Network Configuration For Mac



Once the domain of Windows clients, more MacBooks and iMacs are finding their way onto small business and corporate networks. These networks typically funnel all Internet-bound traffic through a number of proxy servers.

When you configure a proxy server on your Mac, applications will send their network traffic through the proxy server before going to their destination. This may be required by your employer to bypass a firewall, or you may want to use a proxy to bypass geoblocking and access websites that aren’t available in your country. System PreferencesNetwork, select Wi-Fi on the left and then click on the 'minus' button beneath it. That'll get rid of your existing configuration. Then click on the 'plus' button and from the drop-down menu select Wi-Fi to set up a new connection. The Simple Network Configuration capabilities of Mac OS X automatically sets the IP address of the printer (using the APIPA protocol). However, in some cases this can cause problems and your printer cannot print even though it appears correctly in the Print Center, Printer Setup Utility, Print & Fax, Print & Scan or Printers & Scanners. If not, plug an Ethernet lead between your Mac and the router to check the network name. With Apple routers, open AirPort Utility and look in the Airport Wireless tab, or if you have a third. If you need to adjust network settings on your Mac, the quickest route is to do so through the OS X system preferences and menu extras. However, you can also make these changes - adding.

Any application that requires Internet access will need point traffic towards them. Of course, the network itself usually will not tell you to do so, so we’ll need to tell our Mac to use them.

Proxies can be configured a number of ways, depending on your needs. Desktop applications use the network settings found under System Preferences. However, anything executed from a terminal window may require alternative settings.

Terminal

Developers, DevOps, and administrators spend a lot of their time in Terminal. Unfortunately, the proxy settings set in System Preferences won’t apply here. Instead, we’ll need to set a few environment variables: http_proxy, https_proxy, and no_proxy.

Environment Variables

When to use: quick and dirty ephemeral network configuration settings. These settings only affect the Terminal window session they are used in, and exist for only as long as the session is open.

  • Execute one or both of the export commands for HTTP traffic. Most applications will work with the lowercase version, but there are edge cases that require uppercase.
  • Same as with HTTP, use one or both the examples below for HTTPS traffic.
  • Not all traffic should funnel through your network’s proxy. Typically, all local network traffic should go directly to its destination. We can enforce this by using the no_proxy environment variable.

User Profile

When to use: When you need persistent proxy configurations between Terminal windows.

  1. Open ~/.bash_profile into a text editor
  2. Add the following contents to the file, replacing my.http.proxy.server:8000 and my.https.proxy.server:8000 with the URL and port of your proxy server.
  3. Save your changes.
  4. Open a new Terminal

Every new Terminal window should now have your proxy settings configured.

Network Configuration

In order for your desktop applications, such as Safari and Chrome, for example, you will need to tell them where to forward Internet traffic to. This can be done in the Network configuration screen, under System Preferences.

  • From Launchpad., open System Preferences
  • Select Network.
  • Click the Proxies tab.
  • Under the ‘Select a protocol to configure‘ list, check the protocol you want to set the proxy for. In the example below, we’re providing settings for HTTP and HTTPS traffic.
  • Enter the hostname or IP address of the proxy server in the Web Proxy Server form field. The field next to it is where you set the proxy’s port number. If you require a username and password, enter them into the appropriate fields
  • Click OK to save your settings.

The ability to switch between different sets of network settings (locations) can be useful in circumstances such as these:

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  • You use the same type of network (such as Ethernet) at work and at home, but the settings you use at work don't allow your Mac to automatically connect to the same type of network at home.
  • Your Mac connects to more than one type of network service (such as both Wi-Fi and Ethernet) at work and at home, but at work you want your Mac to try connecting to the Ethernet network first, and at home you want your Mac to try connecting to the Wi-Fi network first. In other words, you want to set a different service order for each location.
  • Your Mac isn't connecting to your network and you want to quickly reset your network settings for testing purposes, without losing your current network settings.

In each of these examples, the Location feature of Network preferences can help.

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How to add or remove a network location

  1. Choose Apple menu () > System Preferences, then click Network.
  2. The Location pop-up menu shows the name of your currently selected set of network settings. The default location is named Automatic. Choose Edit Locations from this menu.
  3. Click the Add (+) button below the list of locations, then type a name for the new location, such as Work or Home or Mobile. (To remove a location, use the Remove (–) button below the list.)
  4. Click Done. The Location menu should now show the name of your new location. Any changes you now make to your Wi-Fi, Ethernet, or other network settings will be saved to that location when you click Apply. The network settings in your previous location remain as you left them, so you can use the Location menu to switch back at any time.
  5. Click Apply to save your settings and complete the switch from the previous location to the new one. Your Mac then automatically tries to determine the correct settings for each type of network. If you need to change the settings manually, remember to click Apply again after making your changes.

How to switch between network locations

If you have more than one location, you can use either of these methods to switch between them:

  • Use the Location pop-up menu in Network preferences, as described above. Remember to click Apply after choosing a location.
  • Or choose Apple menu > Location from the menu bar, then choose your location from the submenu.

Network Configuration For Mac Os

How to change the network service order

Network Configuration Macbook

If you're using network locations because you want each location to prefer a different network service (such as Wi-Fi or Ethernet) when connecting, follow these steps to change the service order (also known as port priority) in each location.

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  1. Choose Apple menu > System Preferences, then click Network.
  2. Use the Location menu to choose the location you want to modify.
  3. Click below the list of services, then choose Set Service Order.
  4. Drag services within the list to change their order. Your Mac will try to connect to the service at the top of the list first, then continue in descending order until a connection is successful.
    Virtual private network (VPN) connections can't be reordered, because they always take priority over other connections.
  5. Click OK, then click Apply to make the updated service order active.

How to prevent a network service from being used

Network Configuration For Mac High Sierra

By default, the location named Automatic makes all available network services (also known as ports or network interfaces) active, whether or not they are being used to connect to a network. Your Mac automatically searches these services for a network or Internet connection. For example, you might use a Wi-Fi network at home but an Ethernet network at work. Your Mac automatically detects which of these network services to use when it connects.

Network Configuration Page

If you want to make sure that your Mac doesn't use a particular network service, such as Wi-Fi, you can make that service inactive in any of your network locations:

  1. Choose Apple menu > System Preferences, then click Network.
  2. Use the Location menu to choose the location you want to modify.
  3. Click below of the list of services, then choose Make Service Inactive.
  4. Click Apply.