- Jan 05, 2021 SSH or Secure SHell is an encrypted connection protocol which is used to connect to the command line interface of a remote machine. Mac OS features a built-in SSH client called Terminal which allows you to quickly and easily connect to a server. In this article, we'll outline how to SSH to a server using the Terminal program on OS X Mac.
- Then, add your private key to ssh-agent with: ssh-add /.ssh/idrsa Copy your public SSH key. Next, you need to copy your public SSH key to the clipboard. For Linux or Mac, print the contents of your public key to the console with: cat /.ssh/idrsa.pub # Linux. Then highlight and copy the output. Or for Windows, simply run: clip ssh/id.
Sep 05, 2009 Start or restart the Remote Login (SSH) Service under System Preference / Sharing pane on Mac OS X. The SSH daemon should run on the remote machine as well! See 'man ssh''man sshconfig' and 'man sshdconfig' for the complete explanation. 3 Simple Steps to X11 Forward on Mac OS X. This method (encrypt-then-mac) can also be used by SSH when supported on both the client and server. Update: RFC 7366 defines an extention to TLS that also allows to use 'encrypt then mac'. What will change for our SSH-sessions with this new config? Before activating the config-changes, this is an SSH-session (on a Cisco 3560 with IOS 15.0(2)SE5).
-->This guide describes how to use Pair to Mac to connect Visual Studio 2019to a Mac build host. The same instructions apply to Visual Studio 2017. Firefox browser online.
Overview
Mac Ssh Config File Location
Building native iOS applications requires access to Apple's build tools,which only run on a Mac. Because of this, Visual Studio 2019 must connect toa network-accessible Mac to build Xamarin.iOS applications.
Visual Studio 2019's Pair to Mac feature discovers, connects to,authenticates with, and remembers Mac build hosts so that Windows-basediOS developers can work productively.
Pair to Mac enables the following development workflow:
Developers can write Xamarin.iOS code in Visual Studio 2019.
Visual Studio 2019 opens a network connection to a Mac build host anduses the build tools on that machine to compile and sign the iOS app.
There is no need to run a separate application on the Mac – VisualStudio 2019 invokes Mac builds securely over SSH.
Visual Studio 2019 is notified of changes as soon as they happen. Forexample, when an iOS device is plugged in to the Mac or becomes availableon the network, the iOS Toolbar updates instantly.
Multiple instances of Visual Studio 2019 can connect to the Macsimultaneously.
It's possible to use the Windows command-line to build iOS applications.
Note
Before following the instructions in this guide, complete the following steps:
- On a Windows machine, install Visual Studio 2019
- On a Mac, install Xcode and Visual Studio for Mac
- You must manually open Xcode after installing so that it can add any additional components.
If you would prefer not to install Visual Studio for Mac, Visual Studio 2019can automatically configure the Mac build host with Xamarin.iOS and Mono.You must still install and run Xcode.For more information, see Automatic Mac provisioning.
Enable remote login on the Mac
To set up the Mac build host, first enable remote login:
Mac Ssh Config Not Working
On the Mac, open System Preferences and go to the Sharing pane.
Check Remote Login in the Service list.
Make sure that it is configured to allow access for All users, orthat your Mac username or group is included in the list of allowedusers.
If prompted, configure the macOS firewall.
If you have set the macOS firewall to block incoming connections, youmay need to allow
mono-sgento receive incoming connections. An alertappears to prompt you if this is the case.If it is on the same network as the Windows machine, the Mac shouldnow be discoverable by Visual Studio 2019. If the Mac is still notdiscoverable, try manually adding a Mac or takea look at the troubleshooting guide.
Connect to the Mac from Visual Studio 2019
Now that remote login is enabled, connect Visual Studio 2019 to the Mac.
In Visual Studio 2019, open an existing iOS project or create a new oneby choosing File > New > Project and then selecting an iOS projecttemplate.
