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下面以CentOS平台為例,說明怎麼安裝ssh伺服器。下面為了方便,都是以root使用者權限去操作,實際情況下,請使用一般使用者權限去使用,只需要加入sudo就行。
[root@localhost ~]# yum install openssh-server
這樣就可以安裝好ssh-server了。
檢驗SSH是否安裝好了,可以用下面的命令:
[linuxidc@localhost ~]$ ssh -version
OpenSSH_5.3p1, OpenSSL 1.0.0-fips 29 Mar 2010
Bad escape character ‘rsion‘.
如果顯示上面的資訊,說明安裝好了SSH。
有些使用者可能會問,我怎麼記地是安裝openssh-server而不是直接yum install ssh呢?這裡告訴大家一個方法(CentOS平台),可以快速知道我們需要安裝程式的名稱。如下:
[root@localhost ~]# yum search ssh
Loaded plugins: fastestmirror, refresh-packagekit, security
Loading mirror speeds from cached hostfile
* base: mirrors.btte.net
* extras: mirrors.btte.net
* updates: www.ftp.ne.jp
============================= N/S Matched: ssh =============================
ksshaskpass.x86_64 : A KDE version of ssh-askpass with KWallet support
libssh2.i686 : A library implementing the SSH2 protocol
libssh2.x86_64 : A library implementing the SSH2 protocol
libssh2-devel.i686 : Development files for libssh2
libssh2-devel.x86_64 : Development files for libssh2
libssh2-docs.x86_64 : Documentation for libssh2
openssh.x86_64:An open source implementation of SSH protocol versions 1and 2
openssh-askpass.x86_64 : A passphrase dialog for OpenSSH and X
openssh-clients.x86_64 : An open source SSH client applications
openssh-ldap.x86_64 : A LDAP support for open source SSH server daemon
openssh-server.x86_64 : An open source SSH server daemon
pam_ssh_agent_auth.i686 : PAM module for authentication with ssh-agent
pam_ssh_agent_auth.x86_64 : PAM module for authentication with ssh-agent
trilead-ssh2.noarch : SSH-2 protocol implementation in pure Java
trilead-ssh2-javadoc.noarch : Javadoc for trilead-ssh2
jsch.noarch : Pure Java implementation of SSH2
python-paramiko.noarch : A SSH2 protocol library for python
python-twisted-conch.x86_64 : SSH and SFTP protocol implementation
together with clients and servers
Name and summary matches only, use "search all" for everything.
從上面我們可以看到openssh-server,這就是我們需要安裝的程式名稱。
如果你是Ubuntu平台呢?沒關係,可以運行下面的命令,也可以達到上面一樣的效果
[root@localhost ~]# apt-get update //這行可以不要
[root@localhost ~]# apt-cache search ssh
下面我們列出ssh服務sshd在各個執行等級的啟動情況:
[[email protected] ~]# chkconfig --list sshd
sshd 0:off 1:off 2:off 3:off 4:off 5:off 6:off
手動啟動sshd服務(需要root許可權),命令如下:
[[email protected] ~]# /etc/init.d/sshd start
Generating SSH1 RSA host key: [ OK ]
Generating SSH2 RSA host key: [ OK ]
Generating SSH2 DSA host key: [ OK ]
Starting sshd: [ OK ]
這樣可以在putty或別的用戶端登入到這台Linux機器了。如果需要停止ssh服務可以運行下面的命令
[[email protected] ~]# /etc/init.d/sshd stop
Stopping sshd: [ OK ]
Linux平台下安裝SSH