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

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1answer
26 views

How does OS X connect to other computers on the LAN?

I am behind a router, with some windows users, and I noticed that their computers show up in my finder, under shared. I never closely examined this feature, but today I decided to connect as my user ...
0
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0answers
10 views

Scripting the Disabling of Network Logins Mac OS X

I am attempting to add the ability disable the network login ability on our Macs (running 10.10.5) to my post-image script. That’s System Preferences --> Users & Groups --> Login Options --> ...
0
votes
1answer
18 views

iMac causes WiFi interference / outage

I have an Apple Airport Extreme WiFi router and three wireless clients (iPhone, MacBook Pro & iMac). The iPhone and a MacBook Pro are connected to the WiFi network and everything works fine. As ...
1
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2answers
28 views

Macbook Air ignores our strong cable signal and tries to connect to other sources

We have a Virgin Media cable provider and most of our neighbours are Sky or BT. All available networks appear in the drop-down on the top menu and indicate if they are secure or not. Ours is the ...
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0answers
17 views

Mac Mini Office Network Setup

I am setting up a 1TB Mac Mini server running OS X 11 and the latest OS X Server app in my office and have a few questions. This server will serve as a remote Xcode build machine for a small handful ...
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0answers
22 views

Resolving host…: Internet doesn't work (Chrome and Safari)

My MacBook sometimes can't connect to the internet. Chrome displays "Resolving host" but a web page doesn't appear. Safari also doesn't work. Interestingly, sometimes Google seems to work as the only ...
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0answers
6 views

WiFi Certificates Accidentally Deleted

I accidentally deleted some certificates from the Keychain Access application and I think they were somehow related to WiFi networks. Now everytime I try to join a network that uses PEAP ...
0
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0answers
12 views

I'm trying to automate connecting to a user account server after a NetInstall using Automator

In automating the deployment process for a Mac laboratory I have been unsuccessful in linking to a user account server post install. I have to do it by hand which adds lots of time to deployment. I'...
0
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1answer
20 views

How to make MBP use USB Ethernet first and when disconnected, use WI-FI?

The Wi-Fi where I work is spotty at times and spotty in certain locations (like where my cube is :-( ). I won't get into why it's still like this after months of complaining but I want to use the ...
1
vote
1answer
30 views

Power Line Adapter (PLA) network reducing Macbook Pro's battery life

I am not sure anyone has had same experience as I have. Recently bought a retina MacBook Pro and of course I was looking forward to enjoying the 10 hours of battery life that was promised. 2 months ...
0
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1answer
29 views

locat hostname is already in use on this network?

When I turned my computer on this morning this is the message I received: This computer's local hostname "----Macbook-pro.local" is already in use on this network. The name has been changed to "------...
-3
votes
1answer
30 views

How does the DHCP server choose the address range for each client?

I've set up El Capitan Server to host DHCP for my network. I've got two DHCP address ranges. The server admin interface doesn't suggest anything about how these ranges are used, and neither does the ...
1
vote
1answer
16 views

Possible to give Airport wifi extender a custom wifi name?

I have two recent Airport Extremes and a Netgear router (with wifi turned off). I'd like to connect one of the Airports to the Netgear via ethernet, and have that Airport provide a wifi network called ...
0
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1answer
17 views

Able to join captive WiFi network, but not connect to internet

I know there are similar questions on the site, but I'm not quite seeing an answer that works for my network. I work in a hospital, and we have a guest network that uses a captive portal forcing the ...
0
votes
1answer
9 views

Network TimeMachine backup errors - System keychain problem?

I've been using Time Machine to backup my MacBook Pro to my local OS X Server for years, but I recently started getting errors when attempting to backup. When running either an automatic or manual ...
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0answers
12 views

Unreasonably high ping on Mac

Here's my hardware setup : ADSL Line in --> TP-Link TD-8840T Modem --[LAN Cable]--> TP-Link TL-WR1043ND Router. I'm connected to the TL-WR1043ND via WiFi, and here are my pings : Ping to ...
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0answers
14 views

Time Capsule Extreme Proper network routing

It's time for some professional help. I love my Time Capsule Extreme, since retiring my ancient Linksys routers and setting it up as my network's Wifi Broadcast point, all the things that used to ...
0
votes
1answer
37 views

