Monday, September 28, 2009
Monday, August 10, 2009
install windows7 evolution copy build 7100
kat sini saya nak tunjukkan cara2 nak install windows 7.windows 7 ni asal die windows longhorn sebelum vista.dan apabila microsoft mengetahui kelemahan vista, para engginear die buat penambahbaikan dan terhasillah windows vienna dan nama tersebut di tukar menjadi windows 7
k saya nak tunjuk serba sedikit cmane nak install windows 7.mula masukkan cd dan apabila kuar arahan pada screen hitam enter sahaja.tunggu sampai kuar paparan ini
kemudian klik next
klik install now.lepas tu akan keluar paparan ini
sampai keluar paparan ini
>
klik accept pastu next
pastu klik pada custom advanced.akan keluar paparan ini
installation lebih kurang mcm vista je..papran diatas menunjukkan partition pada pc tersebut.pilih salah satu partition dan klik next.
perhatian
pastikan patition yang di pilih saiz 30gb ke atas,ini kerana windows 7 memerlukan 18gb saiz hard disk dan 10gb free space,
installation bermula
dan akhirnya maka siaplah installation windows 7
selamat mencuba...
k saya nak tunjuk serba sedikit cmane nak install windows 7.mula masukkan cd dan apabila kuar arahan pada screen hitam enter sahaja.tunggu sampai kuar paparan ini
kemudian klik next
klik install now.lepas tu akan keluar paparan ini
sampai keluar paparan ini
>
klik accept pastu next
pastu klik pada custom advanced.akan keluar paparan ini
installation lebih kurang mcm vista je..papran diatas menunjukkan partition pada pc tersebut.pilih salah satu partition dan klik next.
perhatian
pastikan patition yang di pilih saiz 30gb ke atas,ini kerana windows 7 memerlukan 18gb saiz hard disk dan 10gb free space,
installation bermula
dan akhirnya maka siaplah installation windows 7
selamat mencuba...
How to Downgrade Vista to XP
Downgrading from Windows Vista to Windows XP is almost like installing Windows XP for the first time. You should take all the normal precautions like backing up all your important files and record important passwords in a different place, preferably on a CD. When you downgrade from Windows Vista to XP, note that Windows Vista will be completely removed from your system.
(Note: There is a way to have both Vista and XP in a dual boot configuration, but that's an option for more advanced users. See Dual Booting Vista and XP for more info on that.)
Before you begin the XP installation, make sure that the necessary XP hardware drivers are available, or included on the XP disk provided by your PC vendor. If in doubt, check the vendor's website or poke around with your favorite search engine to see if others have attempted the XP install on the same hardware. You may be able to install XP without all the needed drivers, but some hardware may not work afterwards.
Also, make sure that you have a genuine Windows XP CD before you begin the downgrade. Be sure to read the section earlier in this article to see if you qualify for a low/no cost XP recovery disk from your PC vendor. If not, perhaps you have an XP disc that came with another computer. If you've upgraded an existing computer from XP to Vista, the best choice would be the XP install/recovery disc that came with that computer. One some PC's the vendor doesn't ship a CD, but the recovery CD can be created from disk images on the hard drive. If all else fails, you can always buy a copy of Windows XP on Ebay. Just be sure it's a legal, licensed copy.
Follow these steps to install Windows XP on your Vista machine:
* Insert your Windows XP install/recovery CD and restart your computer.
* Install Windows XP normally, providing either the product key that came with the disk, or the one you got from Microsoft customer support. If the installer warns you that another copy of Windows is already installed, don't worry. Remember, this install will wipe out your existing Vista installation.
* Activate your copy of Windows XP when it prompts you to do so. If you run into the "already activated" problem, you can use the option to activate by phone.
* If you own Vista Business or Vista Ultimate, explain to the rep that you want to use your Downgrade Rights to install XP Pro.
