Thursday, September 24, 2009
Thursday, August 27, 2009
firwall appilication
FIREWALL APPLICATION

A firewall is a part of a computer system or network that is designed to block unauthorized access while permitting authorized communications. It is a device or set of devices configured to permit, deny, encrypt, decrypt, or proxy all (in and out) computer traffic between different security domains based upon a set of rules and other criteria.
Firewalls can be implemented in either hardware or software, or a combination of both. Firewalls are frequently used to prevent unauthorized Internet users from accessing private networks connected to the Internet, especially intranets. All messages entering or leaving the intranet pass through the firewall, which examines each message and blocks those that do not meet the specified security criteria.
A firewall is a dedicated appliance, or software running on a computer, which inspects network traffic passing through it, and denies or permits passage based on a set of rules.
It is a software or hardware that is normally placed between a protected network and an unprotected network and acts like a gate to protect assets to ensure that nothing private goes out and nothing malicious comes in.
A firewall's basic task is to regulate some of the flow of traffic between computer networks of different trust levels. Typical examples are the Internet which is a zone with no trust and an internal network which is a zone of higher trust. A zone with an intermediate trust level, situated between the Internet and a trusted internal network, is often referred to as a "perimeter network" or Demilitarized zone (DMZ).
A firewall's function within a network is similar to physical firewalls with fire doors in building construction. In the former case, it is used to prevent network intrusion to the private network. In the latter case, it is intended to contain and delay structural fire from spreading to adjacent structures.
Without proper configuration, a firewall can often become worthless. Standard security practices dictate a "default-deny" firewall ruleset, in which the only network connections which are allowed are the ones that have been explicitly allowed. Unfortunately, such a configuration requires detailed understanding of the network applications and endpoints required for the organization's day-to-day operation. Many businesses lack such understanding, and therefore implement a "default-allow" ruleset, in which all traffic is allowed unless it has been specifically blocked. This configuration makes inadvertent network connections and system compromise much more likely.
"An intermediary device, sitting between a web-client and a web server, analyzing OSI Layer-7 messages for violations in the programmed security policy. A web application firewall is used as a security device protecting the web server from attack."
- Web Application Security Consortium Glossary
Standard firewalls are designed to restrict access to certain ports, or services that an administrator doesn't want unauthorized people to access.
Web Application Firewalls are often called 'Deep Packet Inspection Firewalls' because they look at every request and response within the HTTP/HTTPS/SOAP/XML-RPC/Web Service layers. Some Web Application Firewalls look for certain 'attack signatures' to try to identify a specific attack that an intruder may be sending, while others look for abnormal behavior that doesn't fit the websites normal traffic patterns. Web Application Firewalls can be either software, or hardware appliance based and are installed in front of a webserver in an effort to try and shield it from incoming attacks.
Information on the types of 'signatures' that a web application firewall may use can be found in the "Fingerprinting Port 80 Attacks" papers in our Articles section
Thursday, August 6, 2009
Oracle buying sun (assignment)
This day I’m tired of making my own blogs but for the sake of my subject of for Ms. dada, I’ll do it.
Now, I’m starting from the article that Ms. Dada gave us as an assignment for this lab meeting. This article of an Oracle Corporation buys Sun Microsystems. This Oracle makes enterprise applications and database software that complete with Microsoft’s offerings. Sun created Java, a windows-independent platform that scared the hell out of Bill Gates for over a decade. Java now-a-days manipulates all our mobile phones, there are many Java application in the internet that you can now download in your own personal computer or even in your mobile access internet phone’s and it keeps dominating the cellphone market.
Questions:
1.What do you think is the effect of Oracle buying sun?
- For me as a student buying such things can help me more enhanced on any particular things such as Java language and even I can help my country for having this system because as I connect to this system, my integration cost will go down while system performance, reliability and security goes up. And if that so many people would have the knowledge to do things made by java languages. Maybe all the things that surrounds us can be made by java systems. But there are things that we can’t live without, and it can never be replaced by anyone or by anything like this system (java). All things have their own limitations, even us people, we have our own limitations. I know that people would do everything just to make their selves fit to all the new trends that coming their way, but this trends are only panandalian, they will just pass throughout the generations and vanish like a bubble, and us people we do not know that all we take from that trends are not as useful as we thought. I know that computer and new gadgets are really the new trends of this generation and also new software’s and systems, for if we do not have such things, maybe we are the poorest country in the whole world.
2.What do you think would Bill Gates do about this?
- People are looking for some fun that were they can learn what fun that they have and Bill Gates has nothing to do with that, all the people now-a-days are enjoying the accompany of java, java languages and all forms of java today. Now that java is around, we cannot blame the people who would not use the offerings of Microsoft for java also have a Microsoft offerings such that upgraded and has more unique features that people would enjoy. Bill Gates should accept the offerings not for its country but for the people who are craving for new technology and new knowledge for a new life style. I know that Bill Gates is just concerned about the Microsoft that he owns but to think forwardly, he should also think into the bright side, many people would also look forward for their future, and for that they also need new technology trends to make their life style be in the place and not being left behind. Bill Gates should also think that he is not the only one who is needing it, there are lots of people are needing it specially that now we are in the new generation.
3.To you as a student, using java, how will these later affects your learning on the language?
- For me as a student, Java is very helpful in my studies especially that I’m an IT student. These languages are very useful in programming and it may cause very large difference if I learn more about these languages, for Java is now everywhere. I don’t want to be left behind for this generation dahil lng hindi ko alam ang mga ganitong languages, I’m in the world of new technology and new generation right now, I should pursue my skills in order to be complete and to be modernalized. IT students or professionals really have a great opportunity outside our country, and JAVA programming languages are part of it. I know that there are many kinds of languages that can cover a program but the latest of all this trends is the java languages. The Oracle buying can help more in my career as a student, of course this modern life should not stick in the vintage things or articles or anything that is old long time ago. It can help more in our society and government for the rising of the jobs and there are much possible jobs for our fellow countrymen if this is implemented.
Ms. Dada, sorry if I did not make it to the 300 words that you’ve said, di ko na kya mam, and if mag patuloy ko, mag balik2 lng ko sa akong point, ma daot hinoon akong blog and for xur if I turn around the bushes mas gamay ang score na akong makuha. Sorry mam.
Thursday, July 23, 2009
Aska Tripper V Hard Drive-Based Card Reader (a latest storage device)

