系统 ubuntu 14.04 desktop x64

建立过程：

sshd和vsftpd都是debian比别人二的地方，可能这两个的配置参数太多，而且daemon版本更迭频繁导致，各版本的参数说法不一致

步骤：

1 安装服务器

apt-get install ssh

这个名字就很二，应该叫sshd比较好

2 配置服务器

参考附件，主要配置了

PermitRootLogin yes

3 启动服务

/usr/sbin/sshd

问题处理

1 尝试/etc/init.d/ssh start等不生效，未去查找原因

2 如果网络出现问题查看ufw disable,iptables -F

3 如果client一端链接出现如下问题，

The fingerprint for the ECDSA key sent by the remote host is

Please contact your system administrator.
Add correct host key in /root/.ssh/known_hosts to get rid of this message.
Offending ECDSA key in /root/.ssh/known_hosts:11
ECDSA host key for 172.16.17.224 has changed and you have requested strict checking.
Host key verification Failed.
解决方法：客户端删除/root/.ssh/known_hosts

附件

root@fz:~# cat /etc/ssh/sshd_config # Package generated configuration file # See the sshd_config(5) manpage for details # What ports,IPs and protocols we listen for Port 22 # Use these options to restrict which interfaces/protocols sshd will bind to #ListenAddress :: ListenAddress 0.0.0.0 Protocol 2 # HostKeys for protocol version 2 HostKey /etc/ssh/ssh_host_rsa_key HostKey /etc/ssh/ssh_host_dsa_key HostKey /etc/ssh/ssh_host_ecdsa_key HostKey /etc/ssh/ssh_host_ed25519_key #Privilege Separation is turned on for security UsePrivilegeSeparation yes # Lifetime and size of ephemeral version 1 server key KeyRegenerationInterval 3600 ServerKeyBits 1024 # Logging SyslogFacility AUTH LogLevel INFO # Authentication: LoginGraceTime 120 PermitRootLogin yes StrictModes yes RSAAuthentication yes PubkeyAuthentication yes AuthorizedKeysFile %h/.ssh/authorized_keys # Don't read the user's ~/.rhosts and ~/.shosts files IgnoreRhosts yes # For this to work you will also need host keys in /etc/ssh_known_hosts RhostsRSAAuthentication no # similar for protocol version 2 HostbasedAuthentication no # Uncomment if you don't trust ~/.ssh/known_hosts for RhostsRSAAuthentication #IgnoreUserKnownHosts yes # To enable empty passwords,change to yes (NOT RECOMMENDED) PermitEmptyPasswords no # Change to yes to enable challenge-response passwords (beware issues with # some PAM modules and threads) ChallengeResponseAuthentication no # Change to no to disable tunnelled clear text passwords PasswordAuthentication yes # Kerberos options #KerberosAuthentication no #KerberosGetAFSToken no #KerberosOrLocalPasswd yes #KerberosTicketCleanup yes # GSSAPI options #GSSAPIAuthentication no #GSSAPICleanupCredentials yes X11Forwarding yes X11DisplayOffset 10 PrintMotd no PrintLastLog yes TCPKeepAlive yes #UseLogin no #MaxStartups 10:30:60 #Banner /etc/issue.net # Allow client to pass locale environment variables AcceptEnv LANG LC_* Subsystem sftp /usr/lib/openssh/sftp-server # Set this to 'yes' to enable PAM authentication,account processing,# and session processing. If this is enabled,PAM authentication will # be allowed through the ChallengeResponseAuthentication and # PasswordAuthentication. Depending on your PAM configuration,# PAM authentication via ChallengeResponseAuthentication may bypass # the setting of "PermitRootLogin without-password". # If you just want the PAM account and session checks to run without # PAM authentication,then enable this but set PasswordAuthentication # and ChallengeResponseAuthentication to 'no'. UsePAM yes