Open the Pair to Mac dialog.
Use the Pair to Mac button iOS toolbar:
Or, select Tools > iOS > Pair to Mac.
The Pair to Mac dialog displays a list of all previously-connectedand currently-available Mac build hosts:
Select a Mac in the list. Click Connect.
Enter your username and password.
The first time you connect to any particular Mac, you areprompted to enter your username and password for that machine:
Tip
When logging in, use your system username rather than full name.
Pair to Mac uses these credentials to create a new SSH connectionto the Mac. If it succeeds, a key is added to the authorized_keysfile on the Mac. Subsequent connections to the same Mac will loginautomatically.
Pair to Mac automatically configures the Mac.
Starting with Visual Studio 2019 version15.6,Visual Studio 2019 installs or updates Mono and Xamarin.iOS on aconnected Mac build host as needed (note that Xcode must still beinstalled manually). See Automatic Macprovisioning for more details.
Look for the connection status icon.
When Visual Studio 2019 is connected to a Mac, that Mac's itemin the Pair to Mac dialog displays an icon indicating thatit is currently connected:
There can be only one connected Mac at a time.
Tip
Right-clicking any Mac in the Pair to Mac list brings up a contextmenu that allows you to Connect.., Forget this Mac, orDisconnect:
If you choose Forget this Mac, your credentials for the selectedMac will be forgotten. To reconnect to that Mac, you will need to re-enteryour username and password.
Abaqus. If you have successfully paired to a Mac build host, you are ready to buildXamarin.iOS apps in Visual Studio 2019. Take a look at theIntroduction to Xamarin.iOS for Visual Studioguide.
If you have not been able to pair a Mac, try manually adding aMac or take a look at the troubleshootingguide.
Manually add a Mac
If you do not see a particular Mac listed in the Pair to Mac dialog,add it manually:
Locate your Mac's IP address.
Open System Preferences > Sharing > Remote Login on your Mac:
Alternatively, use the command line. In Terminal, issue this command:
Depending on your network configuration, you may need to use aninterface name other than
en0. For example:en1,en2, etc.
In Visual Studio 2019's Pair to Mac dialog, select Add Mac..:
Enter the Mac's IP address and click Add:
Enter your username and password for the Mac:
Tip
When logging in, use your system username rather than full name.
Click Login to connect Visual Studio 2019 to the Mac over SSH and addit to the list of known machines.
Automatic Mac provisioning
Starting with Visual Studio 2019 version 15.6,Pair to Mac automatically provisions a Mac with software necessary forbuilding Xamarin.iOS applications: Mono, Xamarin.iOS (the softwareframework, not the Visual Studio for Mac IDE), and various Xcode-relatedtools (but not Xcode itself).
Important
- Pair to Mac cannot install Xcode; you must manually install it on theMac build host. It is required for Xamarin.iOS development.
- Automatic Mac provisioning requires that remote login isenabled on the Mac, and the Mac must be network-accessible to the Windowsmachine. See Enabling remote login on the Macfor more details.
- Automatic Mac provisioning requires 3GB of free space on the Mac to install Xamarin.iOS.
Pair to Mac performs necessary software installations/updates when VisualStudio 2019 is connecting to theMac.
Mono
Pair to Mac will check to make sure that Mono is installed. If it is notinstalled, Pair to Mac will download and install the latest stable versionof Mono on the Mac.
Progress is indicated by various prompts, as shown by the followingscreenshots (click to zoom):
| Mono | Install Check | Downloading | Installing |
|---|
Xamarin.iOS
Pair to Mac upgrades Xamarin.iOS on the Mac to match the versioninstalled on the Windows machine.
Important
Pair to Mac will not downgrade Xamarin.iOS on the Mac from alpha/betato stable. If you have Visual Studio for Mac installed, set yourrelease channel asfollows:
- If you use Visual Studio 2019, select the Stable updates channel inVisual Studio for Mac.
