Questions about configuring, troubleshooting or using connections that one device uses to talk to another.

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7
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2answers
724 views

“Airplane Mode” in OS X. Alternative command for `rfkill`?

This question is an exact duplicate of this post from superuser.exchange.com. I believe this is a valid question for both of sites and hope I am not (if any) violating stackexchange policies. ...
7
votes
3answers
8k views

Why is my host name wrong at the Terminal prompt when connected to a public WiFi network?

For three days straight, I have connected to the public WiFi network at my local library. Each day, I have seen a different prompt in Terminal. Here are some of the prompts I've seen: zp-pc:~ ...
7
votes
1answer
2k views

Change Network location from terminal

I have a two locations set up on my macBook. One for normal use and another for when I use a proxy, which I start from the command line. It would be very useful for me to be able to switch network ...
7
votes
5answers
76k 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 ...
7
votes
4answers
3k views

How can I get the exact URLs/requests that a program is trying to connect to?

I currently use Little Snitch to control network traffic on my Macbook Pro, and see what my apps are connecting to. Unfortunately, Little Snitch only shows you the hostname that an app is connecting ...
7
votes
2answers
31k views

How to block internet traffic of an application?

Little Snitch can block internet traffic of a particular app. Can I do something similar without (paying) Little Snitch?
7
votes
1answer
183k views

What, precisely, does “reset network settings” do on an iPhone?

I use "internet sharing" on my Mac, but lately I've been having trouble connecting my iPhone 5 to the resulting WiFi network. I've read advice online to do Settings -> General -> Reset -> ...
7
votes
4answers
11k views

How can I have my Mac mount a network drive when an application launches?

I outsourced the storage for my "iTunes Media", "iTunes Music" and "Mobile Applications" using symlinks onto a network drive. I didn't outsource the complete media library because of performance ...
7
votes
2answers
768 views

“Mount” network share as a volume via SSH?

There is a remote server that I can connect to only via SSH, and storage space have been allocated for me in that server. Is there a software that lets me "mount" a network share via SSH so that I ...
7
votes
3answers
26k views

Since upgrading to OS X Mavericks, I can't open any files on a SMB share from my Windows 8.1 PC

I have a PC with Windows 8.1 and a Mac with Mavericks. I have a folder on the Mac that is shared with the PC. When I'm on the PC and I try to open a file that is shared by the Mac, such as an ISO file ...
7
votes
5answers
7k views

How can I pair my Magic Trackpad with multiple Macs?

I have a Magic Trackpad that I'm using with my iMac. Everything works great, but I would also like to use the trackpad with my MacBook. For some reason, it seems that I can only pair the trackpad ...
7
votes
3answers
6k views

Network stops working, with “Can't Assign Requested Address”

On OS X 10.9 (but no prior version), every now and then, I start getting strange network errors. I can still ping, but anything that requires actual content (like a web page) completely stops. For ...
7
votes
3answers
184 views

Distinctive slowdown across browsers on 10.9.1

I've noticed a strange pattern of delays when trying to fetch websites; the behavior seems extremely distinctive, and is easy for me to reproduce so I'm fairly confident of most of the details below. ...
7
votes
4answers
670 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
1answer
3k views

System proxy settings inaccessible by Java, Firefox, VMware Fusion, etc.?

I'm stuck on what appears to be an issue with the accessibility of system proxy settings by other programs. I came across this problem while trying (and failing) to run Processing-generated Java ...
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
6answers
24k views

What OS X signal strength test apps exist to measure Wi-Fi networking?

Is there a way I can get more details on the strength of my Wi-Fi signal? I'm looking for either an app I can download or a system command that I can run in terminal that will expose the noise of ...
6
votes
3answers
2k views

How do I find out the MAC address of my iPad?

I have a new iPad and MAC address filtering on my home wifi network. How do I figure out the MAC address of my iPad?
6
votes
2answers
4k views

What is the preferred method of command line domain name lookup (DNS)?

What command line command do I use to lookup a domain address? When looking at the man pages for nslookup and dig I can see a section saying that these utilities do not use the Mac OS methods of ...
6
votes
1answer
345 views

Is it possible that some hacker is logged in to my computer?

When I type w at the terminal I see myself logged in two times. What are console and s000? Is it possible that one of these neos is actually somebody else?
6
votes
3answers
929 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
24k 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
4answers
3k views

Disconnect from wifi network in Lion, while remembering the connection.

I would like to disconnect from my wifi network on OS X Lion. I do not want to forget the network nor turn wifi off. I just want to be able to connect and disconnect at will. - How do I do this?
6
votes
4answers
6k views

Equivalent of airodump-ng for Max OS X

Is there any equivalent of airodump-ng for Mac OS X (it only runs on linux), providing an overview of the current wireless traffic on nearby Access Points, i.e: number of captured data packets list ...
6
votes
1answer
4k views

How to control AirPort wireless radio from the command line?

I want to know how to control (specifically turn off) the networking (specifically AirPort - I want to turn off the radio) from the command line (specifically from bash in Terminal.app, being run by ...
6
votes
1answer
154 views

Automatically assign DNS

How do I ensure that the DNS is being set by the network? On Windows I would check here and make sure that Obtain DNS server address automatically was selected:
6
votes
5answers
915 views

What is a good Time Capsule substitute?

I am looking for something similar to Time Capsule, but I am really not interested in the wireless router capabilities. Can you suggest hardware which has the same good qualities (size, silent ...
6
votes
1answer
16k views

How can I turn off my Time Capsule's wireless router?

