Aug 30
ecsem3Battery technology, Digital camera review, laptop, laptop battery, notebook review Hp pavilion dv2000 battery
The PC World explains what ports and port scanner such as Nmap, as you discover vulnerabilities including Nmap and protect themselves against attackers.
Each PC requires open ports for Internet, Mail and Messenger. For ports, the input and output ports of your computer and Hp pavilion zv5000 battery, any Internet-related applications are an open port required. But open ports are potential gateways for attackers. Moreover, important for the in-depth understanding of firewalls knowledge of ports.
The lion’s share of Internet communication is done via the TCP and UDP protocols, so for example, the Internet traffic that is going on in your browser or mail program. Any application that is connected to the Internet in connection point to the TCP and UDP port number. So “” knows every data packet, to which application it belongs, so to speak, the port is the address for a particular type of Internet data. A HTTP packet for the browser ends up not in the mail program and a package of mail found its way into your mail client and not end up in the browser, thanks to each packet reaches its correct destination port numbers.
Sockets are the addresses of PCs and servers
Completing the address of a data packet with the IP address of the target Rechnerns. The combination of IP address of the target host and port number of the target application on the target machine is called a socket. Two sockets define a connection, one for the output and one for the target computer and Hp pavilion dv2000 battery. Thanks to the socket of each data Pact lands on the correct computer in the correct application. Conversely, there are of course on the server that makes the data available, the sockets, that is: There, too, have the appropriate ports open. Which brings us back to the subject would be.
Responsible for incoming mail POP3 server is working for example on port 110, a web server listening on port 80 (if you run even a web server on your computer, you have this when commissioning a port. Default is 80, is there an other its port (because you run two web servers simultaneously, for example), you must explicitly specify the way such as Apache’s configuration file).
Each data packet therefore knows which port it is addressed. For this he is in fact added to the header of the data segment the sender and the destination port number. This applies to both the TCP and UDP for the protocol.
Server processes are always static port numbers, client requests get assigned to every request against a dynamic port number. A unique socket for a request to a web server (as are the open source Apache or Internet Information Services IIS from Microsoft) with the IP address 192.168.1.18 might look as follows: 192.168.1.18:80. And if the requesting client computer’s IP address 192.168.100.12 has, then the socket for the supplied site would look like this: 192.168.100.12:49152 – whereby the latter would be the dynamically allocated port for the answer.
Hp pavilion dv9000 battery Hp pavilion dv8000 battery ibm thinkpad x60 battery
Aug 27
ecsem3Battery News, business news, laptop, laptop battery Sony vgp-bps9/b battery
Route, nslookup: DNS routing tables and conversion
Route change : Routing tables and print
Routing refers to the forwarding of data packets from a network (LAN , Internet) to another. The router has this so-called routing tables.
Route Print
With route and the appropriate options or commands, change the routing table of your computer and Sony vgp-bps9/b battery. For example you can set a new gateway : route change. Or print out the existing route : route print, the result is also the result of the command netstat -r. add together with a number of options you add a new route. With route / s , show all options.
These routing tables are typically created dynamically , either through the OSPF or RIP protocol. Routers on the way, additional commands to route management, for example, show ip route.
Nslookup
With the help of the DNS protocol (Domain Name System ) can be connected easily to man -to-remember host name with an IP address. With nslookup , you can manually send a request to a name server to resolve a host name. You can also find your name servers with nslookup and identify problems with name resolution.
Nslookup provides all the information to the DNS server of your computer and Sony vgp-bps9/s battery. Enter a host name when you start nslookup , for example www.pcwelt.de . Nslookup it resolves to an IP address.
Hostname , FTP , Telnet
Hostname:Get the hostname of your PC.
FTP : File upload and download via File Transfer Protocol
Usually you do FTP transfers with a suitable FTP client, such as Filezilla or a file manager with integrated FTP function as Total Commander. FTP uploads you make such as when you update your website , FTP downloads occur when the latest version of Firefox will pull down from the FTP server from Mozilla.org before it is officially known . But for just in case the FTP command family is also on the command line. By entering FTP ( which stands for File Transfer Protocol) you start an FTP session to Quit to exit this again. Read the help information before you start an FTP session.
By the way: Just like the classic FTP is also the command Telnet available. With it you can connect from a Telnet client with a Telnet server. Please note for both commands , however, that the Data is not encrypted and therefore passwords and login data will be transmitted in plain text.
