Merge pull request #3489 from esweet431/esweet431-patch-1

Host key verification

Author: PRMerger20

docs/linux/connect-to-your-remote-linux-computer.md

@@ -97,6 +97,17 @@ If ssh isn't already set up and running on your Linux system, follow these steps
    ::: moniker-end
 
    ::: moniker range="msvc-160"
+   
+## Host key verification
+
+In Visual Studio version 16.10 or later, you will be asked to verify the host key fingerprint presented by the server when Visual Studio connects to a remote system for the first time. You may be familiar with this if you’ve used the OpenSSH command-line client or PuTTY before. The fingerprint identifies the server and is used to ensure that Visual Studio is connecting to the intended and trusted server. 
+
+You will be asked to accept or deny the host key fingerprint presented by the server the first time a new remote connection is established, or anytime that a cached fingerprint has changed. You can also verify a fingerprint on demand by selecting a connection in the Connection Manager and clicking "Verify." 
+
+If you are upgrading to Visual Studio 16.10 from an older version of Visual Studio, then all existing remote connections will be treated as a new connection. You will be prompted to accept the host key fingerprint before a connection is established and the accepted fingerprint will be cached. 
+
+You can also update remote connections from ConnectionManager.exe using the `update` argument. 
+
 
 ## Supported SSH algorithms
 

docs/linux/connectionmanager-reference.md

@@ -61,6 +61,10 @@ The functionality of ConnectionManager.exe is also available in Visual Studio. T
 - **`version`**
 
   Displays version information.
+  
+- **`update`** \[*default* \| *all* \| *connection_id* \| *user\@host* \[**`--port`** *port*]] \[**`--previous`**] [**`--fingerprint`**]
+
+  Added in Visual Studio 16.10. Updates the host key fingerprint of the specified connection(s). 
 
 ### Options
 
@@ -95,6 +99,14 @@ The functionality of ConnectionManager.exe is also available in Visual Studio. T
 - **`-i`**
 
   Same as **`--privatekey`**.
+  
+- **`--previous`**
+
+  Indicates that the connection(s) will be read from the previous version of connection manager, updated, and written to the new version. 
+  
+- **`--fingerprint`**
+
+  The host key fingerprint presented by the server. Use this option with **`list`** to view a connection's fingerprint.
 
 ## Examples
 
@@ -120,4 +132,4 @@ ConnectionManager.exe modify 21212121 --property shell=csh
 
 [Connect to your target Linux system in Visual Studio](connect-to-your-remote-linux-computer.md)
 
-::: moniker-end
+::: moniker-end