Wifi, DNS problem on MacBook Pro retina

On a Macbook Pro retina 13 2014 with El Capitan 10.11.5 I can't access websites through their domain name (google.com, bing.com, etc). I can access the internet with Google Chrome, but with others ...
0
votes
1answer
55 views

12-inch MacBook & Ethernet

I am trying to configure the network on my 12-inch MacBook. I have the following manual: But there is no Ethernet in the list. I tried to import it from my old computer, but it output the ...
3
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0answers
44 views

Constant wifi drops on El Capitan

I use a 2015 Retina MBP (13inch) and have been experiencing wifi disconnections since I have upgraded to El Capitan. I am now using 10.11.5 and the problem remains. I am experiencing wifi dropouts on ...
0
votes
1answer
11 views

How to find the process listening to the localhost on OSX?

In my Mac(10.11.5), I find a strange php server is listening to my localhost: $ curl -i localhost HTTP/1.1 200 OK Date: Mon, 11 Jul 2016 10:05:11 GMT Server: Apache/2.4.18 (Unix) PHP/5.6.23 Content-...
0
votes
1answer
16 views

Little Snitch: Does restricting address/port for an application disable future connection prompts?

I have downloaded the trial version of Little Snitch. After install, when I am prompted with connection requests, I have the option to allow or deny the connection via "Any Connection" or "Only" a ...
0
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1answer
20 views

How to access virtual machine website in iMac?

I have installed Windows Server 2012 in VirtualBox inside iMac. Now I need to access the website created in VirtualBox in iMac. can any one guide me please?
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0answers
12 views

Parallels desktop virtual machines cannot communicate when Mac has no network connection

I have two virtual machines running on Parallels desktop (v11 if that makes a difference). They are operating in Shared network mode. When I have a wireless or Bluetooth network connection they can ...
1
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0answers
30 views
+50

Filter by group with pfctl

I'm using this example on 10.10.5 but I can't get my packets filtered correctly using pfctl: dummynet out proto { tcp,udp } all group throttle pipe 1 Based on the man pfctl (see here): group &...
1
vote
1answer
24 views

Network folder in finder sidebar disappears

I have added a couple of network folders to the OS X finder sidebar as a shortcut. This is working great as long as I don't shutdown or restart the system. Once the system has been restarted they are ...
0
votes
1answer
38 views

netsh equivalent in OSX

In Windows, I enjoy the ability to toggle the "LAN" NIC between a known static IP and DHCP from the command line interface (CLI) via .bat files: netsh interface ip set address name="LAN" static 192....
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0answers
8 views

USB network connection refuses to work after waking from sleep

I use a USB LAN adapter to connect to my network. If I put the machine to sleep, the connection can't be re-established unless I reboot. System preferences shows the cable is unplugged. I've tried ...
1
vote
0answers
9 views

Access HDD connected to Time Capsule from another AP on the LAN

I have the following setup: Basically: Internet is hooked up to the Time Capsule; USB HDD is hooked up to the Time Capsule; Linksys Router is hooked up to Time Capsule by cable; Everything works ...
0
votes
0answers
19 views

set transparent proxy for java socket server

I developed software of captive portal, to redirect traffic of D-Link Router to my server port 8082 I had set iptables commands: sudo iptables -A PREROUTING -t nat -i eth1 -p tcp -m multiport --...
0
votes
0answers
15 views

Why doesn't my wifi on/off switcher shortcut work?

So i went on Automator, selected Service, and changed service receives selected to "no output". Then i dragged in Run Shell Script, and in the box i put in this code, which turns the wifi on/off, ...
1
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0answers
13 views

Network and general process priority of apps running in background?

Clarification: When I mean background, I did not mean head-less process or background tasks, I meant normal apps (like browser or terminal) with the UI not in the immediate foreground. I feel like ...
0
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0answers
15 views

How secure is apple remote desktop can it be accessed over the internet without a vpn to the local network

If you setup sharing on a computer to allow apple remote desktop is there a danger someone would be able to login and control your computer ? Or can you only connect if you are on the same local ...
0
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0answers
37 views

Setting Up IPv6 on El Capitan

I have a VM Apple Server that runs on ESXi box in OVH DC. Since OVH offers IPv6 I would like to use it also on OS X. I already use IPv6 on Windows and Linux machines. However I could not manage to ...
0
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0answers
9 views

Do Airport Base Station Timed Access Controls Apply to Clients of a Guest Network?