More information in:vgp-bps8 battery inspiron 6400 battery Dell inspiron 1501 battery
Aug 23
ecsem3Battery technology, laptop, laptop battery, notebook review, tips apple a1175
Online programs are not run unnecessarily
Myth 4 An active firewall log must constantly attacks
Many firewalls report by pop -up when they discard packets that arrive without having been previously requested by a program. The pop – ups appear as a warning , sometimes even tone.But these warnings are almost always superfluous : In most cases , the reported packages only the answers to questions which have one of your tools – generated about the browser – which , however, are unaware of the firewall .
Anyone who dials also new to an online connection , you get an IP address that was eventually awarded recently to a different PC,Dell inspiron 2650 battery and sent to the remaining packages.
Also: Hackers scan the Internet for vulnerable computers running automated . Check per ping, which allow incoming connections computer by scanning all the IP address ranges. Just go to some worms. Even such scans loose in a mitteilungsfreudigen a firewall warning .
Consequence: Turn off the news – usually the firewall offers this option.
Myth 5 Closed ports enhance security
Basically mean fewer open ports less attack surface. But there is a method that can be closed ports deal : In the so -called tunnels sends the user via an open port dienstfremde data that are not intended for transmission via this port. In order to trick the network service of the port , the user data previously converted in the format .
One example: Almost always , the port 80 is open to the HTTP protocol. On such a HTTP tunnel can be exchanged and FTP data , although the FTP port 21 ( ) is closed. The FTP data were embedded it in an HTTP protocol. Especially popular for tunneling connections over HTTPS ( Hypertext Transfer Protocol Secure ) are . The integrated encryption prevents evaluate the firewall sent the data and can eventually block . Many file-sharing programs , which are used to music, movies and other files exchanged over the Internet tunnel , the data on port 80, as their default port is blocked in many companies.
However, must be configured for a tunnel , both sides of the connection. Is active on a PC no tunnel software, an attacker can not use from outside the gap.
Consequence: With the firewall to make the ports close makes sense in any case. More important is that you are not doing any online programs – such as an FTP server – you do not need. But the tools you need , you should always provide you with updates.
More information in:Dell inspiron 640m battery Dell inspiron 1720 battery apple a1175 Dell inspiron 9400 akku
Aug 16
ecsem3Battery News, Battery technology, Digital camera review, business news, laptop toshiba satellite a70 battery
UltraVNC: Remote Control Platform independent
For the PC remote control in daily practice has a variety of applications. One of the classic areas in addition to inter-site server administration, access to information on the go. Mobile users can use your notebook computer and toshiba satellite a70 battery v to work and work with the tools and data.
Flexible remote access are the administrators with the open-source VNC control. The client program is small and can be started without installation from USB stick. server modules are for the host PC is available for Windows, Linux and Mac OS, VNC clients exist also for Pocket-PCs/PDAs and as a Java applet for the remote control in the browser.
Currently, programs vie three free VNC for the favor of users: RealVNC ’s VNC-original program and in terms of transmission speed is no longer the follow up to date at TightVNC is it is the big brother of RealVNC with built-in data compression for an acceleration of the screen setup. In parallel, UltraVNC developed, a number of extensions and plug-ins available and recently also supported on Windows Vista. Compatible all are to each other, for they are all based on the original VNC. Only UlraVNC brings traffic with the required encryption.
PuTTY: Remote Login from Windows desktop
PuTTY is a recommended terminal program for SSH and Telnet sessions with configurable function keys. The freeware tool replaces the insecure Telnet and provides encryption and authentication procedures for remote access to a computer on the LAN or via the Internet.
Also in the tool box of administrators is WinSCP. The open source SFTP client with a graphical user interface uses the SSH protocol and can be used as an FTP client comfortable. Among the extras are in addition to the protected file transfer the functions of batch processing, command line input, integrated text editor and directory synchronization.
Unlocker: Locked files sharing
Sometimes the attempt to delete a file will be acknowledged with an error message because the element is locked. Only after a reboot, the blockade is lifted – at least in some cases. Instead of presenting Freeware UnlockerWhich attaches itself to the installation in the context menu of Windows Explorer. After choosing a locked file or directory , you call the right mouse button , select Unlocker and click on the button Unlock. After the item is unlocked can be deleted,it is also good for your computer and toshiba satellite a60 battery.
The freeware Adapter Watch provides status information about network interface. Among the data displayed by the tool include IP address , MAC address , DNS, the number of transmitted packets , transmission speed and packet statistics.
More information in:toshiba satellite a10 battery Toshiba satellite a100 battery compaq presario v3000 akku
Aug 13
ecsem3Battery technology, Digital camera review, laptop Apple PowerBook G4 Battery
This brings a router with hardware firewall
Hardware firewalls or broadband routers provide a good additional protection against threats from the Internet. Since they separated from the work computer run, they are themselves less vulnerable to attack. So you can reliably all unsolicited mail from the Internet discarded. Disadvantages of a router : Even on a DSL router is running an operating system that is not one hundred percent immune from attack , This is mostly Linux, but again there attack scenarios on the operating system , software and configuration.
