Soluții pentru problemele tale IT
AirDrop is a fantastic feature available on iPhones, iPads, and Macs that allows Apple devices to share large files via Bluetooth. While there is no limit to the size of file that you can send using AirDrop, but sometimes a larger file may fail to send or take a long time.
[mai mult...]Check the next steps to see how you can enable annotation processing in IntelliJ IDEA.
[mai mult...]By far the most simple and non-technical method, resetting internally from your PC’s BIOS menu during bootup is also the safest and most consistent with the manufacturer’s intentions. It should be your preferred method unless you encounter difficulties starting up your computer or accessing the BIOS menu conventionally.
Pre-Windows 10 builds should look for instructions during bootup, with F2 providing access on most machines. Windows 10 users have several options, though the first is the easiest:
Hold down the shift key while you restart your computer
You should see a blue screen with advanced troubleshooting options
The first of our more technical solutions involve removing and replacing the CMOS battery. Not every type of motherboard includes a CMOS battery, which provides a power supply so that motherboards can save BIOS settings. Bear in mind that when you remove and replace the CMOS battery, your BIOS will reset.
Here’s how to do it:
Our final method for resetting your BIOS involves clearing your motherboard jumper, but it’s almost always limited in application to desktop PCs. It can also involve making fine adjustments to your motherboard, so you should take precautions before you start. You’ll definitely need to do some research beforehand as well.
First, you’ll need to check your owner’s manual or make sure you can successfully identify your motherboard jumper. They often look different, so familiarity with one or another type is not always a guarantee. Videos and guides are common, and manufacturers usually outline these procedures fairly clearly.
Start by disconnecting your computer’s power supply, unplugging all connections, and grounding everything
From here, follow the jumper-clearing instructions in the manual or online guide for your specific motherboard
You can often find them near your CMOS battery or by identifying a small plastic pin covering with associated language. But to avoid hiccups or settings problems, it’s crucial that you work from instructions tailored to your device.
Your computer’s motherboard has a special jumper that can clear the BIOS saved settings and revert them to their original values.
By clearing the jumper, you can also reset the password for the BIOS menu. To do so, follow these steps:
Shutdown your computer
Flip the power switch so that the computer receives no power.
Make sure you’re grounded. Static discharges can damage your computer.
On the motherboard, find a jumper that’s named like any of the following. (This jumper is usually placed near the CMOS battery.)
CLEAR CMOS
CLEAR
CLR CMOS
CLR PWD
Set the jumper to the Clear/CLR position
Power on and start your computer
Once your PC has booted, turn it back off, move the CLR jumper back to its original position. Otherwise, each time you reboot, your settings (and clock) will automatically reset!
It’s important to note that when you reset your home router you will lose all of your current network settings, like the name of the Wi-Fi network, its password, etc
How to Reset a Router
Should i reset my router to factory settings?
Routers, like computers, work best with regular hard resets. Resetting a router can also clear the memory, which is critical for those with multiple devices or an older router. Resetting your router is an easy way to prevent malware attempts – the FBI even recommends router resets for that reason.
How often should you reset your router?
Know when to reboot your router so you can maintain a healthy, speedy internet connection. A good rule of thumb is to reboot your router or wireless gateway once a month to clear out its memory and refresh your wired and wireless connections or just when you have issues with it.
How to Secure Your Wireless Network
The good news is that it is not very hard to make your wireless network secure, which will both prevent others from stealing your internet and will also prevent hackers from taking control of your computers through your own wireless network. Here a few simple things that you should to secure your wireless network:
Step 1. Open your router settings page
First, you need to know how to access your wireless router’s settings. Usually you can do this by typing in “192.168.1.1” into your web browser, and then enter the correct user name and password for the router. This is different for each router, so first check your router’s user manual.
You can also use Google to find the manuals for most routers online in case you lost the printed manual that came with your router purchase. For your reference, here are direct links to the manufacturer’s site of some popular router brands – Linksys, Cisco, Netgear, Apple AirPort, SMC, D-Link, Buffalo, TP-LINK, 3Com, Belkin.
Step 2. Create a unique password on your router
Once you have logged into your router, the first thing you should do to secure your network is to change the default password* of the router to something more secure. This will prevent others from accessing the router and you can easily maintain the security settings that you want. You can change the password from the Administration settings on your router’s settings page. The default values are generally admin / password.
PS:What do the bad guys use – This is a public database of default usernames and passwords of wireless routers, modems, switches and other networking equipment. For instance, anyone can easily make out from the database that the factory-default settings for Linksys equipment can be accessed by using admin for both username and password fields.
Step 3. Change your Network’s SSID name
The SSID (or Wireless Network Name) of your Wireless Router is usually pre-defined as “default” or is set as the brand name of the router (e.g., linksys). Although this will not make your network inherently* more secure, changing the SSID name of your network is a good idea as it will make it more obvious for others to know which network they are connecting to.
This setting is usually under the basic wireless settings in your router’s settings page. Once this is set, you will always be sure that you are connecting to the correct Wireless network even if there are multiple wireless networks in your area. Don’t use your name, home address or other personal information in the SSID name.
Also see: Change Network Name to Prevent Wi-Fi Theft
PS:What do the bad guys use – Wi-Fi scanning tools like inSSIDer (Windows) and Kismet (Mac, Linux) are free and they will allow anyone to find all the available Wireless Networks in an area even if the routers are not broadcasting their SSID name.
Step 4. Enable Network Encryption
In order to prevent other computers in the area from using your internet connection, you need to encrypt your wireless signals.
