41 votes
Accepted

Bandwidth limiting in Yosemite

You can use Network Link Conditioner. You will want to ignore the testing settings. Make a Custom Profile and set to have no packets dropped and no delay. Start with uplink and downlink at 2.45 Mbps ...
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  • 184k
28 votes

Prevent a specific app from accessing the Internet

What you're looking for is called an application firewall. One free/open source program that does this job is called LuLu -- https://objective-see.com/products/lulu.html -- with code on github here. ...
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  • 453
25 votes
Accepted

How do I get these Internet/Wi-Fi details to give to tech support and is it safe?

Yes, those details are safe to provide. They are measurements of the quality of your wireless signal, and they contain no personal information. You can view these and other details from the Wi-Fi ...
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  • 61.8k
16 votes
Accepted

How to configure proxy settings for a specific network?

You need to make specific network configuration: System Preferences > Network > Location: > Edit Locations... left down + button, enter a new netowrk configuration name, for example Office /...
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  • 11.2k
15 votes
Accepted

Internet speed getting slower over time on MBP

In my case this was caused by the Juniper/Pulse Secure VPN client's kernel extension, which was active even when not connected to the VPN. Unloading the kernel extension restored speed without a ...
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14 votes

Prevent a specific app from accessing the Internet

You can use a 3rd party app called Little Snitch to block Internet access for individual apps. Little Snitch comes with a limited 30 days free trial and costs € 45 for single user license thereafter. ...
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  • 45k
12 votes

MacBook Pro Certificate - no value specified - Business Category : Private Organization

It’s perfectly normal, and there’s no need to do anything (except click on OK to close the window) or worry about it. Safari is just showing you the encryption details for the apple.com website — you ...
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  • 10.3k
11 votes

Blocking websites on OS X

You can do this using Parental Controls on the Guest account. See Apple's KB article regarding this for the procedure: OS X Mountain Lion: Filter inappropriate Internet content Manage a user with ...
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  • 45.2k
11 votes

How can I see bandwidth usage on a Mac?

You can try nettop(1) in the Terminal. It is pre-installed, and refreshes every few seconds to provide a dashboard of all open network connections with their usage. Better than lsof since it shows the ...
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  • 319
11 votes

How to simulate slow internet connections on the mac

Mac OS X 10.10+ users need to use dnctl and pfctl but documented usage examples aren't easy to find. # Configure `pfctl` to use `customRule`. (cat /etc/pf.conf && echo "dummynet-anchor \"...
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11 votes
Accepted

How to unfreeze terminal when SSH connection dies?

You can suspend and then kill the ssh process that's hung up. To do this you have to issue the escape sequence, suspend the ssh process, and then use kill -9 to kill that process. The default escape ...
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  • 44k
10 votes
Accepted

Easily disable/enable all network connectivity

Damnit. I searched for a while but without using the keywords "airplane mode osx" which only came to me when I edited my question here. Research using these words led to a very useful answer ...
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  • 271
8 votes

Safari does not load any site but there is Internet connection

I solved by making sure the network settings not picking any proxy options under Network > Advanced > Proxies.
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  • 81
8 votes
Accepted

Can't login with Google using Internet Accounts

Open Keychain Access. Make sure "login" is selected in the upper left under "Keychains" and manually delete every entry that is associated with Google (any entry with Google in the name, I deleted). ...
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  • 96
7 votes

How to auto connect to VPN upon login/boot?

Another way to go about this, is by creating a Configuration Profile (using Apple Configurator). Using this tool, recreate your VPN configuration and save the file. After you've created the file, open ...
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  • 1,071
7 votes

Set Mac to use Wifi for Internet, Ethernet for local file transfer

There are tools like Marco Polo that can change such settings based on location, but you will need to actually change your location, or have some other automated way to trigger this change. While ...
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  • 4,881
7 votes

How is the Apple Watch connected to the Internet?

From the "Apple Watch User Guide" Apple Watch uses Bluetooth® wireless technology to connect to its paired iPhone and uses the iPhone for many wireless functions. Apple Watch can’t configure new Wi-...
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  • 3,740
7 votes
Accepted

What is "http://init-p01st.push.apple.com"?

It is a server used for push notifications for iOS and OS X. If you block it, you may not receive push notifications.
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  • 14.9k
7 votes

Prevent a specific app from accessing the Internet

You can try Hands Off. It is free. Works almost like Snitch. https://www.oneperiodic.com/products/handsoff/
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6 votes

How to show that my Internet connection is still up and active in menu bar?

With regard to modifying the system AirPort icon, I do not believe that what you are asking for is possible. To show internet connectivity, I use a combination of WiFi Signal (which could be ...
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  • 184k
6 votes

How to show that my Internet connection is still up and active in menu bar?

Found a very simple App, Icon Ping The world icon will change color accordingly to the state of the connection: Green if we receive pong packets back from 8.8.8.8. Connection OK. Yellow if we ...
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  • 61
6 votes
Accepted

Disable Safari in OS X

You could change permissions for Safari. Open the information window on Safari (from the Finder window, with the Safari application selected, push command+I or right-click), add the desired user, and ...
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5 votes
Accepted

Spotlight does not show contents from internet!

For 10.13 only sixteen countries have this feature - http://www.apple.com/osx/feature-availability/#spotlight-suggestions I mean your country might not be in the list yet, I'm facing the same issue ...
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5 votes
Accepted

Is it possible to turn off Internet access when locking the iPhone?

Unfortunately there's no such feature in the current version of iOS (9.3), but there are some tricks you can still do now to achieve almost what you're asking for. On iOS 9 In this version of the ...
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  • 716
5 votes

Certificates not updating

After searching for hours and trying several different "fixes" which didn't work, Trevor Da Silva's solution here worked. The fix essentially consists of deleting the problematic site's certificate, ...
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  • 336
5 votes

Prevent a specific app from accessing the Internet

If it is just OneNote you want to block from using Internet you can do that in OneNote app. You can work offline on OneNote app by turning off the automatic sync settings. Click the Show ...
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  • 45.2k
5 votes

How can an iPad in airplane mode detect iOS update?

By default Airplane mode disables all wireless frequencies on your device so that you can comply with airline regulations. This means that any radio frequencies relating to cellular, Wi-Fi and ...
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  • 61.8k
5 votes
Accepted

Does Little Little Snitch 4 block connections during login?

From Little Snitch itself… Login Connections While no user is logged in or a login is in progress, Little Snitch cannot display Connection Alerts. It therefore creates suggestions for all connection ...
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  • 97.5k
4 votes
Accepted

How to show that my Internet connection is still up and active in menu bar?

I made an AppleScript program that checks the internet using ping, and if it finds that your internet is down, it will alert you. You can get it here: https://www.dropbox.com/s/j4i9keisp8r79sm/...
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  • 1,116

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