Fix Wi- Fi Problems in OS X Yosemite. Some Mac users who upgraded to OS X Yosemite have discovered a variety of wireless network connectivity issues, ranging from dropping wi- fi connections, to an inability to connect to the outside world despite being connected to a wifi router, even suddenly and strangely slow internet speeds. These network issues seem to occur most often on Macs that have updated to OS X Yosemite from Mavericks rather than those who performed a clean Yosemite install, which could suggest the issue has to do with improper network setting and preferences, or even a corrupted file somewhere. That’s a good thing, because it should mean a resolution is fairly easy to implement, as we’re about to show you. It should be noted that it’s difficult to point to a single cause for sudden and unexpected wireless troubles with any OS X version, and there may be different causes for different users. Accordingly, it’s challenging to offer a single solution to the Yosemite Wi- Fi problems that users are experiencing. With that said, we’ve been able to resolve the problem for many Macs by using the steps outlined below. This involves editing some system level configuration files, and you should probably start a Time Machine backup before proceeding just to be on the safe side of things. Remove Network Configuration & Preference Files. Manually trashing the network plist files should be your first line of troubleshooting. This is one of those tricks that consistently resolves even the most stubborn wireless problems on Macs of nearly any OS X version. This is particularly effective for Macs who updated to Yosemite that may have a corrupt or dysfunctional preference file mucking things up: Turn Off Wi- Fi from the Wireless menu item. ![]() ![]() From the OS X Finder, hit Command+Shift+G and enter the following path: /Library/Preferences/System. Configuration/Within this folder locate and select the following files: com. Network. Interfaces. Move all of these files into a folder on your Desktop called ‘wifi backups’ or something similar – we’re backing these up just in case you break something but if you regularly backup your Mac you can just delete the files instead since you could restore from Time Machine if need be. Reboot the Mac. Turn ON WI- Fi from the wireless network menu again. This forces OS X to recreate all network configuration files. Some of the wireless connectivity problems may be an actual bug shipped with OS X Yosemite. I found a fair amount of reports of people installing older kext files, specifically, the IO80211Family.kext file, from beta releases that. Penggunaan Agar terhubung dengan LAN Wi-Fi, sebuah komputer perlu dilengkapi dengan pengontrol antarmuka jaringan nirkabel. Gabungan komputer dan pengontrol antarmuka disebut stasiun. Semua stasiun berbagi satu saluran. [ YouTube link for mobile viewing] A really cool feature offered by the BlackBerry® PlayBook tablet is the ability to access its file system using Wi-Fi® sharing. This feature allows you to quickly – and wirelessly – copy files to and. This alone may resolve your problems, but if you’re continuing to have trouble we recommend following through with the second step which means using some custom network settings. Create a New Wi- Fi Network Location with Custom DNSWhat we’re doing here is creating a new network location which is going to have a configuration different from the defaults. First, we’ll use a completely new network setup. Then, we’ll set DNS on the computer rather than waiting for OS X to get DNS details from the wi- fi router, which alone can resolve many issues with DNS lookups, since Yosemite seems to be finicky with some routers. Finally, we’re going to set a custom MTU size that is slightly smaller than the default, which will get rejected less often by a router, it’s an old netadmin trick that has long been used to fix network troubles. Open the Apple menu and go to System Preferences, then choose “Network”Pull down the “Locations” menu and choose “Edit Locations”, then click the [+] plus button, give the new network location a name like “Yosemite Wi. Fi” then click Done. How to setup an Access Point mode Wi-Fi Hotspot? Point to be noted: Wireless hotspots aren't the same as ad hoc networks. There is significant difference between the two. In short, ad hoc netwo. Buy Linksys EA6200 Dual Band AC900 Smart Wi-Fi Router with fast shipping and top-rated customer service. Once you know, you Newegg! Wireless-AC for Faster Speed and Reliability Upgrade your wireless home network and. The term “Wi-Fi CERTIFIED Wi-Fi Direct®” designates products that have been certified by Wi-Fi Alliance, and is the commercial name for the certification program. The underlying specification or technology is called “Wi-Fi Peer-to. ![]() Next to “Network Name” join your desired wifi network as usual. Now click the “Advanced” button, and go to the “DNS” tab. Wi Fi Sharing Files Setup FitbitClick the [+] plus button and specify a DNS server – we’re using 8. Google DNS in this example but you should use the fastest DNS servers you can find for your location, it will vary. You can also use your own ISP DNS servers. Now go to the “Hardware” tab and click on ‘Configure’ and choose “Manually”Click on MTU and change it to “Custom” and set the MTU number to 1. OK”Now click on “Apply” to set your network changes. Quit and relaunch any apps that require network access, like Safari, Chrome, Messages, Mail, and your wireless connectivity should be flawless and back at full speed at this point. Reset SMCSome users report that resetting the System Management Controller is sufficient to stir their Wi- Fi back into action. Since many users have a Mac. Book laptop, that’s what we’ll cover first: Turn off the Mac. Book Air or Mac. Book Pro. Connect the power adapter to the Mac as usual. On the keyboard, press and hold down the Shift+Control+Option keys and the Power button at the same time, hold them all for a few seconds. Release all keys and the power button at the same time by lifting your hands away from the keyboard. Boot the Mac as usual. You can read more about resetting SMC here and here for other Macs, including for the i. Mac