Very simple, ssh root@ what is the password behind the account?

I followed the net lesson, only to see the second lesson, the first to log on to the server
Then the teacher said SSH to pass a host address, you need to specify a user name
Root user, he used his previous domain name, and then I freaked out.
I don't have a domain?
Then I followed him to lose the same, also succeeded, and then asked me to lose the password? I don't know when to set the password ah ....... .....
Guess how many of your own possible passwords are wrong.
The teacher is using @plter.com, what is this generic domain name?
This password may be set at what time (too long and not very understanding so do not remember that there is no set up)

My knowledge of PHP is just loaded ...

Reply to discussion (solution)

What is the server ... what server is PHP used for ... I can find something.
I pressed XAMPP and Phpstrom and Cygwin.

SSH account @ Address
The address can be a domain name, machine name, IP. You said that either is the real domain name, or is the local hosts.
For SSH login, and the use of root login, it is recommended not to use a password to log in, constantly people will scan the weak password.
Generally for security purposes, do not use the default 22 port, disable password logon, and switch to public key login instead.

You need to build your own server, set the domain name.

SSH account @ Address
The address can be a domain name, machine name, IP. You said that either is the real domain name, or is the local hosts.
For SSH login, and the use of root login, it is recommended not to use a password to log in, constantly people will scan the weak password.
Generally for security purposes, do not use the default 22 port, disable password logon, and switch to public key login instead.

What do I want the local server to lose? is the DNS server address?

What is the general need to deploy PHP to? Is this important ... I see there are deployments to the standalone host, on the SAE, BAE on
Is this a necessary step when I'm learning it?

You need to build your own server, set the domain name.

What do you usually do with it? Local server

SSH root@localhost

