Good night, <\/p>\n
To install ssh server in Ubuntu use: <\/p>\n
\n$ sudo apt-get install openssh-server\n<\/p><\/blockquote>\n
To let it safer edit \/etc\/ssh\/sshd_config<\/p>\n
\n$ sudo vi \/etc\/ssh\/sshd_config\n<\/p><\/blockquote>\n
Than change the lines:<\/p>\n
AllowUsers USER
\nAllowGroups GROUP_USER
\nPasswordAuthentication yes
\nMaxStartups 2:100:2
\nPort XXX # Change the port<\/p><\/blockquote>\nWhat MaxStartups do? Specify the number of un authenticated connections in server. The syntax is start:percent:max. Example: 10:50:20. When it gets to 10 connections it will start with the percent. So every new connection will have 50% of chance to be automaticlly refused. When it gets to 20. It will denied ALL the new connections. <\/p>\n
If you want, you can ask for a second password, if you type it wrong, it will close the connection:<\/p>\n
Edit \/home\/user\/.profile<\/p>\n
echo Put your password
\nread senha
\nif [ $senha == “SOMETHING” ]
\nthen
\n # CODES THAT ALREADY ARE AT .profile
\nelse
\nexit
\nfi<\/p><\/blockquote>\nWith this you can do some tricks, to create a new RANDOM password every time somebody connect and send it to your e-mail. So you will need to put your normal password, than access your e-mail account, verify the new password and type it. <\/p>\n
Best Regards,
\nMatheus<\/p>\nReferences:
\nDesabilitar Comando SU<\/a>
\nInforma\u00e7\u00e3o MaxStartups<\/a>
\n<\/p>","protected":false},"excerpt":{"rendered":"Good night, To install ssh server in Ubuntu use: $ sudo apt-get install openssh-server To let it safer edit \/etc\/ssh\/sshd_config $ sudo vi \/etc\/ssh\/sshd_config Than…<\/p>\n