and Mac Mini. Unload & Reload discoveryd to Fix DNS & Wi- Fi Failures in OS X Yosemite. Another trick that was left in the comments (thanks Frank!) involves refreshing the discoveryd service by unloading and reloading it with the launchctl command. This is a bit curious but apparently it works for some users, suggesting there could be an issue with discovery or resolving DNS on some Yosemite Macs. It’s certainly worth a try if the above tricks failed to resolve your wi- fi connectivity problems in OS X 1. Open Terminal (found in /Applications/Utilities/ or with Spotlight) and enter the following command: sudo launchctl unload - w /System/Library/Launch. Daemons/com. apple. Hit return and enter an admin password to use the sudo command. Now run the following command to reload discoveryd (this used to be called m. DNSResponder)sudo launchctl load - w /System/Library/Launch. Daemons/com. apple. Again hit Return to finish the command. You may need to relaunch apps that require network connectivity. Note that if you reboot the Mac with this one, you will have to repeat the above steps to unload and reload discoveryd into launchd. Bonus OS X Yosemite Wi- Fi Troubleshooting Tricks. Here are some other less than ideal solutions that have been reported to remedy wi- fi issues in OS X Yosemite. Join a 2. 4. GHZ network (N network) – some users report no trouble with 2. GHz networks. Set the wi- fi routers 5. GHz (G) channel to be somewhere between 5. Turn Off Bluetooth – We have seen several reports that disabling Bluetooth will resolve wifi problems with some networks, but this is obviously not appropriate for Macs that have bluetooth accessories. Backup the Mac and then download and update to OS X El Capitan, El Capitan includes many wi- fi fixes and resolves some of the persistent issues that were around with Yosemite. If none of the above works, there could be other problems. Sometimes starting fresh with a clean install could resolve them, or if you believe the problem to be a bug and you had a trouble free experience in prior versions of Mac OS, you could always downgrade from OS X Yosemite to Mavericks again until an update to Yosemite arrives to resolve the issue once and for all. Have you experienced wireless connectivity issues with OS X Yosemite? What have you tried, and how did you resolve them? Let us know what has been working to remedy your wifi troubles by leaving a comment! How to Stay Safe on Public Wi- Fi Networks. Public Wi- Fi networks—like those in coffee shops or hotels—are not nearly as safe as you think. Even if they have a password, you're sharing a network with tons of other people, which means your data is at risk. Here's how to stay safe when you're out and about. Dear Lifehacker, I'm no idiot when it comes to security, and you guys have often mentioned how …. Read more Read more. Just because most wireless routers have a firewall to protect you from the internet doesn't mean you're protected from others connected to the same network. It's remarkably easy to steal someone's username and password, or see what they're doing just by being on the same network. Don't take that chance. We're going to show you which settings are the most important ones, as well as how to automatically change your settings to the appropriate level of security every time you connect to a public network. Blast from the past is a weekly feature at Lifehacker in which we revive old, but still relevant, posts for your reading and hacking pleasure. This week, we're reminding everyone of the importance of Wi- Fi security when you're away from home. The Settings. First, let's start by talking about what settings and apps can keep you safe. Make sure these are enabled anytime you're on public Wi- Fi, whether it's password protected or not. If other people you don't know are on the same network, you want to protect yourself. Turn Off Sharing. When you're at home, you may share files, printers, or even allow remote login from other computers on your network. When you're on a public network, you'll want to turn these things off, as anyone can access them—they don't even need to be a hacker, and depending on your setup, some of that stuff probably isn't even password protected. Here's how to turn off sharing: In Windows: Open your Control Panel, then browse to Network and Internet > Network and Sharing Center, then click Choose Change Advanced Sharing Settings. Once here, you should definitely turn off file and printer sharing, and you may as well turn off network discovery and Public folder sharing. Some of this is done automatically by Windows if you specify the network as public (more on this later). In OS X: Go to System Preferences > Sharing and make sure all the boxes are unchecked. You'll also want to turn off network discovery, which will be in the same place. This will prevent others from even seeing your machine on the network, meaning you're less likely to be targeted. On Windows (as I mentioned), it's just another check box under advanced sharing settings. On OS X, it will be called "stealth mode" and be under your firewall's advanced settings (see below). Enable Your Firewall. Most OSes come with at least a basic firewall nowadays, and it's a simple step to keeping unwanted local users from poking at your computer. You may already be using a firewall, but just in case, go into your security settings (in Windows under Control Panel > System and Security > Windows Firewall; and on a Mac under System Preferences > Security & Privacy > Firewall) and make sure your firewall is turned on. You can also edit which applications are allowed access by clicking on "allow a program or feature" in Windows and "advanced" in OS X. Your firewall is not an end- all, be- all protector, but it's always a good idea to make sure it's turned on. While keeping the firewall on is probably a good idea for the less tech- savvy, there may come a…. Read more Read more. Use HTTPS and SSL Whenever Possible. Regular web site connections over HTTP exchange lots of plain text over the wireless network you're connected to, and someone with the right skills and bad intent can sniff out that traffic very easily. It's not that big of