Fend off attacks on DSL router
The disadvantages or weaknesses of a DSL router, you can offset by the following measures:
- Install regular updates for your DSL router. It gives you not only new features but also include security issues,it also can protect your Dell 1691p.
- If you do not need Universal Plug and Play ( UPnP) , disable this function in your DSL router.
- Change necessarily the default password , otherwise attackers can log on vulnerabilities from the outside. This point is not only relevant, if your DSL router comes with an individual password. This is about the Fritzbox and the devices from T -Home of the case.
- Before you change the password, a reset ( manual). If the box already have been tampered with , the change is made so reversed.
Firewall as a complement to DSL router
Most DSL routers to block attacks from the Internet . But they will inform the user does not have applications that send data from your PC (Apple PowerBook G4 battery)to the Internet. In short : everything from the PC wants to talk to the Web , do this – even Trojans, bots and other pests. Why is a desktop firewall a good addition to the protection from a DSL router.
Virus safety in the home network
The biggest threat comes from the PC from viruses , Trojans and other pests. With a good anti-virus software and the right advice to protect themselves effectively. The fraudsters to spread their malware in three ways:
More information in:vgp-bpl8 battery sony vgp-bps2c
Dell latitude d820 battery
Aug 11
ecsem3Battery News, Battery technology, Digital camera review, laptop, laptop battery Dell latitude d600 battery
Phones : Using secret codes
With the help of the star and the pound key and the number field you elicit from your phone specific info. The combination * # 06 # shows such as the International Mobile Equipment Identity (IMEI ) that 15-digit identification number of your phone – no matter which company it comes from . If your device is stolen and turns up again , you can see from the IMEI number as your property.
Samsung phones : You change with * # 0523 # the contrast of the display. Information about the storage space you get with * # 0377 # (for the T100 : * # 8999 * 636 #), the battery level with * # 9998 * 228 #.
Nokia phones : The key combination * 3370 # activates Enhanced Full Rate Codec ( EFR ), through which the device uses the best sound quality – but this feature is at the expense of Dell inspiron 710m battery life. To deactivate the EFR simply type # 3370 #.
Sony -Ericsson phones : And if you have accidentally entered wrong with your Sony Ericsson phone , the PIN , select the new command prompt ” No “and press ** 04 * 0000 * 0000 * 0000 #. To come after all, the menu of the mobile.
Motorola phones to make faster
Do you can have your Motorola mobile legs , then call you to perform certain functions faster and run . You will need the manufacturer program Flash & Backup and the English-language tool Moto Speed. Connect your phone via USB to the PC. Start the Flash & Backup 3 , and set the menu language of the software on German . Note the folder for backup “(probably “C : \ \ Program Files \ Motorola Tools \ Flash & Backup 3 \ Backup \<Backup date>”). Go to ” Data Read “, and set before ” CG15 (DRM graphics ) ” is checked. Select the backup format ” SMG (Binary Data) “, and start the backup with ” read data “. Close the program when the operation is completed.
Now start Moto Speed, and change the language to English . Click on ” File, Open “, and select the saved file by double -clicking DRM . You will now see a list with many special characters. Now put one by each value by 25 to 50 per cent down – about “1500 “to” 750 ” . Save the changes by clicking the ” Save changes file in DRM from . Now you have to play the file back to your phone. Open to Flash & Backup 3 , then the option ” Add Data “. Click the “Select backup file “. The tool shows you the backup file automatically. Select it and press ” OK “. With “Write Data “to start the flash process . After you turn the phone the shortened working hours are effective,when your inspiron 8200 battery is full .
CD / DVD burner unlock : quality control in Linux
Almost all CD and DVD burners are now equipped with techniques that will ensure optimum burning results – such as the optimum firing rate of a blank. With a Windows machine it is ok to perform these functions. But not all of the techniques can also be used on Linux. With Qpxtool You can unlock various quality tests. The English-language open- source program examines media described for correctable and uncorrectable errors, and the quality of the writing process and terms Jitter Beta. Also notes the tool , the maximum reading speed , or the transfer rate and compares the data on CD / DVD with the required specifications . To use the tool , start the qpxtool.exe file from the disk. Insert a recorded CD / DVD in your drive ( all supported drives , see Compatibility List). Choose “Device” your drive. Click on “Device , Update media info “so qpxtool the loaded CD / DVD recognize. Put on the tab “Media” checkbox for the required audits, and select the reading speed (scan speed off). “Run Test “to start the scan . After you run the software shows the test results graphically.
