Wireless local area networking, also known as "Wireless Internet"; stands for "WIreless FIdelity"

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71
votes
4answers
70k views

How does the Mac choose which connection to use when both Wifi and Ethernet are connected?

When I'm connected to two networks with separate routers using Wifi and Ethernet, how does my Mac know what connection to use when I visit a website?
47
votes
8answers
41k views

Wi-Fi disconnects when I lock the mac

Everytime I lock my mac and log back in two minutes, It has disconnected the wi-fi network. Is there a setting to disable this? Model: Mac Book Pro - 15-inch, Mid 2010 I lock it by clicking 'Login ...
39
votes
3answers
26k views

How can I prevent an SSH session from hanging in OS X Terminal?

When I close my MacBook with an active SSH session in Terminal and then wake it up, the prompt goes unresponsive. In about five minutes it says Write failed: Broken pipe and terminates. This ...
39
votes
5answers
1.3m views

Is there any way to view saved wifi passwords on the iPhone?

I've previously connected to a wifi network on my iPhone but I've no way of finding out the password. So is there any way to view saved wifi passwords on the iPhone?
32
votes
6answers
59k views

How to automatically login to captive portals on OS X?

How can I automatically login to captive portals on OS X? A captive portal is used by (often not password-protected) wireless networks that present a web page as soon as you connect to them, ...
32
votes
10answers
75k views

How do you force a 5 GHz wifi connection?

Wifi networks are often set up in dual-band mode, with the same SSID served on both 2.4 GHz and 5 GHz bands. I'd like to always use the 5 GHz band (due to interference with Bluetooth and other devices ...
28
votes
4answers
19k views

Bluetooth and WiFi interfering with one another since Yosemite

Note: The only thing that changed in my setup is installing Yosemite. Since installing Yosemite, I'm having a somewhat peculiar problem: WiFi works fine, and BT works fine. But WiFi + BT working ...
22
votes
5answers
131k views

Is there an application like Connectify for Mac OS X Lion?

There is a well known app for Windows named: Connectify, used to share a wifi connection between a computer that only has wifi with other devices which requests that connection from the computer. ...
22
votes
4answers
609 views

How does iOS and OS X detect when a Wi-Fi network is a personal hotspot?

When there is a Personal Hotspot network available, it displays a chain link icon instead of the usual lock icon in the list of available networks on iOS and OS X. My question is, how does OS X ...
20
votes
2answers
16k views

Can I force Mac OS X to select certain Wifi network?

When I turn on Wifi on my MacBook, it always selects some open network. Can I somehow force the system to choose another network (it is password-protected but I have the password stored in the ...
19
votes
4answers
66k views

Why won't my MacBook Pro connect to Wi-Fi networks that use a sign-in page (captive portal)?

Some wi-fi networks require viewing and agreeing to terms before Internet access is allowed. When my MBP connects to such a network, it attempts to redirect and isn't able to connect. I tried all ...
19
votes
8answers
45k views

Wifi Keeps Dropping Macbook Pro 13in Retina Early 2015

I've tried everything I can think of. Resetting the router, changing the channel number and band. The internet connection is fine, and then just hangs for a minute or 2, then returns to normal. ...
18
votes
13answers
81k views

How can I set the priority of Wi-Fi networks on my iOS device?

I have two Wi-Fi networks in my house, one at one end of the house and one at the other. While signals crossing from one side of the house are usually audible on the other side, they are generally ...
17
votes
10answers
13k views

Start/stop internet sharing from a script?

Is there a way to start/stop internet sharing from the command line or maybe an apple script? The thing is that I move around my laptop between home and work. At one place I get wireless internet ...
16
votes
1answer
19k views

Is there a Mac OS X equivalent of the Linux iwconfig command?

I'm looking for a command line tool in Mac OS X that performs the equivalent of the iwconfig command in Linux. Example: kirkland@x220:~/src/byobu/byobu$ iwconfig wlan0 wlan0 IEEE 802.11abgn ...
16
votes
8answers
4k views

Will Time Capsule work on a college dorm's WiFi network?

My daughter is headed off to college. I'd like to send her off with a Time Capsule so she can wirelessly backup her MacBook automatically. My concern is that Time Capsule will not work properly on ...
16
votes
6answers
68k views

How do I troubleshoot my Wi-Fi connection when an exclamation mark appears?