- If you use Visual Studio 2019 Preview, select the Alpha updateschannel in Visual Studio for Mac.
Progress is indicated by various prompts, as shown by the followingscreenshots (click to zoom):
| Xamarin.iOS | Install Check | Downloading | Installing |
|---|
Xcode tools and license
Pair to Mac will also check to determine whether Xcode has been installedand its license accepted. While Pair to Mac does not install Xcode, itdoes prompt for license acceptance, as shown in the following screenshots(click to zoom):
| Xcode | Install Check | License Acceptance |
|---|
Additionally, Pair to Mac will install or update various packagesdistributed with Xcode. For example:
- MobileDeviceDevelopment.pkg
- XcodeExtensionSupport.pkg
- MobileDevice.pkg
- XcodeSystemResources.pkg
The installation of these packages happens quickly and without a prompt.
Note
These tools are distinct from the Xcode Command Line Tools, whichas of macOS 10.9 areinstalled with Xcode.
Traffic options in the Free version - 500MB/Month (unregistered) - 1GB/Month (with account registration) Premium version (accessible via in-app purchase) - Unlimited Traffic – Avira Phantom VPN Pro gives you full-scale data transfer. Premium Support – Includes mobile tech support provided by Avira. Avira vpn. Avira VPN tracking information; Encryption of Avira VPN for Mac; Data security with Avira VPN for Mac; Characteristics of the VPN; Contact Avira. Get in touch with our Avira professionals. They're on standby to help you, both via email and telephone. Are you using a paid-for consumer product? Click Start → Control Panel → Programs → Programs and Features. Click with the right mouse button the Avira product you wish to uninstall and click Uninstall. Confirm the following product uninstall notification with Yes. Confirm the activation of the Windows Firewall with Yes. 'Avira free security is the latest evolution of the modern antivirus solution. In its basic form, it brings forth one of the best antivirus engines, a VPN, and a lot of other efficient goodies that will have a big impact on protecting your privacy and even ensure that your computer is running as it should.' Avira Phantom VPN is available for a wide range of devices and operating systems. The free VPN works with Windows, Android, iOS, and Mac. Install the software on your PC, laptop, tablet, and smartphone to start browsing anonymously and enjoy complete privacy across all devices. VPN for mobile devices.
Troubleshooting automatic Mac provisioning
If you encounter any trouble using automatic Mac provisioning, take a lookat the Visual Studio 2019 IDE logs, stored in%LOCALAPPDATA%XamarinLogs16.0. These logs may contain error messagesto help you better diagnose the failure or get support.
Build iOS apps from the Windows command-line
Pair to Mac supports building Xamarin.iOS applications from the commandline. For example:
The parameters passed to msbuild in the above example are:
ServerAddress– The IP address of the Mac build host.ServerUser– The username to use when logging in to the Mac build host.Use your system username rather than your full name.ServerPassword– The password to use when logging in to the Mac build host.
Note
Visual Studio 2019 stores msbuild in the following directory:C:Program Files (x86)Microsoft Visual Studio2019MSBuildCurrentBin
The first time Pair to Mac logs in to a particular Mac build host fromeither Visual Studio 2019 or the command-line, it sets up SSH keys. With thesekeys, future logins will not require a username or password. Newlycreated keys are stored in %LOCALAPPDATA%XamarinMonoTouch.
If the ServerPassword parameter is omitted from a command-line buildinvocation, Pair to Mac attempts to log in to the Mac build hostusing the saved SSH keys.
Summary
Before following the instructions in this guide, complete the following steps:
- On a Windows machine, install Visual Studio 2019
- On a Mac, install Xcode and Visual Studio for Mac
- You must manually open Xcode after installing so that it can add any additional components.
If you would prefer not to install Visual Studio for Mac, Visual Studio 2019can automatically configure the Mac build host with Xamarin.iOS and Mono.You must still install and run Xcode.For more information, see Automatic Mac provisioning.