More information in:Dell inspiron 8600 battery inspiron mini 9 battery Dell latitude d600 battery
Jul 20
ecsem3Battery News, Battery technology, laptop, laptop battery thinkpad x60 series battery
MSI Wind U160 Netbook presents
MSI is developing itself a proud history of netbook computers, but whilst the Taiwanese manufacturer’s original 2008 foray – the Wind U100 – took the concept of cheap and cheerful all too literally, its 2010 successors hope to introduce an added sense of sophistication,its battery specification is similar to thinkpad x60 series battery.
Take for example the MSI Wind U160, a modern netbook that aesthetically, at least, doesn’t reflect a relatively paltry £330 asking price.
First unveiled at January’s Consumer Electronics Show, the system abandons the Wind’s traditional clamshell design in favour of something more sleek and refined.
Measuring under 20mm at its thickest point, it’s MSI’s thinnest-ever netbook and our review sample – equipped with a useful six-cell battery – weighs just 1.2kg, making it small, ultra-thin, ultra-light and suitably portable in every sense.
At this year’s CeBIT is a netbook from MSI , which is particularly conspicuous by their long battery life.
The 6 -cell battery of the MSI Wind U160 netbook to offer up to 15 hours battery life it is same to the sony vgp-bps2c. The device MSI at CeBIT 2010 C38 in Hall 17 , Stand . The Wind U160 will go on sale in March and will cost € 349 and be available in black and gold . With a height of 25 mm, the Wind U160 is currently the thinnest netbook with an Atom N450 CPU. The 10- inch display is said to have a response time of 8 ms .
By Eco -mode users select the various modes , including ” Normal “and “Turbo Battery ” for a long useful life. Even the mechanical switch to Wi-Fi when not in use the wireless function to help save power. MSI also promises easy access to main memory to replace the RAM module. Furthermore , the Netbook with 1.3 – megapixel webcam , Bluetooth , card reader and three USB 2.0 ports equipped . Using Windows 7 starters used.
There is no slot for UMTS cards only in an additional version of the U160 .
More information in:Sony vgp-bps9 battery Sony vgp-bps9a battery Sony vgp-bps9/b battery
Jun 25
ecsem3Battery technology, laptop, laptop battery inspiron 1501 battery
Netbooks come with multi- touch display , notebook with ten hours of running time , but the mobile host at CeBIT 2010 are not only faster and more economical, but also beautiful.
Most new laptops at CeBIT in 2010 working with a new mobile CPU from Intel: Processors are i3 Core , Core i5 and Core i7 notebooks not only speed up significantly , but grant them a longer inspiron 1501 battery life.
Multitouch is another trend: Some manufacturers equip their devices with a touch-sensitive display off, on the mobile computer can be controlled with a finger. The Tablet PC Fujitsu Lifebook T900 , for example, a 13.3- inch touch screen. The Mini 5102 Netbook will also be available with either multi – touch display.
The first notebooks with the new USB 3.0 interface , you can see on the CeBIT 2010th To upgrade older notebooks to the USB Sharkoon delivers 3.0 Express Card with two USB 3.0 ports , which are backward compatible with USB 2.0.
However, not only the intrinsic values include : The CeBIT 2010 mobile PCs offer much for the eye again . The Asus NX90 for example, is worth seeing a luxury notebook , the B & O developed chief designer David Lewis : It should , of course, guarantee , above all music and movie playback in highest quality. The Asus U Series notebooks come in a bamboo look and will provide a natural, minimalist aesthetic. With the new Eee PC Seashell Karim Rashid collection has a design Asus Netbook in the program, which has designed the designer Karim Rashid. The case with wave pattern is available in pink , coffee brown .
Some manufacturers also see schools as a new market,such as Compaq laptop Battery. With the Mini 2102 , HP offers a specially designed netbook for schools and education at an affordable price.
More information:inspiron 6400 battery Vostro 1500 battery Dell vostro 1510 battery
Jun 24
ecsem3Battery technology, laptop, laptop battery, tips Dell vostro 1500 battery
Slow processor
One of the components except the display -hungry processor – especially if he is running under full load. This helps the freeware Notebook Hardware Control (NHC ), which you charge Download.
Notebook Hardware Controlist very easy to use . It allows a processor to herunterzutakten own, if it is not in use. This house offers from different NHC profiles – such as the mains or battery power. Besides the processor controls NHC also power management of video cards and hard disks , so your notebook up to 50 percent longer run .
