference material that came with your compiler. Making GCC work in Windows Heck, for all the advances made ... operating system. For Windows and older Mac systems, you must obtain a compiler. That’s not as difficult as it sounds. 37 570684 AppA.qxd 3/31/04 2:58 PM Page 360 360 C For Dummies, 2nd Edition The

Ngày tải lên: 12/08/2014, 09:22

... actual informa-tion that is shown on a Web page or in an Internet applicainforma-tion Filtering con-tent refers to the actual format of data that can be downloaded from the Internet For example, ... true for an ISP firewall service that can’t be tailored to your spe-cific needs Single-Box Solution: Dual-Homed Firewall The simplest solution for a firewall architecture that you can deploy yourself ... Defining rules on what your firewallshould do is not the complete picture You have toset up a working solution, too In this part, you see howyou can place your firewall into your network to ensurethat

Ngày tải lên: 14/08/2014, 02:20

... collect information for registrations, newsletters, or purchas- ing information. Typically, this information is stored in a database. Figure 12-5 shows a typical DMZ configuration for a Web server ... for the firewall computer For example, if you want to enable remote administration of your firewall, you have to configure a rule for the input chain to allow whatever network traffic your ... firewall computer For example, if your firewall needs to contact a DNS server for name lookups,... forms of network address translation SNAT changes a packet’s source address before sending it

Ngày tải lên: 14/08/2014, 02:20

... application proxy performing, 76–79Check Point FireWall-1 support for,335–336 configuring rules for, 77–79content rating as criteria for, 167–168date and time as criteria for, 168definition of, ... improve the security of your network For example, this Web site features a long,annotated list of intrusion-detection systems that you can use to assesswhether your firewall is performing correctly ... www phoneboy.com Check here for the latest information about FireWall-1 www.interhack.net/pubs/fwfaq Newsgroups have been part of the Internet for many years These are forums where people post questions

Ngày tải lên: 14/08/2014, 02:20

... computer’s mood, for example Variables can change  Where are variables stored? In your computer’s memory This informa­tion isn’t important right now; the computer makes room for them as long ... –2,147,483,647 through 2,147,483,647  More information about naming a variable — and other C language trivia about variables — is offered in Chapter 8 For now, forgive me for the unofficial introduction Trang ... variable In printf()’s formatting string, the %d conversion charac­ter is used as a placeholder for an integer value %d works for integers, just as %s is a placeholder for a string One thing

Ngày tải lên: 12/08/2014, 09:21

... single-character variable  if cannot compare strings For information on comparing strings, refer to my book C All-in-One Desk Reference For Dummies (Wiley)  Less than and greater than and their ... and you aren’t shunned in the C programming com­munity for using it, I recommend using curly braces with your if statements until you feel comfortable reading the C language Trang 8Clutter not thy ... to dodge this one This problem is ideal for the if keyword to solve You pay taxes based on either your height or the temperature outside, multiplied by your favorite number and then 10 Whichever

Ngày tải lên: 12/08/2014, 09:22

... the computer estimates your IQ based on this formula: iq=(age*weight)/area; That is, your IQ is equal to your age multiplied by your weight, with that total divided by your area code All those ... in kind (known as generating a value) For example, a function that computed your weight based on your shoe size would swallow your shoe size and cough up your weight So to speak Input and output ... that for you, returning the value happily to the main() int age,weight,area; float iq; printf(“Program to calculate your IQ.\n”); printf(“Enter your age:”); Trang 12Type the source code for IQ.C

Ngày tải lên: 12/08/2014, 09:22

... you to map a port (for example, 8030) on the public IPaddress of the firewall to a different port on the internal server, which allowsfor “secret” ports to your internal server For example, you ... firewall to collect and remember information per user over time and mustinclude mechanisms for coordinating the information if multiple fire-walls are used for the same purpose Trang 8When setting ... analyze them for signs of security problems — sort of like a burglar alarm for your firewall This is called an intrusion detection system Just analyzing the packets at the firewall for telltale

Ngày tải lên: 14/08/2014, 02:20

... can be forwarded to a different DNS server If your DNS server supports conditional forwarding, you must create both a TCP and a UDP firewall rule for each target DNS server The conditional for-warding ... Internet name resolution to internal clients Your firewall has to allow Internet-based clients to query your DNS server,and you must provide a way for your internal network users to resolveFQDNs ... or it may forward the DNS request to another DNS server on theInternet The point is, you really don’t care For your firewall, all you have to do is configure firewall rules that allow your DNS

Ngày tải lên: 14/08/2014, 02:20

... “You won!”  Personal information: Don’t think you have nothing of value on your computer Of course, hackers may be interested in your credit carddetails and use them for fraudulent charges However, ... fee ZoneAlarm actually comes in three editions The free edition is described here You can also choose from a ZoneAlarm Plus edition and a ZoneAlarm Pro edition, which aren’t free and add a couple ... you like your uncle, it can still be a sufficientanswer, but the truth is that viruses are no longer the only threat to homecomputers Hackers have gained interest in your home computer for several