Here’s a latest handy Aska Tripper V Hard Drive-Based Card Reader, this Tripper V is Aska’s latest photo storage device, using a hard drive as its medium. This storage device combines either a 40GB, 80GB or 160GB hard drive with a 4.3-inch screen to let digital camera hounds both store and inordinate amount of photos and then view them, show them off to your friends and etc. This new series is compatible with OS. Windows 2000/XP/Vista and Mac OS. It as a play back MPEG-4 file, so it’s not wholly limited to showing photos from you tripper to war saw. And it has a camera connector, that it can easily transfer your photos from your camera to your Tripper V hard drive and make a slideshow out of it.
This Tripper V hard drive is a limited edition of Mitubishi Electric Corporation and only 100 pieces is available for direct sales only

This storage device has a built in lithium ion rechargeable battery,
the Tripper V series photo viewer measures 153×30×78mm, weighs approximately 370g and is available with a carrying case. TripperV40 (40GB-only 100 pieces available) costs 39,900 Yen ($340), TripperV80 (80GB) for 49,980 Yen ($425), TripperV120 (120GB): 69,825 Yen ($593) and TripperV160 (160GB): 79,800 Yen ($978).
output devices

A new product that falls within a completely different category of devices with Windows Mobile than the abovementioned It’s name is Acer c530, a navigation system compatible with Windows Mobile system. The Acer c530 is not only the usual equipment such as power supply, synchronizing USB cable or simple protection case, but also a practical two-part holder by which the device may be attached to glass, and a power supply unit for a car cigarette lighter socket. Simply said, it is a complete car navigation solution.
The device itself looks very elegant. At first glance, it seems bigger than it actually is, due to the dominant black surface on the front of the device. Only parts of the lateral edges are silver in color. Due to its dimensions and round bottom edge, the device fits perfectly in the hand. The weight must satisfy even the most stubborn haters of pocket computers. For easy operation, the front part of the device is equipped with four programmable buttons with a mini-joystick in the middle. Special buttons for operation of the system are missing, but if you feel that these are of vital importance, you can assign their functions to the Calendar and Contacts buttons. Although the small joystick is convenient and looks promising, it cannot handle oblique directions, therefore making this device unsuitable for PC games. However, apart from the games, it can handle everything else, so this problem will affect only a minor group of users. The whole design is very simple, which can especially be seen on the rear part, where there is nothing more than a loudspeaker cover grid. The whole rear part may be removed, providing access to the 200mAh Li-Ion battery. All the edges are also simple. A small connector for attaching a GPS aerial, protected by a rubber plug, the main on/off switch and one LED displaying only system events and reminders can be found on left side of the device. It was the only LED, which is moreover situated on the side, a praiseworthy initiative on part of Acer. LEDs in bright colors are not attractive anymore, and their bright blue or red light is annoying for a certain percentage of users. Anyway, the state of various wireless modules can be determined in different ways apart from looking at the furiously flashing lights. The last control device that is situated on the left side is a HOLD button that deactivates all buttons when activated, ensuring safe shut down. An SD card slot and little reset button are situated on the right side. On the top edge only one hole can be found, serving to attach headphones, while on the bottom edge a mini-USB connector is located.
This device is very useful to all the travelers, in terms of the navigation skills, you can reach your destination safe and sound.
input device
Epson Perfection V30 Flatbed Color Image Scanner

