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

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6
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2answers
2k views

“Accept incoming network connections” issue

Due to some graphic and/or code based changes, within programs like Dropbox, iTunes, jDownloader etc. (but mostly Java-based applications), the built-in firewall keeps asking for verification. ...
6
votes
2answers
2k views

Redirect traffic using PF along with Internet Sharing

The short version: How do I redirect all traffic from en2 port 80/443 to 127.0.0.1:8080 when I have enabled Internet Sharing in OS X Mountain Lion (10.8)? Some background: I am doing a master ...
6
votes
2answers
2k 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
2answers
216 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
1answer
397 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
2k 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
0answers
990 views

Mac Pro loses network connection after wake from sleep since Yosemite upgrade

I have a really strange issue since i updated to Yosemite. When i wake up my 2012 Mac Pro, the network connection is totally lost. Output from dmesg (sorry, couldn't copy/paste at this time): - Nic ...
6
votes
3answers
44k 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
428 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
3k 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
763 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
2answers
2k views

Is there a fast way to change proxy setting?

On my laptop I usually have a ssh connection open and use the remote machine as a proxy server just so that all my network traffic is over ssh. I know that it's hopeless and we're all doomed, but it ...
5
votes
3answers
3k views

Internet Sharing stuck on after 10.7.3 update

I use Internet Sharing at work to create a local WiFi network (sharing the GigE connection) for my various iOS and tablet devices to connect through. After the 10.7.3 update, I cannot turn sharing off ...
5
votes
3answers
382 views

Is it possible for two users to remotely log in to a Mac simultaneously?

Can two users share a Mac remotely? What software would be used? I'm wondering if this is a viable idea for two developers to share a Mac for app development.
5
votes
3answers
2k views

Ping on Mavericks on late 2013 MacBook Pro slow and variable compared to Windows

I had a couple of issues connecting to an SMB share last night so started using ping to test connectivity. At that point I noticed the ping was very slow and variable - my Windows laptop shows ...
5
votes
2answers
284 views

How to resolve dropping wifi issue since Yosemite upgrade?

As of today I experience random wifi connection drops on my MacBook Air 2012 that force me to reselect the network every ten minutes. The only recent change to the system was an upgrade to Yosemite. A ...
5
votes
1answer
574 views

iChat sends out connections to an IP address when configuring camera and mic settings

Using LittleSnitch I noticed that Messages (iChat) tries to connect to 17.154.239.222 over udp when I open the audio and video preferences for the application. Apple owns that IP address but does ...
5
votes
5answers
7k views

how to use ipad to access webserver on macbook air

my webserver software is nginx which runs very well on macbook air using mac os x 10.7.5 when i go to http://myapp.localhost on my macbook air, i can access my website perfectly which is running on ...
5
votes
5answers
75k views

Will an Airport Express extend the Wi-Fi of another-non Apple Access Point?

My colleague has a cheap Cisco Access Point on another floor. The wireless is very spotty. He is using a Mac Pro. Will an Airport Express work to extend this network?
5
votes
2answers
2k views

How can I use Wireshark on a MacBook Air?

I have a new MacBook Air. I would like to run Wireshark on it. But when I choose capture in Wireshark there is no interfaces to capture from. Doesn't Wireshark have support for the MacBook Air WiFi ...
5
votes
2answers
1k views

How do I prevent OS X 10.8 from autoconnecting to a specific wireless network?

I have two wireless networks at home. I want my Mac to autoconnect to one of them, but not the other. However, I do not want to remove the other network from my preferred list, since I want to keep ...
5
votes
1answer
185 views

What is the fastest connection between two MacBooks

What is the fastest way to connect two MacBooks? In my case I want to connect an MacBook Air (2011) with a Retina MacBookPro and use Screen Sharing. Options I'm thinking of: Thunderbolt/Ethernet ...
5
votes
4answers
6k views

Apple TV works with my iPhone but not with my PC on the same wireless network

I have: Windows 7 PC with latest version of iTunes connected to my network (wired). Windows Firewall is turned off. Apple TV (2nd generation) connected to my network (wireless) iPhone connected to ...
5
votes
2answers
2k views

Use a network Time Machine drive locally

I typically backup over a network to a networked hard drive on another machine. For some unknown reason, backups tend to get incredibly slow over the network (the first few backups work fine and ...
5
votes
1answer
2k views

Internet sharing without DHCP

I'm trying to setup my iMac running 10.6 to be a wireless bridge. I have it working, but I need to disable DHCP and let my network's DHCP server provide an IP for the connected device(s). I can't seem ...
5
votes
1answer
2k views

How does Back To My Mac work without UPnP or NAT-PMP?

Back To My Mac (BTMM) used to require UPnP or NAT-PMP on your router to work, but at some point this changed and it can work (albeit slowly) without those. BTMM (usually?) works by setting up an ...
5
votes
4answers
5k views

Trouble browsing Windows network printers from Mac

In the "Add Printer" dialog Windows section, there are no printers showing up, even though there are several in the office. I think this might be because my Mac is not "logged onto" the Windows ...
5
votes
2answers
11k views

AirPort Express and Extreme Wi-Fi strength comparison

I'm about to buy an AirPort model but I'm not sure if there is any difference in terms of signal strength and range. There have been comparisons between these two models in the past but I don't think ...
5
votes
1answer
2k views

How can I force Mac OS X 10.9 to see the ethernet port of my hub (Asix AX88179)?