Ngày tải lên: 14/08/2014, 02:20

... these editions is right for me?” Because the Enterprise Edition is considerably more expensive than the Standard Edition, examine what you may gain by using the Enterprise Edition The Enterprise Edition ... cost of ISA Server For example, suppose that you are paying $200 per month to your ISP to access the Internet The bandwidth that the ISP provides for this amount is not enough for your needs, and ... people in your company or organization use theInternet for more purposes, everyone is bound to see a slowdown beforetoo long because of increasing usage of your link to the Internet Yourlink to

Ngày tải lên: 14/08/2014, 02:20

... increase the performance of a VPN-1 server PerformanceAll network traffic that enters and exits your corporate network will passthrough the FireWall-1 server To ensure that performance is optimal,FireWall-1 ... enter the following information on the General tab: Name: A logical name for the interface IP Address: The IP address for the network interface Net Mask: The subnet mask for the network interface ... Malformed packet logs SmartDEFENSE performs application level inspection to identify File Transfer Protocol (FTP) and Domain NameSystem (DNS) malformed packets Both forms of attack are logged asevents

Ngày tải lên: 14/08/2014, 02:20

... header also contains some other information Most of the time,you don’t have to worry about this information For example, a field for thelength of the packet tells your computer’s TCP/IP stack where ... dotted decimal format, such as 192.168.1.200 However, your computer internally converts Trang 7this number into decimal format You can take a look at Table 2-2 to followalong as we perform this operation ... provide support for very big networks as well as very small networks, we can change how many bits are used for each part of the address For example, we could use only the first 8 bits for the network

Ngày tải lên: 04/12/2015, 19:57

... and your industry work? 8 Can you demonstrate your character and trustworthiness? Make sure that you can answer yes to all these questions before youapproach your banker Set yourself up for success! ... Customer Trang 28your business, your customers, and the market This section helps youcreate the right marketing plan for your company.Prepare to do the plan Before you sit down to outline your marketing ... otherwords, step outside of yourself for a bit and look objectively at yourbusiness and what it offers  Know your competition as well as you know your own company Look at what your competitors are

Ngày tải lên: 30/12/2022, 14:15

... platform for your organization.Evaluate Your NeedsConsider the nature of your data, the skills and tools already in place, your usage needs, your plans, and how a data platform can take your ... purpose-built and tuned for each workload For example, you might need one type of engine for loading and transforming data via pipelines, another for pro- cessing analytic queries, a third for training ... data for many kinds of workloads Without these essential ingredients, you can’t easily put the data to work for your business. Maximizing Performance for All Data A modern cloud data platform

Ngày tải lên: 08/05/2024, 08:13

... Trang 6CISCO ROUTERS FOR THE DESPERATE, 2ND EDITION Copyright © 2009 by Michael W Lucas.All rights reserved No part of this work may be reproduced or transmitted in any form or by any means, ... Internet fixed Perhaps you call your Internet service provider and beg for help—always a legitimate tactic, but perhaps not the quickest and certainly not the best for your self-respect You Trang ... fuss This will allow you to ask your ISP for the specific information you need, rather than their install tech telling you what you need to obediently type To make your Internet connec-tion work,

Ngày tải lên: 30/03/2014, 20:20

... can also spot errors before your data gets changed Deleting Data Nothing lasts forever, including data The time likely arises when you need toremove certain information from your SQL Server 2005 ... summarizing information If you have an appetite for some more advanced interaction with your SQLServer 2005 Express database, this chapter is for you I begin by showingyou how to define your data ... reliability of yourinformation You also find out how to speed up your database operations bycreating and using indexes Finally, I tell you all about some cutting edgecapabilities for locating and

Ngày tải lên: 08/08/2014, 22:20

... from your geditmenus Each one is placed in its appropriate location: for example, Change Case appears on the Editmenu Saving your work As with most programs, you have two choices for saving your ... more, you can move only forward through the file and see only ascreen’s worth of information at a time You can’t back up To use either lessor more, the format is similar to the format used with the ... it comes to making your Linuxmachine a multimedia center multi-Finally, for those who just can’t leave Windows-only ware and file formats behind, I cover how to add supportfor many of these items

Ngày tải lên: 09/08/2014, 04:21

... shows guidelines for choosing a file format for images by type File Format Best Used For Watch Out GIF Line art and other images with few colors and less detail Don’t use this format if you have ... image is ready for the Web, you need to use the correct markup to add it to your page, but you need to know where to store your image as well Image location You can store images for your Web site ... a few formats are actually appropriate for images you intend to use on the Web As you create Web-friendly images, you must pay attention to file formats and sizes Often, graphics file formats

Ngày tải lên: 14/08/2014, 12:20

... Web site for this book at www.dummieshtml.com, and then check the listings for Chapter 12 for easy access to all source code used to pro- duce screenshots in this book (find links for figures ... JavaScript)... and how it works, please check out JavaScript For Dummies, 5th Edition, by Emily Vander Veer, for more information and to dive a little deeper into the JavaScript language ... Can Do for Your Pages Adding scripts to your Web site is much like those reality-TV makeover shows that transform... The code required to do this sort of pop-up window is fairly straightforward,

Ngày tải lên: 14/08/2014, 12:20