Here’s another research for new current trends for this year a new Epson V30 scanner, it’s easy to use and very portable.
It is more useful for all the photographers; it can easily turn the old pictures into new ones.
The Epson Perfection V30 Scanner is the scanner which has an amazing clarity and detail. With this scanner's remarkable resolution, you can easily create extraordinary images. It also offers easy setup plus one-touch scanning. So, whether you choose to archive important documents or your favorite photos, you can be up and running in no time. Bring those faded color photos back to life effortlessly with the Perfection V30.
This performer even includes a high-rise lid for scanning books and other 3D objects. With an innovative LED light source, the Perfection V30 provides fast scans with no warm-up time.
It is really easy to use, it can easily scan photos and documents and it has a fully automatic scanning. It can also restore the color of the faded photos, and our environment, it is a earth-friendly LED technology.
Its specs are:
Scan Quality
Scan Sensor
Epson Color MatrixCCD sensor
Optical Resolution
4800 dpi
Hardware Resolution
4800 x 9600 dpi with Micro Step Drive technology
Interpolated Resolution
12,800 x 12,800 dpi
Color Depth
48-bit RGB (internal & external)
Dynamic Range
Not Specified by Manufacturer
Scan Area
Reflective Scan Area
8.5 x 11.7"
Transparency Scan Area
No
Film Formats
Not Applicable
Performance
Preview Speed
Not Specified by Manufacturer
Scan Speed
12.0 msec/line (4800 dpi High-speed Mode)
Batch Scanning
No
Automation
Auto Color Restoration
Connectivity
Interface
USB 2.0 (Hi-Speed)
System & Software Requirements
Windows System
· BM compatible PC with Pentium II 450 MHz or higher processor
· Windows Vista, XP (x64, Home, Pro), 2000 Professional, Vista
· 512MB RAM
· 215MB of available hard drive space minimum
· CD-ROM drive (4x or faster)
· Available USB connection (Hi-Speed USB 2.0 recommend)
Macintosh System
· PowerPC G3 400MHz or Intel-based CPU
· Macintosh OS X (10.3.9 or later)
· 128MB RAM (256MB recommended)
· 200MB hard disk space minimum
· CD-ROM drive (4x or faster)
· Available USB connection
Physical
Light Source
ReadyScan LED
Front Panel Controls
Power, Scan, Scan to E-mail, Copy, Scan to PDF
Power Requirements
100-120V AC; 50-60Hz
Dimensions (WxDxH)
11 x 16.9 x 2.2" (429 x 279 x 56mm)
Weight
5.7 lbs (2.6kg)
Thursday, July 9, 2009
Ergonomic Keyboards
I would like to introduce to you the Ergonomic keyboard. It can help you through your typing skills, and relax your hand muscles when yoo are typing. It is very comfortble to use. Here it is..
Ergonomic keyboards
Carpal tunnel syndrome is a medical condition - more common in women than it is in men - in which the median nerve is compressed at the wrist causing symptoms like tingling, numbness, night time wakening, pain, coldness, and sometimes weakness in parts of the hand.
Though ergonomically designed keyboards had existed before, prior to the introduction of the Microsoft Natural Keyboard, such devices were neither widely available nor reasonably priced. Introduced in 1995, the Microsoft Natural Keyboard was a split keyboard with each half of the keyboard separated and tilted upwards and down from the centre of the keyboard. This key arrangement was specifically designed to prevent carpal tunnel syndrome and other repetitive strain injuries associated with typing for long periods of time. The keyboard also helps to ensure correct posture while sitting in at the computer.
Microsoft's original design has subsequently been refined, including the introduction of a row of customisable buttons above the function keys for launching applications or controlling play of music.
Other ergonomic keyboards have fixed, vertically aligned keys, so the user types with his or her hands perpendicular to the ground, thumbs-up. Still others allow a range of rotation and elevations. A few ergonomic keyboards do not have the typical one key per letter, such as keyless.

Another ergonomic keyboards is the
'split keyboard'. A "split keyboard" is a single board, with the keys separated into two or three groups, allowing the user to type at a different angle than the typical straight keyboard. An "adjustable split keyboard" has the keyboard split into several independent pieces, so the angle between them can be easily changed. Either of these types of keyboards may include elevated sections at various angles.
There are advantages and disadvantages to this ergonomic keyboards. The advantages are, it can reduces muscle strain and reduces risk of carpal tunnel syndrome, then after a user takes the time to adjust to this style of keyboard, these keyboards can make typing far easier, faster and less awkward. and the disadvantages are, They take a little practice to get used to, and many people don't want to go to the trouble of adjusting, and may take a large amount of space on your computer table and force the mouse to be further away.
There are also other ergonomic keyboards that suit your needs.
Ergonomic Multimedia Keyboard with Built-In
Touchpad - PS2 Connection,
Ergonomic Multimedia Keyboard with Built-In
Touchpad - PS2 Connection,
Ergonomic Multimedia Keyboard with Built-In
Touchpad - USB Connection,
Ergonomic Multimedia Keyboard with Built-In
Touchpad - USB Connection,