I already downloaded (and installed !) the latest file from ASIX.com, which is the latest to this day, but System Information does not list the port as being available when I connect the USB 3 Hub ...
5
votes
3answers
3k views

Time Capsule Interface List

Per my other question on monitoring network throughput, I now have a series of graphs, some of which are distinctly non-obvious as to what they are. Is there documentation on what every interface on ...
5
votes
3answers
142 views

Where does MacOS store remembered Wi-Fi Names?

My mac knows about 50-100 different Wi-Fi network names. I'd like to know where they are remembered, I can't find it. I've searched. I understand that there is a GUI for editing this information, but ...
5
votes
2answers
4k views

Permanently mapping a network drive on MacBook Pro?

THE QUESTIONS: How can I make my MacBook Pro automatically mount a network share when it wakes up? How can I make sure that when it is mounted it is mapped to the same path (/Volumes...) MY SETUP: ...
5
votes
4answers
3k views

Why is my iPad causing WiFi interference?

I have a 3rd gen 32GB iPad with a 3G/LTE connectivity (and the latest software) and let me be clear from the start - the WiFi is working perfectly fine for me and I've had no problems with it ...
5
votes
1answer
3k views

How to get an iPad to switch automatically to the strongest network?

I work in an office that has 3 WiFi networks, the strength obviously depending on where you are in the building. All 3 networks have been set up on my iPad 3. I often move around in the office, but ...
5
votes
2answers
2k views

Network Link Conditioner not working

I am a web developer and I recently found out about Network Link Conditioner, but I can't get it to work. It appears to be working, but when I load anything in a browser, the speed is not changed, ...
5
votes
1answer
985 views

Is there a OS X equivalent for iproute2?

I am searching a command line tool collection like iproute2 on Linux. Network Utility is OK, but I would like it on the command line.
5
votes
2answers
4k views

Thunderbolt Displays' ethernet adapter breaks MacBook DHCP/MAC Address reservations

We have deployed Thunderbolt Displays in my organization, which is almost entirely Mac-based. As you may already know, Thunderbolt Displays have internal Ethernet adapters which is very convenient in ...
5
votes
1answer
1k views

Why does Lion mount a network volume twice at login?

I just set up a new NAS at home and created a few volumes on it, along with enabling access to those volumes (i.e. enabling the Mac File Service on the NAS), and creating an account for myself. On ...
5
votes
4answers
6k views

A Mac OS X VPN client that can import a .VPN file

I have a .vpn file that I use on Windows with the Shrew Soft VPN Client that has the connection details (excluding the username and password). Is there an equivalent client for Mac OS X that will ...
5
votes
3answers
7k views

How to fix very slow server performance on OS X Lion?

I have a 2008 Mac Pro (MacPro3.1 -- dual 3 GHz quad-core Xeon, 6GB memory) running Lion (10.7.3) that I'm using for as a server for a business (files, print, media, etc.) as well as a development ...
5
votes
3answers
9k views

Solution for Airprint with a router that is not Bonjour compatible

I'm trying to troubleshoot remotely for my mother and her iPad. I sent her a Canon Airprint-compatible printer which is visible/usable on her wireless network by a desktop PC and a netbook, but not ...
5
votes
2answers
908 views

Internet Sharing failing on Mac OS X Lion Server

Before I upgraded to Lion Server, I was running 10.7.1 I setup Internet Sharing in the preferences (Share from Ethernet 1 to Ethernet 2). After the upgrade, sharing doesn't work unless I take the ...
5
votes
1answer
200 views

Resources for a Mac-only office

What are some good resources about running a small office (25 or so computers) with Mac computers only (though perhaps with a Windows or Linux/Unix file server)? In other words, what information and ...
5
votes
2answers
120 views

Encrypt Time Machine backup data sent over the network

I have three relevant machines: An iMac running 10.10 as my Time Machine server. A MacBook Pro running 10.10, which backs up to the server. Backup encryption is enabled. A PowerBook G4 running ...
5
votes
0answers
125 views

PacketFilter on OS X preserve destination address for sshuttle

There is a cool utility out there called sshuttle (https://github.com/apenwarr/sshuttle). It has depended on ipfw to forward packets in the past. It appears that ipfw is mostly broken in Mavericks ...
5
votes
1answer
134 views

How to increase the amount of time the wifi waits before timing out a connection?

I'm currently traveling abroad. Sometimes when connecting to a very old or a heavily used router, the connection will timeout after 2-3 seconds. I think some of these routers just need more time to ...
5
votes
3answers
4k views

How to add some additional DNS search domains without ignoring the DHCP ones?

I just want to add my own list of Search Domains but without overriding the ones returned by the DHCP? As anyone would imagine I already tried to add them to Network > Advanced > DNS but adding them ...
5
votes
1answer
990 views

Lion Server DHCP randomly loses settings and reverts to defaults

I’ve been trying to set up Lion Server on a Mac Pro with it acting as the router/gateway/firewall/DNS/NAT and DHCP. I’ve been trying to setup an internal-only network named mycompany.something. After ...
5
votes
1answer
1k views

Is there a way to configure Mac OS X Snow Leopard server as an Internet gateway with bandwidth tracking per user?

I'd like to use Mac OS X 10.6.7 Snow Leopard Server as an Internet gateway. My router would connect to the Internet facing NIC on my Mac Mini server and the internal NIC would connect to a WiFi ...
4
votes
4answers
3k views

Wi-Fi Diagnostics app not found

After reading this CNet article I was pretty excited to have a tool that monitors my wireless network since I'm in the process of setting it up well. Wi-fi Diagnostics is said to be in the ...