There are several encryption methods for wireless settings, including WEP, WPA (WPA-Personal), and WPA2 (Wi-Fi Protected Access version 2). WEP is basic encryption and therefore least secure (i.e., it can be easily cracked*, but is compatible with a wide range of devices including older hardware, whereas WPA2 is the most secure but is only compatible with hardware manufactured since 2006.
To enable encryption on your Wireless network, open the wireless security settings on your router’s configuration page. This will usually let you select which security method you wish to choose; if you have older devices, choose WEP, otherwise go with WPA2. Enter a passphrase to access the network; make sure to set this to something that would be difficult for others to guess, and consider using a combination of letters, numbers, and special characters in the passphrase.
PS:What do the bad guys use – AirCrack and coWPAtty are some free tools that allow even non-hackers to crack the WEP / WPA (PSK) keys using dictionary or brute force techniques. A video on YouTube suggests that AirCrack may be easily used to break WiFi encryption using a jail-broken iPhone or an iPod Touch.
Step 5. Filter MAC addresses
Whether you have a laptop or a Wi-Fi enabled mobile phone, all your wireless devices have a unique MAC address (this has nothing to do with an Apple Mac) just like every computer connected to the Internet has a unique IP address. For an added layer of protection, you can add the MAC addresses of all your devices to your wireless router’s settings so that only the specified devices can connect to your Wi-Fi network.
MAC addresses are hard-coded into your networking equipment, so one address will only let that one device on the network. It is, unfortunately, possible to spoof a MAC address*, but an attacker must first know one of the MAC addresses of the computers that are connected to your Wireless network before he can attempt spoofing.
To enable MAC address filtering, first make a list of all your hardware devices that you want to connect to your wireless network**. Find their MAC addresses, and then add them to the MAC address filtering in your router’s administrative settings. You can find the MAC address for your computers by opening Command Prompt and typing in “ipconfig /all”, which will show your MAC address beside the name “Physical Address”. You can find the MAC addresses of Wireless mobile phones and other portable devices under their network settings, though this will vary for each device.
PS:What do the bad guys use – Someone can change the MAC address of his or her own computer and can easily connect to your network since your network allows connection from devices that have that particular MAC address. Anyone can determine the MAC address of your device wireless using a sniffing tool like Nmap and he can then change the MAC address of his own computer using another free tool like MAC Shift.
Step 6. Reduce the Range of the Wireless Signal
If your wireless router has a high range but you are staying in a small studio apartment, you can consider decreasing the signal range by either changing the mode of your router to 802.11g (instead of 802.11n or 802.11b) or use a different wireless channel.
You can also try placing the router under the bed, inside a shoe box or wrap a foil around the router antennas so that you can somewhat restrict the direction of signals.
Apply the Anti-Wi-Fi Paint – Researchers have developed a special Wi-Fi blocking paint that can help you stop neighbors from accessing your home network without you having to set up encryption at the router level. The paint contains chemicals that blocks radio signals by absorbing them. “By coating an entire room, Wi-Fi signals can’t get in and, crucially, can’t get out.”
Step 7. Upgrade your Router’s firmware
You should check the manufacturer’s site occasionally to make sure that your router is running the latest firmware. You can find the existing firmware version of your router using from the router’s dashboard at 192.168.*.
Connect to your Secure Wireless Network
When choosing from among WEP, WPA, WPA2 and WPA3 wireless security protocols, experts agree WPA3 is best for Wi-Fi security. As the most up-to-date wireless encryption protocol, WPA3 is the most secure choice.
Once you have enabled the various security settings in your wireless router, you need to add the new settings to your computers and other wireless devices so that they all can connect to the Wi-Fi network. You can select to have your computer automatically connect to this network, so you won’t have to enter the SSID, passphrase and other information every time you connect to the Internet.
Your wireless network will now be a lot more secure and intruders may have a tough time intercepting your Wi-Fi signals.
Who is Connected to your Wireless Network
If you are worried that an outsider may be connecting to the Internet using your Wireless network, try AirSnare – it’s a free utility that will look for unexpected MAC addresses on your Wireless network as well as to DHCP requests. Another option is that you open your router’s administration page (using the 192.168.* address) and look for the DHCP Clients Table (it’s under Status > Local Network on Linksys routers). Here you will see a list of all computers and wireless devices that are connected to your home network.
*It is also a good idea to turn off the router completely when you are not planning to use the computer for a longer period (like when you are out shopping). You save on electricity and the door remains 100% shut for wireless piggybackers.
**If you ever want to let a new device connect to your network, you will have to find its MAC address and add it to your router. If you simple want to let a friend connect to your wireless network one time, you can remove his MAC address from the router settings when he or she leaves your place.
[mai mult...]Turn on Bluetooth
After you’ve checked that your Windows 10 PC supports Bluetooth, you’ll need to turn it on.In Settings: Select Start > Settings > Devices > Bluetooth & other devices, and turn on Bluetooth.
Note: For more info about how to change the apps and settings that appear in action center, see Change notification and action settings in Windows 10.
To pair a Bluetooth headset, speaker, or other audio device
To pair a Bluetooth keyboard, mouse, or other device
To pair a Bluetooth printer or scanner
Turn on your Bluetooth printer or scanner and make it discoverable. The way you make it discoverable depends on the device. Check the device or visit the manufacturer’s website to learn how.
To pair a Bluetooth device using Swift Pair
Swift Pair in Windows 10 lets you quickly pair a supported Bluetooth device with your PC. If the Bluetooth device supports Swift Pair, you’ll receive a notification when it’s nearby and you put it into pairing mode to make it discoverable.