I have a useful wireless network, and then my Time Capsule's wireless network, which overpowers the other network when the computer is next to it. I don't know if it's misconfigured, but the Time ...
6
votes
3answers
3k views

Which ports does the Messages app for OS X use?

If someone has a list of the ports that Messages uses I would appreciate that answer here. Extra votes and thanks for providing a reference. I have searched the knowledgebase and found this, but it ...
6
votes
5answers
20k views

How do I unset an IP address set with ifconfig?

I recently used ifconfig en1 1.2.3.4 to set the IP address of a network interface (specifically, the wireless card) on a Mac… How can I remove/unset it? Using the graphical network configuration tool ...
6
votes
2answers
6k 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 ...
6
votes
5answers
4k views

Why doesn't Airport reconnect after sleep or shutdown?

I have a MacBook Pro (2.4 GHz Core 2 Duo, running OS X 10.6.8) that does not reconnect to its stored WiFi network after it restarts or goes to sleep. To reconnect, I need to go into System Preferences ...
6
votes
5answers
1k views

Is there a way to use different network connections for different apps

At work we have a firewall that prevents certain outbound connections. But I also have a Clear wireless personal hotspot. I would like to use the work connection for normal requests but for certain ...
6
votes
6answers
6k views

Print from iPad without AirPrint or Wi-Fi

Consider the following configuration I have a Wi-Fi iPad without 3G support. I also have an HP printer that doesn't not have Wi-Fi capabilities. My printer supports USB. I am planning to buy a 3G ...
6
votes
1answer
6k views

Time Machine — ‘Sparsebundle already in use’ error

A few days ago, Time Machine on my Mac reported an error: ‘Sparsebundle already in use’. Manual unmount of the Time Capsule didn't help, nor a reboot of my machine. Removing and re-selecting my Time ...
6
votes
1answer
3k views

Unkown process listening at port 8080

The problem: something is listening on port 8080 If I load the page with Safari I get a blank page (page is white but "Develop → Show Page Source" is greyed out) If I telnet to port 8080 I get ...
6
votes
2answers
3k views

What are “nwnode:” URLs, and why did Lion break them?

After installing OS X 10.7, Dropbox presented the following error upon loading: "URLs with the type "nwnode:" are not supported". I also got this error from Path Finder (although I don't know what I ...
6
votes
1answer
4k views

Natively written packet sniffer / inspector for OS X

I am looking for a packet sniffer / inspector which runs natively on OS X (Cocoa) and not with some sort of compatibility layer like X. Ideally I am looking for an application with the following ...
6
votes
2answers
2k views

How can I get Snow Leopard to properly reconnect to my Windows network drives after it goes to sleep?

My mac goes to sleep. It wakes up. The volumes mounted to a Windows server in my house all work. I can see pictures and listen to music. Until I can't. After two or three sleep/wake cycles, I can't ...
6
votes
2answers
2k views

Internet Sharing handing out wrong DNS server address

I'm using a MacBook Pro with OS X Mavericks 10.9.2. It connects to the internet via a USB 3G dongle, and I want to share that internet connection via wifi. However, on devices that connect to the ...
6
votes
2answers
882 views

How should I use VPN on a Mac to prevent compromise before the VPN starts?

As most experienced users will have heard, using a Mac in a public untrusted Wi-Fi can be potentially harmful. A tool like Firesheep1 has made it very easy to intercept unencrypted communication. ...
6
votes
1answer
161 views

Software recommendation: Command line network analyser that shows owning process

I'm looking for something that is a mix of tcpdump, lsof, and netstat. I want to be able to filter like tcpdump, but have an additional column showing the process ID. At the end I'd like to be able ...
6
votes
2answers
1k views

Per application VPN settings

I use a VPN tunnel to connect to a remote network on Snow Leopard. I set it up with the system settings for VPN and it works fine. Unfortunately, the VPN tunnel is used for all connections. Some ports ...
6
votes
1answer
391 views

How do I emulate Internet Sharing from the command line?

I'm trying to set up my Macbook Air to share an OpenVPN connection for use while I'm on the road and don't want my iOS traffic to go over the open Internet. Sadly, Mountain Lion's Internet Sharing ...
6
votes
1answer
1k views

Mac renames itself automatically

I've got a handleful of macs (all with unique names) and on occasion it prompt a notice about saying another computer on the network as this name and adds a (2) or (3) to my mac. There are no other ...
6
votes
3answers
36k views

Share internet connection from a PC to an iPhone through the USB cable

In the office where I'm working now, my network carrier has very poor reception, so my iPhone 4 cannot access the internet reliably. I have a pc running Windows XP SP3 that is connected to internet ...
5
votes
3answers
349 views

Open ports. Safe?

My friend is currently running the default firewall with "Block all incoming connection" (except the basic ones like 80). I just scanned his mac for open ports and I found the following: Open TCP ...
5
votes
3answers
2k views

Does OS X have a builtin DHCPv6 client?

Upon testing a within a standalone network with just a DHCPv6 server on it and several client computers with different operating systems, OS X 10.7.4 fails to automatically obtain an IPv6 address from ...
5
votes
5answers
720 views

Is there any network monitor software with a notification area icon?

I often use my laptop in the subway / office buildings where internet connection may be laggy / absent for some period of time. Is there any network monitorying software that can constantly monitor my ...
5
votes
3answers
7k views

Unexpected interfaces in ifconfig

In the middle of installing a tool called mrtg, I bailed out from a perl script to set various configuration parameters for use of snmp because it became clear that I had no idea what I was doing. I ...