Enable remote login on the Mac
To set up the Mac build host, first enable remote login:
Mac Ssh Config Not Working
On the Mac, open System Preferences and go to the Sharing pane.
Check Remote Login in the Service list.
Make sure that it is configured to allow access for All users, orthat your Mac username or group is included in the list of allowedusers.
If prompted, configure the macOS firewall.
If you have set the macOS firewall to block incoming connections, youmay need to allow
mono-sgento receive incoming connections. An alertappears to prompt you if this is the case.If it is on the same network as the Windows machine, the Mac shouldnow be discoverable by Visual Studio 2019. If the Mac is still notdiscoverable, try manually adding a Mac or takea look at the troubleshooting guide.
Connect to the Mac from Visual Studio 2019
Now that remote login is enabled, connect Visual Studio 2019 to the Mac.
In Visual Studio 2019, open an existing iOS project or create a new oneby choosing File > New > Project and then selecting an iOS projecttemplate.
Open the Pair to Mac dialog.
Use the Pair to Mac button iOS toolbar:
Or, select Tools > iOS > Pair to Mac.
The Pair to Mac dialog displays a list of all previously-connectedand currently-available Mac build hosts:
Select a Mac in the list. Click Connect.
Enter your username and password.
The first time you connect to any particular Mac, you areprompted to enter your username and password for that machine:
Tip
When logging in, use your system username rather than full name.
Pair to Mac uses these credentials to create a new SSH connectionto the Mac. If it succeeds, a key is added to the authorized_keysfile on the Mac. Subsequent connections to the same Mac will loginautomatically.
Pair to Mac automatically configures the Mac.
Starting with Visual Studio 2019 version15.6,Visual Studio 2019 installs or updates Mono and Xamarin.iOS on aconnected Mac build host as needed (note that Xcode must still beinstalled manually). See Automatic Macprovisioning for more details.
Look for the connection status icon.
When Visual Studio 2019 is connected to a Mac, that Mac's itemin the Pair to Mac dialog displays an icon indicating thatit is currently connected:
There can be only one connected Mac at a time.
Tip
Right-clicking any Mac in the Pair to Mac list brings up a contextmenu that allows you to Connect.., Forget this Mac, orDisconnect:
If you choose Forget this Mac, your credentials for the selectedMac will be forgotten. To reconnect to that Mac, you will need to re-enteryour username and password.
Abaqus. If you have successfully paired to a Mac build host, you are ready to buildXamarin.iOS apps in Visual Studio 2019. Take a look at theIntroduction to Xamarin.iOS for Visual Studioguide.
If you have not been able to pair a Mac, try manually adding aMac or take a look at the troubleshootingguide.
Manually add a Mac
If you do not see a particular Mac listed in the Pair to Mac dialog,add it manually:
Locate your Mac's IP address.
Open System Preferences > Sharing > Remote Login on your Mac:
Alternatively, use the command line. In Terminal, issue this command:
Depending on your network configuration, you may need to use aninterface name other than
en0. For example:en1,en2, etc.
In Visual Studio 2019's Pair to Mac dialog, select Add Mac..:
Enter the Mac's IP address and click Add:
Enter your username and password for the Mac:
Tip
When logging in, use your system username rather than full name.
Click Login to connect Visual Studio 2019 to the Mac over SSH and addit to the list of known machines.
Automatic Mac provisioning
Starting with Visual Studio 2019 version 15.6,Pair to Mac automatically provisions a Mac with software necessary forbuilding Xamarin.iOS applications: Mono, Xamarin.iOS (the softwareframework, not the Visual Studio for Mac IDE), and various Xcode-relatedtools (but not Xcode itself).
Important
- Pair to Mac cannot install Xcode; you must manually install it on theMac build host. It is required for Xamarin.iOS development.