BIOS update
The BIOS is responsible, among other things, to detect the RAM bar or the drives, just as it controls power management. For this reason, it pays to keep the BIOS up-to -date. With notebooks , you can find BIOS updates at the homepage of the respective manufacturer . There is usually a link support, where you can search for your exact device name . So only the best updates are displayed.
Caution: A BIOS update is always associated with a risk. So please read the manufacturer’s instructions carefully and make sure that the notebook is unplugged. Turn the laptop on update under any circumstances, .
Update Driver
Just as important as BIOS updates are current device drivers. These increase the efficiency of Dell inspiron 6400 battery , maximizing the ideal case , both the performance and power consumption. Moreover, the stability is improved ( especially in Vista) and extends the feature set . Drivers can be found mostly on the sides of the notebook manufacturer , but there rarely are ready the latest versions. Go directly to the better producers of individual components.
To find out the exact name of components, there is the Freeware SIW. Below the main driver candidates at a glance with a short description of the update utility : * Chipset: This driver is responsible for accessing memory and drives , and can therefore raise the performance of the system significantly. Which manufacturer to you is blocked , you will see in SIW under Hardware / Motherboard / North Bridge,Dell vostro 1500 battery and so on .
In the case of Intel, the search is the easiest , as all drivers will be offered as a package. Go to www.intel . com / support / en and search for chipsets. The results should then be visible to the entry “Software Installation Utility for Intel chipsets . This you should install .
At AMD, Nvidia and SiS have the drivers themselves are culled . * Graphics : The graphics card or graphics chip is listed in SIW under Hardware / Devices / card. The most common manufacturers are S3 AMD / ATI, nVidia, Intel or for older devices . Thanks to optimizations for new computer games of the performance gain is often double-digit percentage range.
* WLAN: Wi-Fi devices may require updated drivers benefit greatly . Thus, not only increases the stability and speed of wireless connections , the support of the new WPA and WPA2 encryption is often via driver update. SIW in the details of the wireless chip as the hardware / devices / network adapters are found.
* Bluetooth: To make the Bluetooth component found, look in SIW under Hardware / Devices / Bluetooth devices. Here too an update stability.
Sound: With sound chips worth an update as well. This will give you compared to Windows standard drivers are more configuration options. In SIW you find the sound chip under Hardware/Devices/Audio- , video and game controllers. For Dell vostro 1510 battery of laptops , the chips are often made by Realtek and Analog SoundMax .
* mouse: The built- in laptop touch pads or track points are made in most cases of Synaptics www.synaptics.com . Whether this is also the case for you , you will see in SIW under Hardware / Devices / Mice and other pointing devices. The update brings here mainly for enhanced functionality and improved sensitivity.
* Card reader driver updates for readers include the encouragement of larger memory cards. In these devices under SIW Hardware/Devices/PCMCIA- and flash memory devices are listed.
More information in:Dell inspiron 1520 battery Dell xps m1730 battery
Jun 15
adminlaptop express card, how to, install, laptop
When we enjoy a weekedn with our family and shoot many pictures. We want to store it in our laptop battery and share with any other friends with email. We use the ExpressCard to connect the camera memory card with the laptop. Also ExpressCard plug-in hardware available includes TV tuners, mobile broadband cards, FireWire 800 (1394B), Serial ATA external disk drives, solid-state drives, wireless network interface cards, TV tuner card common access card (CAC) reader and soundcards. Media remote control units are available that use the ExpressCard slot to store and recharge battery4.us.
So we must at least know how to remove and install a ExpressCards.
How to remove an ExpressCard or Blank
Inface removing an ExpressCard is a very easy thing. You can complete it only by two steps:
1.Press the Dell Latitude D620 Battery card or blank to remove it from its slot.
2.Save a blank to use when no Dell Latitude D510 Battery ExpressCard is installed in a slot. Blanks protect unused slots from dust and other particles.
How to install an ExpressCard or Blank
You can install Express Card while the Dell Latitude D630 Battery computer is running. The computer automatically recognizes the card.
ExpressCards are generally marked with a symbol (like a triangle or arrow) or specify a label, which end in the slot to connect. The Dell Latitude D520 Battery cards are keyed to prevent incorrect insertion. If the map orientation is unclear, consult the documentation that came with the card.
To install an ExpressCard:
Keep the card shows the top of the card facing up.
Insert the card into the slot until the Dell Latitude D830 Battery card is fully engaged in the port.
If you encounter too much resistance, no force. Check the card orientation and try again.
The computer recognizes the ExpressCard and automatically loads the appropriate device driver. If the setup program tells you to load the Dell Latitude D820 Battery drivers from the manufacturer to use the media that came with the Express card.
Older Entries
RSS
