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

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30
votes
3answers
16k 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?
21
votes
3answers
338k 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?
19
votes
5answers
10k 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 ...
16
votes
5answers
80k 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. ...
15
votes
2answers
8k 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 ...
15
votes
2answers
6k 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 ...
15
votes
8answers
3k 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 ...
14
votes
6answers
6k 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 ...
14
votes
15answers
34k 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 ...
14
votes
6answers
35k 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 ...
12
votes
3answers
443 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
3answers
13k 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, ...
12
votes
4answers
4k 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
8answers
45k 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
3answers
13k 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
23k 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 ...
11
votes
1answer
33k 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 ...
11
votes
1answer
3k 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 ...
10
votes
7answers
5k 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.
10
votes
5answers
4k 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
6answers
27k 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 ...
9
votes
3answers
3k views

Does turning on WiFi on iPhone use battery?

Does turning on WiFi (without connecting to any wireless network) use battery?
9
votes
6answers
6k 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 ...
9
votes
4answers
6k 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 ...
9
votes
2answers
3k views

Internet stops working frequently on OS X Lion

After upgrading to Lion, I started experiencing this issue: Internet stops working frequently. - I open Safari and browse for some time - Suddenly I can't open any sites; Internet will stop ...
9
votes
4answers
12k 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?
9
votes
2answers
6k views

Can iOS 5 Wi-fi sync be used over VPN?

With iTunes Wi-fi sync in iOS 5, it seems that the host iTunes machine and the iOS device have to be on the same LAN. Is it possible to circumvent that requirement by accessing the user's LAN (with ...
8
votes
8answers
74k 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 ...
8
votes
2answers
21k views

Can I use an old iPhone as a wifi-only device?

I have an AT&T (GSM) iPhone 4. If I were to upgrade to an iPhone 5, could I simply pop the SIM out of my iPhone 4 and continue using it on wifi only? Would I also need to get the SIM deactivated ...
8
votes
7answers
27k 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 ...
8
votes
5answers
60k views

Share iPhone WIFI with computer over USB?

Due to a water leakage, we had to move offices temporarily. In our temp offices, we have WIFI network, but not cabled network (yet). Since my computer doesn't have WIFI (it's a stationary desktop) I ...
8
votes
3answers
2k 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 ...
8
votes
3answers
2k views

OS X status bar wifi icon - meaning of bars?

On my MacBook Air, MacBook Pro and Mac mini, the status bar includes the standard "radiating sector" wifi icon which you can click on to select a wifi network, or Option-click on to see additional ...
8
votes
2answers
2k views

Is it possible to remember a wifi network in iOS 6 without automatically connecting to it?

Once in a while I need to use my iPhone 4 for work related tasks that require a lot of bandwidth. When doing this I will connect to the wireless network at work, do what I need to do, and then ...
8
votes
2answers
1k views

Internet sharing through WiFi disconnects

I am currently using an iMac running Lion and am having problems sharing my internet through WiFi. The iMac is connected to the internet through ethernet and I share that connection through WiFi to ...
7
votes
5answers
2k 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 ?
7
votes
1answer
584 views

Access Airport signal data

I want to be able to write the current list of Wifi networks in airport, and their respective strengths, to a file. I would like to use some sort of bash script to do this, but I am unsure how to ...
7
votes
3answers
10k views

Can I use 2 iPhones as walkie talkie? (without internet!)

I want to use 2 (or more) iPhones as walkie talkie (i.e. they talk each other without needing internet/voice call). Of course this should work with wifi, because it doesn't make much sense a to have ...
7
votes
1answer
78k 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 ...
7
votes
2answers
2k views

MacBook Pro Encountering High Latency

I'm encountering latency trouble with my 15" 2011 Macbook Pro (running 10.6.7) when on an 802.11n (5GHz) wireless network hosted by a Time Capsule (version 7.5.2). When I ping the Time Capsule, the ...
7
votes
3answers
50k views

What to do about broken WiFi on iPhone 4S after iOS 7 update?

Several iPhone 4S owners have noticed a problem with their WiFi not working after upgrading to iOS 7. It appears to be both a software problem (our phones have been working for nearly two years with ...
7
votes
1answer
4k views

MacBook Pro WiFi keeps shutting down for no apparent reason

I've got quite a problem with my Macbook Pro (late 2010, running OS X Lion 10.7.3). Since a few days ago, my wifi frequently keeps shutting down. It starts by the network not being functional and then ...
7
votes
4answers
558 views

iOS6 on iPod Touch (4) no Wi-FI LAN, when there is no Internet?

I got a question of one of my customers: They are experiencing problems when connecting a iPod to a WIFI LAN without Internet connection. Basically, the iPod connects, gets a IP from DHCP, but then ...
7
votes
4answers
1k views

Wifi drops when screen is locked

I have a Mid 2010 MPB, running 10.7.1. Ever since I upgraded to Lion, I have noticed that wifi connections that require 802.1x authentication are dropping whenever I lock the screen. The connections ...
6
votes
3answers
738 views

A utility for tuning your WiFi network?

Is there an app available to help tune Wi-Fi network settings? My local air space is starting to get congested and I want to make sure I'm using the optimal channel and settings on my router to avoid ...
6
votes
2answers
4k 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 ...
6
votes
3answers
4k views

Send short message to another Mac on the LAN

I am looking for an OS X application that will allow me to send a short message (URL, etc.) to another Mac running on the same LAN or WiFi. I have two Macs at work, my company iMac and personal ...
6
votes
2answers
20k 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 ...
6
votes
3answers
8k views

How to fix iMac losing Wi-Fi connection again and again?

My iMac loses its Wifi connection from minute to minute. To make it active again, I have to run "Assist Me..." from the Network preferences panel. This is really, really annoying. Does anyone ...
6
votes
1answer
3k 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 ...