- Automatic Mac provisioning requires that remote login isenabled on the Mac, and the Mac must be network-accessible to the Windowsmachine. See Enabling remote login on the Macfor more details.
- Automatic Mac provisioning requires 3GB of free space on the Mac to install Xamarin.iOS.
Pair to Mac performs necessary software installations/updates when VisualStudio 2019 is connecting to theMac.
Mono
Pair to Mac will check to make sure that Mono is installed. If it is notinstalled, Pair to Mac will download and install the latest stable versionof Mono on the Mac.
Progress is indicated by various prompts, as shown by the followingscreenshots (click to zoom):
| Mono | Install Check | Downloading | Installing |
|---|
Xamarin.iOS
Pair to Mac upgrades Xamarin.iOS on the Mac to match the versioninstalled on the Windows machine.
Important
Pair to Mac will not downgrade Xamarin.iOS on the Mac from alpha/betato stable. If you have Visual Studio for Mac installed, set yourrelease channel asfollows:
- If you use Visual Studio 2019, select the Stable updates channel inVisual Studio for Mac.
- If you use Visual Studio 2019 Preview, select the Alpha updateschannel in Visual Studio for Mac.
Progress is indicated by various prompts, as shown by the followingscreenshots (click to zoom):
| Xamarin.iOS | Install Check | Downloading | Installing |
|---|
Xcode tools and license
Pair to Mac will also check to determine whether Xcode has been installedand its license accepted. While Pair to Mac does not install Xcode, itdoes prompt for license acceptance, as shown in the following screenshots(click to zoom):
| Xcode | Install Check | License Acceptance |
|---|
Additionally, Pair to Mac will install or update various packagesdistributed with Xcode. For example:
- MobileDeviceDevelopment.pkg
- XcodeExtensionSupport.pkg
- MobileDevice.pkg
- XcodeSystemResources.pkg
The installation of these packages happens quickly and without a prompt.
Note
These tools are distinct from the Xcode Command Line Tools, whichas of macOS 10.9 areinstalled with Xcode.
Traffic options in the Free version - 500MB/Month (unregistered) - 1GB/Month (with account registration) Premium version (accessible via in-app purchase) - Unlimited Traffic – Avira Phantom VPN Pro gives you full-scale data transfer. Premium Support – Includes mobile tech support provided by Avira. Avira vpn. Avira VPN tracking information; Encryption of Avira VPN for Mac; Data security with Avira VPN for Mac; Characteristics of the VPN; Contact Avira. Get in touch with our Avira professionals. They're on standby to help you, both via email and telephone. Are you using a paid-for consumer product? Click Start → Control Panel → Programs → Programs and Features. Click with the right mouse button the Avira product you wish to uninstall and click Uninstall. Confirm the following product uninstall notification with Yes. Confirm the activation of the Windows Firewall with Yes. 'Avira free security is the latest evolution of the modern antivirus solution. In its basic form, it brings forth one of the best antivirus engines, a VPN, and a lot of other efficient goodies that will have a big impact on protecting your privacy and even ensure that your computer is running as it should.' Avira Phantom VPN is available for a wide range of devices and operating systems. The free VPN works with Windows, Android, iOS, and Mac. Install the software on your PC, laptop, tablet, and smartphone to start browsing anonymously and enjoy complete privacy across all devices. VPN for mobile devices.
Troubleshooting automatic Mac provisioning
If you encounter any trouble using automatic Mac provisioning, take a lookat the Visual Studio 2019 IDE logs, stored in%LOCALAPPDATA%XamarinLogs16.0. These logs may contain error messagesto help you better diagnose the failure or get support.
Build iOS apps from the Windows command-line
Pair to Mac supports building Xamarin.iOS applications from the commandline. For example:
The parameters passed to msbuild in the above example are:
ServerAddress– The IP address of the Mac build host.ServerUser– The username to use when logging in to the Mac build host.Use your system username rather than your full name.ServerPassword– The password to use when logging in to the Mac build host.
