為Linux系統(tǒng)的VPS服務(wù)器開啟SSH密鑰登錄的方法

#ssh-keygen -t rsa //這里同是產(chǎn)生公鑰和私鑰

Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa): //這里表示秘鑰存放地點，直接回車
Created directory '/root/.ssh'. //默認(rèn)創(chuàng)建/root/.ssh以保存秘鑰
Enter passphrase (empty for no passphrase): //輸入密鑰密碼，可以直接回車
Enter same passphrase again: //重復(fù)密鑰密碼，可以直接回車
Your identification has been saved in /root/.ssh/id_rsa. //提示公鑰和私鑰已經(jīng)存放在/root /.ssh/目錄下
Your public key has been saved in /root/.ssh/id_rsa.pub.
#cd /root/.ssh/
# ls
id_rsa.pub id_rsa //可以看到兩個秘鑰,將這兩個保存好，將私鑰拷貝到本地
#mv id_rsa.pub authorized_keys //將公鑰改名為authorized_keys
#chmod 600 /root/.ssh/authorized_keys //修改秘鑰的權(quán)限，600表示屬主有rw權(quán)限
當(dāng)然如果本地自己是用linux則生成的秘鑰，要將公鑰拷貝到vps上，并修改名字和權(quán)限
#scp id_rsa.pub root@192.168.10.1:/root/.ssh
#mv id_rsa.pub authorized_keys //這里是改名字，是在/root/.ssh目錄下操作

#/etc/init.d/sshd restart //再重啟sshd服務(wù)，我的是centos

#chmod 600 id_rsa //將本地的私鑰改成rw權(quán)限
#ssh root@192.168.0.1 /root/id_rsa //id_rsa為私鑰，根據(jù)自己的私鑰路徑寫

PasswordAuthentication no //表示禁止密碼口令登陸/p> p>permitrootlogin no //表示禁止root遠(yuǎn)程登錄