Mac Mini - Lost IP Address
I'm trying to help my dad who just got a Mac mini. Today he was cruising the Net just fine until shortly after dinner when he tried to get online and had no luck. The old Mac (eMac) was working fine connected to a router.
The router is fine, the Comcast connection is fine. When we go into Network settings, it says that though the cable is connected to the computer, the Mac can't connect to the Net because it has no IP address. How is this even possible?
We've tried all the tricks I know, deleting the SystemConfiguration folder, creating a new location in Network prefs, etc. How can I get my dad back online?
Thanks for your help!
Mike
P.S. He called Apple Care but, alas, it was after hours. So much for the 24/7 economy.
Let's double-check the AirPort setup...
To setup AirPort for Internet connectivity:
System Preferences > Network > Show > Network Port Configurations
- Verify that an AirPort option exists. If it does not, click "New" to create one. (Note: If you are unable to create an AirPort configuration, the AirPort card in your computer either doesn't exist or it is not recognized.)
- Verify that AirPort is "On" (checked)
- Verify that AirPort is at the top of the list. If it isn't, you can drag it to the top.
Systems Preferences > Network > Show > AirPort
AirPort tab
- By default, join: Automatic
TCP/IP tab
- Configure IPv4: Using DHCP
- Configure IPv6: Automatically
Proxies tab
- Configure Proxies: Manually
- Select a proxy server to configure: <All proxies should be unchecked unless you specifically require a proxy for Internet access.>
- Exclude simple hostnames (unchecked)
- Bypass proxy settings for these Hosts & Domains: <leave blank>
- Use Passive FTP Mode (PASV) (checked)
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If you hook up your server, computers, and AEBS first and then reinstall Mac OSX Server, the server set-up will configure your network for you. You shouldn't have to set your own IPs at all...
I'm no genius at this stuff and I'm mostly playing around and experimenting, but we use file sharing, a common calendar, a family Wiki, centralized backup, and also run iTunes continuously to serve an Apple TV.
Let Apple do the work for you. See if the defaults work before tweaking it. It worked out of the box for me... Good luck.
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Thanks for visiting Apple Support Communities.
You may find some useful suggestions in these articles:
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http://support.apple.com/kb/ts4185
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Have a great day!
Jeremy -
Sync between MacBookPro and iPhone 3G does not sync properly. Calendars duplicate events but worse is that only contacts from Address book from letter T onwards sync. Any contacts on iPhone which are not on Mac are lost during sync.
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Mac mini server refuses to get DHCP address from router
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Mauricette has a point.
A server function is not designed to accept a floating or dynamic IP address. If that is the case, how do you create firewall rules that prevent those unnnecessary ports being left opened from being attacked by rogue machines in Romania and China on a hourly basis when you announce to the world that your server is available if the server IP address keep changing due to the DHCP lease change? Yes, they do have bots that do this VERY EFFICIENTLY!
By changing the very nature of your firewall rules by working with DHCP, you are opening ports you do not know to accommodate DHCP dynamic addressing, which was the reason why your Mac Mini Server stopped working in the first place. It's ok for a client, since a client isn't serving any files to any one right.
By using client based firewall rules, you are exposing your server to attacks and when they get through your Mini server, which they can if they are persistent, they get into your home network and then whatever file server services you have opened and unprotected at the time WILL BE copied by these people easily.
I have a client once who did just that. She was attacked, the hacker went through her network like a rampaging bull. They were from China. My Synology RAID server gets this attack all the time, but I have a well establish IDS system and the Synology RAID has logs that tracks attacks.
For a server setup. Use static IP and then build a strong firewall around it and protect it and never compromise.
Recently, I just noticed someone somehow hacked and broke my WPA-PSK AES passkey for one of my Wireless N network router. It was not set up with a strong password though, but thankgod I had a firewall around that so my internal networks were safe. So this teaches you that if someone wants in bad, they will get in.
Hope this helps. -
Lost sound on Mac mini (Late 2012) Yosemite 10.10.1
Hello everybody,
I lost the sound on my Mac mini. It was working just fine a few days ago. (I tried restoring it to an earlier date but no joy). I tried the troubleshooting mentioned here Troubleshooting issues with no audio from built-in speakers on Macs - Apple Support to no avail. I tried connecting external speakers (which worked in the past) but nothing. They don't show on the Audio/Output screen.
I can see the Audio icon on my screen. I can increase and decrease volume from my keyboard (through F11/F12). But no sound. I have reset the PRAM, reset the SMC (by unplugin/plugin power cord). Pretty much runnig out of options. Any advice will be welcome. Thanks.There are many possible causes for this issue. Take each of the following steps that you haven't already tried. Some may not apply to your model. Back up all data before making any changes.
1. Start with the steps recommended in this support article. Don't skip any of the steps. It's the starting point for further efforts to solve the problem.
2. Make sure you have a fully up-to-date installation of OS X.
3. If you've installed an application called "Memory Clean" or any other third-party software that is supposed to "clean" or "purge" memory automatically, remove it according to the developer's instructions and restart. You should do that even if the software is not causing the problem, because it's useless.
4. Other third-party software that has been reported to interfere with sound output includes "Boom" and "Samsung Kies." If applicable, uninstall according to the developer's instructions (not by dragging something to the Trash.)
5. If an AirPlay device is selected for sound output from iTunes (or from other applications via third-party software such as "Airfoil"), deselect it.
6. Launch the application "Audio MIDI Setup" by entering the first few letters of its name in a Spotlight search and selecting it in the results (it should be at the top.) Select Built-in Output from the list on the left. If the Mute boxes are checked, uncheck them.
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If there's no red light, the switch may still be stuck in the headphone position. Try to free it the same way.
8. Disconnect all wired peripherals except keyboard and mouse, if applicable. If more than one display is connected, disconnect all extra ones. Restart and test.
9. If you have a MacBook Air, turn off Bluetooth and restart.
10. Start up in safe mode. Don't log in; just restart as usual when the login screen appears. When you do, make sure the words "Safe Boot" do not appear in the login screen. If they do, the system is still in safe mode and sound won't work.
11. Reset the NVRAM.
12. Reset the SMC.
13. Triple-click anywhere in the line below on this page to select it:
/Library/Preferences/Audio
Right-click or control-click the highlighted line and select
Services ▹ Reveal in Finder (or just Reveal)
from the contextual menu.* A folder should open with an item selected. Move the selected item to the Trash. You may be prompted for your administrator login password. Restart the computer and empty the Trash. Recreate your settings in the Sound preference pane.
*If you don't see the contextual menu item, copy the selected text to the Clipboard by pressing the key combination command-C. In the Finder, select
Go ▹ Go to Folder...
from the menu bar and paste into the box that opens by pressing command-V. You won't see what you pasted because a line break is included. Press return.
14. Reinstall OS X after backing up all data.
15. Make a "Genius" appointment at an Apple Store. -
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