a deal when the text is some search terms you entered at Lifehacker, but it is a big deal when it's the password to your email account. Using HTTPS (for visiting web sites) or enabling SSL (when using applications that access the internet, such as an email client) encrypts the data passed back and forth between your computer and that web server and keep it away from prying eyes. Dear Lifehacker, I'm not a huge nerd, but everyone's talking about switching to HTTPS on…. Read more Read more. Many sites—including Facebook, Gmail, and others—will do it automatically, but keep an eye on the address bar and make sure the "s" in "https" is always there when you're exchanging sensitive information. If it disappears, you should log out immediately. Other sites will default to HTTP connections, but support HTTPS if you manually type it in. Note that if the sensitive browsing can wait—especially if it's something very sensitive like banking or credit card info—you should just wait to do that sensitive browsing at home. There's no reason to risk more than you have to. If you access your email from a desktop client such as Outlook or Apple Mail, You'll want to make sure that your accounts are SSL encrypted in their settings. If not, people could not only theoretically read your emails, but also get your usernames, passwords, or anything else they wanted. You'll need to make sure your domain supports it, and sometimes the setup might require different settings or ports—it's not just a matter of checking the "use SSL" box—so check your email account's help page for more details. If it doesn't support SSL, make sure you quit the application when you're on a public network. Consider Using a Virtual Private Network. Unfortunately, not all sites offer SSL encryption. Other search engines and email providers may still be vulnerable to people watching your activity, so if you use one of these sites frequently (or really just want the extra protection), you may want to try using a VPN, or virtual private network. These services let you route all your activity through a separate secure, private network, thus giving you the security of a private network even though you're on a public one. You have a lot of choices, and we've rounded up some of the best VPNs here—but if you don't feel like doing the research, we recommend Cyber. Ghost as a dead simple, free option. Install it on your computer, turn it on whenever you're on a public network, and you'll be much safer than without it. You may know what a VPN, or Virtual Private Network, is; you probably don't use one. You…. Read more Read more. Turn Wi- Fi Off When You Aren't Using It. If you want to guarantee your security and you're not actively using the internet, simply turn off your Wi- Fi. This is extremely easy in both Windows and OS X. In Windows, you can just right- click on the wireless icon in the taskbar to turn it off. On a Mac, just click the Wi- Fi icon in the menu bar and select the turn off Air. Port option. Again, this isn't all that useful if you need the internet, but when you're not actively using it, it's not a bad idea to just turn it off for the time being. The longer you stay connected, the longer people have to notice you're there and start snooping around. How to Automate Your Public Wi- Fi Security Settings. Obviously, you don't want to have to manually adjust all of these settings every single time you go back and forth between the coffee shop and your secure home network. Luckily, there are a few ways to automate the process so you automatically get extra protection when connected to a public Wi- Fi network. On Windows. When you first connect to any given network on Windows, you'll be asked whether you're connecting to a network at your home, work, or if it's public. Each of these choices will flip the switch on a preset list of settings. The public setting, naturally, will give you the most security. You can customize what each of the presets entails by opening your Control Panel and navigating to Network and Sharing Center > Advanced Sharing Settings. From there, you can turn network discovery, file sharing, public folder sharing, media streaming, and other options on or off for the different profiles. That's a good start, but if you want a bit more control, previously mentioned. Net. Set. Man is a great program to customize your network profiles for different networks; you choose your IP address, DNS server, or even run scripts (opening the window for pretty much any action) every time you connect to one of your preset networks. On OS X. OS X doesn't have these options built- in like Windows, but an app like Control. Plane can do a fair amount of customization. With it, you can turn on your firewall, turn off sharing, connect to a VPN, and a whole lot more, all depending on the network you've connected to. In Your Browser. The previously mentioned. HTTPS Everywhere Firefox extension automatically chooses the secure HTTPS option for a bunch of popular web sites, including the New York Times, Twitter, Facebook, Google Search, and others, ensuring secure HTTPS connections to any supported web site, every time you visit. You can even add your own to their XML config file. Note that as a Firefox extension, this works on Windows, Mac, and Linux. Chrome/Firefox: HTTPS Everywhere is a simple extension that, with just a one- click installation,…. Read more Read more. Consider a "Safety First" Approach. If you're a real road warrior, you may find yourself adding so many profiles that automating your safe settings at every step along the way may seem like a lot of work. While most chains like Starbucks or Mc. Donald's should have the same names for each of their Wi- Fi networks (and thus your profiles will carry over), a better approach may be to make your more secure settings the default for your system, and create just one profile for your home network. Thus, by default, file sharing would be turned off, your firewall would be at its most secure state, and so on—then, when you return home to your protected network, you can have Airport Location or Net. Set. Man turn your less secure settings on.
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