* If you own Vista Home Basic/Premium, or you are installing XP Home Edition, don't mention ANYTHING about Vista. Just give the rep your XP product key (not the Vista key), explain that you are installing XP on a new hard drive, and tell them you need to activate.
Have you successfully downgraded from Vista to XP? Share your experience. Got questions or comments about downgrad
(Note: There is a way to have both Vista and XP in a dual boot configuration, but that's an option for more advanced users. See Dual Booting Vista and XP for more info on that.)
Before you begin the XP installation, make sure that the necessary XP hardware drivers are available, or included on the XP disk provided by your PC vendor. If in doubt, check the vendor's website or poke around with your favorite search engine to see if others have attempted the XP install on the same hardware. You may be able to install XP without all the needed drivers, but some hardware may not work afterwards.
Also, make sure that you have a genuine Windows XP CD before you begin the downgrade. Be sure to read the section earlier in this article to see if you qualify for a low/no cost XP recovery disk from your PC vendor. If not, perhaps you have an XP disc that came with another computer. If you've upgraded an existing computer from XP to Vista, the best choice would be the XP install/recovery disc that came with that computer. One some PC's the vendor doesn't ship a CD, but the recovery CD can be created from disk images on the hard drive. If all else fails, you can always buy a copy of Windows XP on Ebay. Just be sure it's a legal, licensed copy.
Follow these steps to install Windows XP on your Vista machine:
* Insert your Windows XP install/recovery CD and restart your computer.
* Install Windows XP normally, providing either the product key that came with the disk, or the one you got from Microsoft customer support. If the installer warns you that another copy of Windows is already installed, don't worry. Remember, this install will wipe out your existing Vista installation.
* Activate your copy of Windows XP when it prompts you to do so. If you run into the "already activated" problem, you can use the option to activate by phone.
* If you own Vista Business or Vista Ultimate, explain to the rep that you want to use your Downgrade Rights to install XP Pro.
* If you own Vista Home Basic/Premium, or you are installing XP Home Edition, don't mention ANYTHING about Vista. Just give the rep your XP product key (not the Vista key), explain that you are installing XP on a new hard drive, and tell them you need to activate.
Have you successfully downgraded from Vista to XP? Share your experience. Got questions or comments about downgrad
Tuesday, August 4, 2009
website-website tentang network security
kat sini saya sertakan website-website security network dan post ini akan diupdate dari semasa ke semasa:
http://www.securityfocus.com
http://sectools.org/
http://cybersecurity.org.my
http://mycert.org.my
http://www.iss.net/
http://netsecurity.about.com/
http://www.interhack.net/pubs/network-security/
http://www.securityfocus.com
http://sectools.org/
http://cybersecurity.org.my
http://mycert.org.my
http://www.iss.net/
http://netsecurity.about.com/
http://www.interhack.net/pubs/network-security/
Monday, August 3, 2009
What Is Security?
*
Security is a measurement, not a characteristic.
It is unfortunate that many software projects list security as a simple requirement to be met. Is it secure? This question is as subjective as asking if something is hot.
*
Security must be balanced with expense.
It is easy and relatively inexpensive to provide a sufficient level of security for most applications. However, if your security needs are very demanding, because you're protecting information that is very valuable, then you must achieve a higher level of security at an increased cost. This expense must be included in the budget of the project.
*
Security must be balanced with usability.
It is not uncommon that steps taken to increase the security of a web application also decrease the usability. Passwords, session timeouts, and access control all create obstacles for a legitimate user. Sometimes these are necessary to provide adequate security, but there isn't one solution that is appropriate for every application. It is wise to be mindful of your legitimate users as you implement security measures.
*
Security must be part of the design.
If you do not design your application with security in mind, you are doomed to be constantly addressing new security vulnerabilities. Careful programming cannot make up for a poor design.
labih lanjut layari web ni : http://phpsec.org/projects/guide/1.html#1.1
Security is a measurement, not a characteristic.
It is unfortunate that many software projects list security as a simple requirement to be met. Is it secure? This question is as subjective as asking if something is hot.