Note
Visual Studio 2019 stores msbuild in the following directory:C:Program Files (x86)Microsoft Visual Studio2019MSBuildCurrentBin
The first time Pair to Mac logs in to a particular Mac build host fromeither Visual Studio 2019 or the command-line, it sets up SSH keys. With thesekeys, future logins will not require a username or password. Newlycreated keys are stored in %LOCALAPPDATA%XamarinMonoTouch.
If the ServerPassword parameter is omitted from a command-line buildinvocation, Pair to Mac attempts to log in to the Mac build hostusing the saved SSH keys.
Summary
This article described how to use Pair to Mac to connect Visual Studio 2019 to aMac build host, enabling Visual Studio 2019 developers to build native iOSapplications with Xamarin.iOS.
Next steps
This guide will show you how to enable SSH (remote login) on your Mac OS X machine and connect to it using a private key file (.ppk) while disabling password logins (more secure). In this example, we will setup the remote connection using Putty.
- Enable SSH on your Mac. Go to System Preferences -> Sharing -> Remote Login.
- Now, we will generate our private and public SSH keys on our Mac. Open Terminal and type the following commands.
Create a .ssh directory. This directory will be hidden in your Mac X User home path.
Generate SSH private and public keys.
- Now, we want to create an authorized_keys file in the same directory to allow remote hosts to connect to our Mac using the key file we just generated.
Create the authorized_keys file in Terminal.
- Let's take a look at the keys and authorized keys files we just created. At the menu bar, select Go -> Go to Folder… and type /Users/USER/.ssh replacing USER with your Mac X username. We see 3 files.
authorized_keys - your shared public key file
id_rsa - your private key
id_rsa.pub - your public key
- We want to copy our Public Key exactly into our authorized_keys file. Open id_rsa.pub and copy the text into your authorized_keys file. Save the file. (To do this, you can drag both files to your Desktop to gain access to perform the copies if needed, then drag back to the .ssh folder). See example below.
- In order to use Putty to connect via SSH via a private key, we must convert the id_rsa private key to Putty format (.ppk). We will use PuttyGen.exe to convert our id_rsa private key to a .ppk file. Download and install PuttyGen here.
Note:You can run PuttyGen.exe on Mac OS X following this guide. Otherwise, you will need to run PuttyGen on a Windows machine.
- Launch PuttyGen.exe and click Load.
- For Files of Type select All Files. Locate and select your id_rsa private key.
- Click Save private key. Click Yes to save without a password (this is not needed). You can name the file whatever you want.
You now have a .ppk file we can use for our Putty connection. Save this key somewhere safe and never share it with anyone!
Next, we will configure SSH on our Mac to only allow key authentications and disable password authentications. This will immediately drop a connection made to our Mac unless a key file is being used (more secure).
Configure SSH on Mac OS X to Force Private Key Authentication Only
- At the menu bar, select Go -> Go to Folder… and type /etc/ssh/ and hit return.
- Open the sshd_config file. (To edit this, file you can drag it to your Desktop to edit then drag back to same folder)
- We need to change 2 lines in sshd_config file.
Change UsePAM no
Uncomment and change PasswordAuthentication no
- Save the ssh_config file.
- Restart Mac X remote login for our changes to take affect. Go to System Preferences -> Sharing -> Remote Login and turn off / on.
Now, we can use Putty to create an SSH connection to our Mac we generated our keys on. Download and install Putty here.
Note:You can run Putty.exe on Mac OS X following this guide.
Open Putty and create a new connection. We will point to our private key file (.ppk). Go to Connection -> SSH -> Auth and load the .ppk file here. This can be tricky, ensure your creating a new connection in Putty and saving it so it remembers the key we just imported.
Try connecting. You will receive a login prompt for username. This will be the user of your Mac (any other username you put here will fail immediately).
If successful, you will login to your shell immediately pictured below! No password needed!
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