Suppose a network administrator set up timed access controls and then later went back and set up a guest network. Would clients of this newer guest network with relevant IP addresses then still be ...
3
votes
3answers
89 views

El Capitan froze and rebooted (Macbook Pro Retina Mid 2012)

2.3 Ghz Intel Core i7 8GB DDR3: Was running NetAdmin Pro which is monitoring my office LAN, processors consumption was at ~15 - 20%. Simultaneously I ran WiFI Explorer, 3.7% no more than 5% CPU ...
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votes
0answers
12 views

What processes are involved with maintaining the network?

I'm currently (and have been for over a year) suffering with having both a Virgin Media "Super"Hub and a MacBook, which for me and many others like me means that after a while of being on my internet ...
0
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0answers
12 views

Problem with configuring pfctl

I am trying to set up banner checking in MASSCAN. Link to GitHub page The problem is that MASSCAN contains its own TCP/IP stack separate from the system you run it on. I need to firewall the port ...
0
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0answers
22 views

Home wifi network connectivity problems

I live in a large shared house, with BT Business broadband which is then split/repeated into 3 networks across the house. I used to have no problem connecting to the main network (which is nearest my ...
0
votes
0answers
24 views

Wifi stays connected but I lose internet connection everytime mac sleeps.

I have a macbookpro and when I leave it for a while it sleeps. As soon as I wake it up, the wifi is still connected properly but I get no internet connection. I have to turn off/on the wifi port in ...
1
vote
1answer
68 views

Only HTTPS websites working otherwise I receive ERR_CONNECTION_REFUSED [duplicate]

I am facing annoying problem of only HTTPS websites working on my Mac (in all browsers). I can only visit Google, YouTube, Facebook, Yahoo etc. So far, I tried following: Websites shows error of: ...
0
votes
0answers
16 views

smbd and diskarbitrationd high CPU when writing on network-shared device

I've got a couple of Macbooks shared via network. I can easily spot them in the Finder. Let's say on Macbook A I have connected an external hard drive (My Passport 1TB) and I want to read and write ...
0
votes
1answer
19 views

MacBook Air Mid 2013 Wi-Fi MAC Address

If I change my network interface card on my MacBook Air 2013, which I assume to be my AirPort/Bluetooth card, will it change my laptop's MAC Address?
1
vote
0answers
21 views

How to forward traffic out to the internet from Ethernet through WiFi while interfaces on a different subnet? [duplicate]

On my MacBook I am connected to internet through WiFi but I also have a router for my lab connected to Ethernet port. wifi(en1): 192.168.0.4/24 with 192.168.0.1 gateway. ethernet(en0): 192.168.1....
0
votes
0answers
27 views

Diagnosing packet drops in OSX

Running netstat with -d adds dropped packets count But how does one tell where they were dropped? I know they were not dropped at ingress to protocol handling (the traffic is UDP, and netstat -s ...
0
votes
0answers
37 views

Set static network addresses for clients in OS X shared network

I'm trying to set up static network addresses for clients connected to my shared network from my Mac over Wi-Fi. (El Capitan 10.11.5) I was following this to set everything up: Configuring the ...
0
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0answers
12 views

Dynamic list of unknown shared computers appearing on wired computer

I recently setup an old Macbook Pro with OS X Server (El Capitan) and via ethernet connected it to my Airport Extreme. My network is secured with WPA2 personal and a diceware-generated password that ...
0
votes
2answers
54 views

Prevent Wake-on-LAN when other devices wake from sleep or get connected to power

TL;DR Waking OS X computer A on the network, wakes OS X computer B. Plugging in an iOS device to charge, wakes B too. Prevent this. Problem I keep my iMac in my bedroom, and just before I'm about ...
2
votes
1answer
76 views

User specific host file

I would like to add a user specific host file on my Mac (El Capitan 10.11.5) to a users home directory and have this be checked in addition to /etc/hosts when resolving domain names. I found a ...
0
votes
3answers
141 views

Airdrop is not working with my Mac

I have a Macbook air 11 inch early 2014 with Mac os X 10.11.5 installed. I can't send or receive from my mac to any other iOS device. If I want to send something to my iPhone, the iPhone never scans ...