Sometimes, when I am in a public Wi-Fi an exclamation mark appears in the greyed out Wi-Fi icon. I can connect to the Wi-Fi (I get assigned an IP address), but I cannot establish an internet ...
15
votes
2answers
43k views

Keep wi-fi connection while asleep?

Right now my MacBook Pro is set to go to sleep after 1 hour and then when I wake it back up, I have to wait for it to find/connect to Wi-Fi again. How can I maintain the Wi-Fi connection so when I ...
15
votes
15answers
50k views

Wi-Fi connection randomly disconnects on 2012 MacBook Air

My 2012 MacBook Air has problems with Wi-Fi – random disconnections, every few minutes. The problems occurred with Lion, and persist after an upgrade to Mountain Lion. It seems the Wi-Fi drops ...
15
votes
2answers
5k views

How to set custom DNS entry for a particular wifi connection

Is there a way to set custom DNS settings for a single wifi connection without affecting other connections? I use my laptop at home and work. When at work I need to type in an IP address of a local ...
15
votes
2answers
5k views

Can I connect to a specific access point by BSSID?

Is there any way to get Mac OS X to connect to a specific access point by BSSID? I have a network with the same SSID for multiple access points, and I would sometimes like to specify which specific ...
14
votes
1answer
15k views

How do I “blacklist” a wireless network on my Mac?

My home wifi network is password protected, as it should be. My neighbor's is not. Because I have password protected my network, my computer continually joins my neighbors instead of mine. I have ...
14
votes
2answers
80k views

Connecting using WiFi Protected Setup in OS X

I have a MacBook Pro, and in OS X (running Lion), I can't figure out how to connect using the WiFi Protected Setup feature of my router. When I boot into Windows (Windows 7), using Boot Camp, I have ...
12
votes
3answers
539 views

What are the risks of connecting a MacBook to an insecure wireless network?

What privacy and security risks am I exposing myself to when I connect my MacBook to an open insecure wireless network? Are there any risks that are worse or better when compared to a Windows PC ...
12
votes
4answers
12k views

Can I “Forget this Network” when the wifi network is not in range?

I have an iPod Touch that I upgraded to iOS 4 (but this an issue that also existed in iOS 3.1). When I travel, and I join a WiFi networks (e.g. hotel, etc), I don't always remember to forget the ...
12
votes
6answers
33k views

How do I share a Wi-Fi connection via a Wi-Fi hotspot?

This question is an extension of this question. While my answer did answer the question, there was one part that wasn't answered: how do I share a Wi-Fi connection via a Wi-Fi hotspot?
11
votes
7answers
7k views

What tools are there for measuring Macbook wireless strength?

I often have trouble connecting to wifi with my MacBook Pro. To help identify the problem, I was wondering if there were any tools for measuring wireless signal strength.
11
votes
3answers
8k views

Does turning on WiFi on iPhone use battery?

Does turning on WiFi (without connecting to any wireless network) use battery?
11
votes
8answers
164k views

Wifi Won't Connect; Connection Timeout (Mac)

I'm having issues with my macbook pro OS X 10.7.5. It used to connect to the wifi router (D-Link N300, DIR=615) no problems. But for the past several weeks, I haven't been able to at all. What pops ...
11
votes
6answers
16k views

How to enable faster WiFi Roaming with Mac OS X & Airport base stations

How can I change the way Macbooks roam on the WiFi network? I would like to speedup the roaming of Macs (and maybe other devices). Is there a setting on the Airport base stations or in Mac OS to ...
11
votes
3answers
17k views

How to share internet with WPA/WPA2 security?

I'm using a macmini with Mac OS X Snow Leopard to share a cable internet connection. Sharing works fine except that security is limited to 40/128 bit WEP that is insecure (can be hacked in minutes). ...
11
votes
2answers
42k views

How to use WiFi and Ethernet at the same time

Brief Description: I need my Ethernet card (en0) to see all traffic under 192.168.2.xxx. However I also need to use WiFi card (en1) for all other traffic. OS: OS X Lion I am using a separate ...
11
votes
9answers
62k views

How can I mirror my iPad display wirelessly?

I am looking to display my iPad screen wirelessly to an external display to demo applications. I found this video showing exactly what I want to do with an iPhone but no explanation as to what the ...
11
votes
6answers
41k views

Have to reconnect to WiFi every time computer goes to sleep

I recently purchased a new MacBook Air (2011) with Lion preinstalled. There is this persistent and incredibly annoying problem that is occurring with the WiFi. Every time I close the lid or let the ...
11
votes
4answers
8k views

Can a Mac's airport card run 802.11 N, G, B or A only?

