Article directory
1. Start the ssh service
sudo /etc/init.d/ssh start
2. Modify the SSH configuration file
configuration file directory
/etc/ssh/sshd_config
By default, root remote login is not allowed, and it can be enabled in the configuration file.
sudo vi /etc/ssh/sshd_config
Find PermitRootLogin without-password and modify it to PermitRootLogin yes (I have encountered it before)
3. Restart the SSH service
service ssh restart
Summary: When debugging the rkdemo board, I found that I could not use ssh to connect to the core board, which greatly affected the debugging efficiency. After searching on the Internet, I found that it was a configuration problem. The original text is quoted as follows: Solve the problem that SSH cannot connect under ubuntu