*
Security must be balanced with expense.
It is easy and relatively inexpensive to provide a sufficient level of security for most applications. However, if your security needs are very demanding, because you're protecting information that is very valuable, then you must achieve a higher level of security at an increased cost. This expense must be included in the budget of the project.
*
Security must be balanced with usability.
It is not uncommon that steps taken to increase the security of a web application also decrease the usability. Passwords, session timeouts, and access control all create obstacles for a legitimate user. Sometimes these are necessary to provide adequate security, but there isn't one solution that is appropriate for every application. It is wise to be mindful of your legitimate users as you implement security measures.
*
Security must be part of the design.
If you do not design your application with security in mind, you are doomed to be constantly addressing new security vulnerabilities. Careful programming cannot make up for a poor design.
labih lanjut layari web ni : http://phpsec.org/projects/guide/1.html#1.1
Securing Apache Web Server with mod_security
he Internet has its share of packet filters and proxy servers in order to increase the security for clients and servers alike. Filtering network traffic is never a bad idea since it provides a basic level of protection. When it comes down to protecting web servers your packet filter will most probably allow HTTP and HTTPS traffic to your server application. Unless you deploy an application proxy that inspects HTTP you can't do more. But you can equip your Apache web server with mod_security which in turns helps you to analyse any request thrown at it.
Application Layer Inspection
When you do any network traffic filtering or inspection you have to keep in mind that usually nothing understand the things that should be inspected better than the application in question. This is one of the reasons why proxy filters are "better" suited for this job. They know the protocol and can normalise fancily encoded requests. mod_security is in a very similar position. It sits right inside the Appache httpd process and inspects the HTTP requests. This is an important advantage over proxies since it can also see compressed or even encrypted content without difficulties.
So, what needs to be inspected? Apache's httpd surely does inspect HTTP requests. What do I need more? Well, there are some things mod_security can do for you.
* Better logging
The module can log the content of HTTP POST requests. Apache usually doesn't log that. Furthermore you can log complete HTTP transactions. This makes the job of a potential attacker harder. In addition to that you have a very fine control on what and when to log.
* Real time operation
mod_security sees the requests directly and can act immediately.
* Anomalies
The security module can act on anomalies in the web server operation by looking at request rates, IP addresses, HTTP sessions and user account.
* Black-/whitelisting
You can use a signature-based approach and define what you want to allow and what you want to block.
* Protects other web servers
You can even protect other web server software by combining it with mod_proxy. The Apache server can act as reverse proxy thus seeing all HTTP requests and applying rule sets.
nak lebih lanjut layari : http://linuxgazette.net/143/pfeiffer.html
Application Layer Inspection
When you do any network traffic filtering or inspection you have to keep in mind that usually nothing understand the things that should be inspected better than the application in question. This is one of the reasons why proxy filters are "better" suited for this job. They know the protocol and can normalise fancily encoded requests. mod_security is in a very similar position. It sits right inside the Appache httpd process and inspects the HTTP requests. This is an important advantage over proxies since it can also see compressed or even encrypted content without difficulties.
So, what needs to be inspected? Apache's httpd surely does inspect HTTP requests. What do I need more? Well, there are some things mod_security can do for you.
* Better logging
The module can log the content of HTTP POST requests. Apache usually doesn't log that. Furthermore you can log complete HTTP transactions. This makes the job of a potential attacker harder. In addition to that you have a very fine control on what and when to log.
* Real time operation
mod_security sees the requests directly and can act immediately.
* Anomalies
The security module can act on anomalies in the web server operation by looking at request rates, IP addresses, HTTP sessions and user account.
* Black-/whitelisting
You can use a signature-based approach and define what you want to allow and what you want to block.
* Protects other web servers
You can even protect other web server software by combining it with mod_proxy. The Apache server can act as reverse proxy thus seeing all HTTP requests and applying rule sets.
nak lebih lanjut layari : http://linuxgazette.net/143/pfeiffer.html
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