Occasionally it's nice to hard code a wired connection network port to not auto negotiate and force things to be 100 half duplex even though a higher speed is configured and negotiable on the switch. ...
11
votes
2answers
11k views

Workaround for Mavericks Bluetooth/Wi-Fi interference?

I have this problem: I normally have Bluetooth enabled so I can make use of my speaker system and Magic Trackpad on my mid-2012 11" MacBook Air (2.0 GHz i7, 8GB). However, when it's enabled, Wi-Fi ...
11
votes
6answers
20k views

Change Mac OS X Wireless Card Country Code

I have problem connecting to a wireless router using Mac OS X which is on channel 13. This is because there is some other router nearby which is broadcasting the US country code. The only way around ...
10
votes
6answers
10k views

Why does iPhone Maps app sometimes ask to enable Wi-Fi for “accuracy”, even though Location Services (GPS) is enabled?

Background: I have an iPhone 3GS with iOS 5.1, and a 3G data plan that I keep enabled. I also keep "Location Services" (GPS) always on, since I use applications that take advantage of it. However, I ...
10
votes
5answers
9k views

To let a Mac automatically use Wifi and Ethernet to double the connection speed?

I am staying at a hotel, and for some reason, I think they limit each Wifi connection to 95 kbyte / s. So that is roughly 1.2 Mbps... and since I have 18 Mbps at home, I am using a speed that is less ...
10
votes
1answer
24k views

Prevent my Mac from connecting to an unsecure Wi-Fi network?

How can I prevent my Macbook from connecting to non-secure wireless networks? I've ticked the "Ask to join new networks" option and removed the offending network from the Preferred Networks list in ...
10
votes
1answer
213k views

Is it possible to connect an iPhone/iPad via WiFi Protected Setup (WPS)?

I was wondering if anyone know if it is possible to connect your iPhone/iPad to a router via WiFi Protected Setup (WPS)? I would like to bypass entering my password on my iOS device and speed pairing ...
10
votes
5answers
11k views

Why does my Mac take a long time (30+ seconds) to find my home wifi?

I have a retina MacBook Pro 15" running Mac OS X 10.9.4. When I wake it from sleep at work, it's connected to the wifi network before I've even entered my password. But at home, with a Airport Extreme ...
10
votes
8answers
81k views

How can I wirelessly transfer photos from my iPhone to my computer without using Photostream?

Sometimes I take a quick photo with my iPhone's camera and I need to get it onto my iMac. I'd love to do this wirelessly (like syncing and everything else). I'm aware that iCloud's Photostream should ...
10
votes
3answers
4k views

How to create an infrastructure Wi-Fi network from Yosemite with no Internet connection? [duplicate]

How to create a Wi-Fi hotspot (infrastructure network, not ad-hoc) on a Mac without any Internet connection? In Windows, we can easily create an infrastructure wifi LAN hotspot with: netsh wlan set ...
10
votes
2answers
12k views

Multiple simultaneous wifi connections

With the release of airdrop it is apparent that my WiFi network card is capable of making more than one network connection. Are there any apps, documentation, command line tools, etc. for managing ...
9
votes
2answers
26k views

How to tell if Macbook is using 802.11ac

I just got a new Macbook Air and a new Airport Extreme, both of which support 802.11ac. Is there an easy way to tell if my Macbook Air is connecting to the Airport Extreme via 802.11ac? Relatedly, ...
9
votes
5answers
4k views

How to change network connection order?

I have multiple network access in the same area. How can I reorder the priority to which the connections are made ?
9
votes
3answers
12k views

How do I tell an iOS device there's no internet connection on the Wifi?

I've setup a WiFi network to allow iOS devices (such as my iPad) to connect to other devices on the local network, but I want to be able to use the 3G functionality on my iPad at the same time to ...
9
votes
4answers
37k views

Airdrop: Bluetooth or WiFi?

How does Airdrop work? I thought it is just bluetooth, but I am starting to doubt that now. Whenever I turn Airdrop on, my WiFi and Bluetooth are automatically turned on. If I turn the WiFi off, and ...
9
votes
1answer
8k views

How to disconnect from wifi on Mac OS X

How does one disconnect from a wifi hotspot on Mac OS X? The only way I found how is to Turn Wi-Fi off then back on and finally select a different access point... Surely there must be a better way.