[macos] How do I open port 22 in OS X 10.6.7

I am trying to open port 22 on osx so I can connect to localhost using ssh. This is my current situation:

ssh localhost
ssh: connect to host localhost port 22: Connection refused

I have generated a key and tossed it into my authorized_keys file like so:

sh-keygen -t dsa -P '' -f ~/.ssh/id_dsa
cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys

A "Network Utility" port scan confirms that 22 (and surprisingly 23) are closed.

Context: I am working on getting Hadoop set up locally. In my configuration, I am running services on localhost:####s and need to open communications to them via ssh.

How can I open 22? or could I be up against another issue (improperly generated key perhaps?)

As per macOS 10.14.5, below are the details:

Go to

system preferences > sharing > remote login.

There are 3 solutions available for these.

1) Enable remote login using below command - sudo systemsetup -setremotelogin on

2) In Mac, go to System Preference -> Sharing -> enable Remote Login that's it. 100% working solution

3) Final and most important solution is - Check your private area network connection . Sometime remote login isn't allow inside the local area network.

Kindly try to connect your machine using personal network like mobile network, Hotspot etc.

I couldn't solve the problem; Then I did the following and the issue was resolved: Refer here:

sudo launchctl unload -w /System/Library/LaunchDaemons/ssh.plist  
    (Supply your password when it is requested)   
sudo launchctl load -w /System/Library/LaunchDaemons/ssh.plist  
ssh -v localhost  
sudo launchctl list | grep "sshd"  
    46427   -   com.openssh.sshd  

I'm using OSX 10.11.6 and this article works for me.