Debian Linux安裝OpenSSH(sshd-server)
阿新 • • 發佈：2018-12-05
Debian Linux安裝OpenSSH(sshd-server)
您需要使用apt-get或aptitude命令在Debian Linux下安裝OpenSSH伺服器。
開啟終端並鍵入以下命令以root使用者身份更新包資料庫：
# apt-get update
任務：在Debian Linux下安裝OpenSSH伺服器
鍵入以下命令：
# apt-get install openssh-server ... Reading package lists... Done Building dependency tree Reading state information... Done Suggested packages: ssh-askpass rssh molly-guard ufw The following NEW packages will be installed: openssh-server 0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded. Need to get 318 kB of archives. After this operation, 717 kB of additional disk space will be used. Get:1 http://mirror.anl.gov/debian/ squeeze/main openssh-server amd64 1:5.5p1-6+squeeze1 [318 kB] Fetched 318 kB in 3s (89.0 kB/s) Preconfiguring packages ... Selecting previously deselected package openssh-server. (Reading database ... 153448 files and directories currently installed.) Unpacking openssh-server (from .../openssh-server_1%3a5.5p1-6+squeeze1_amd64.deb) ... Processing triggers for man-db ... Setting up openssh-server (1:5.5p1-6+squeeze1) ... Creating SSH2 RSA key; this may take some time ... Creating SSH2 DSA key; this may take some time ... Restarting OpenBSD Secure Shell server: sshd.
預設情況下，openssh將在TCP埠22上執行。您可以使用以下命令對其進行驗證：示例輸出：
# netstat -tulpn | grep :22
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 3946 / sshd
tcp6 0 0 ::: 22 ::: * LISTEN 3946 / sshd
您可以連線到Openssh伺服器，鍵入：
$ ssh [email protected]
$ ssh [email protected]
如何在Debian Linux下啟動/停止/重啟OpenSSH伺服器？
以root使用者身份鍵入以下命令：OR 示例會話：
# service ssh stop
# service ssh start
# service ssh restart
# service ssh status
# /etc/init.d/ssh stop
# /etc/init.d/ssh start
# /etc/init.d/ssh restart
# /etc/init.d/ssh status
如何在防火牆級別開啟埠22？
編輯防火牆指令碼並附加以下規則以限制對192.168.1.0/24的訪問：
/sbin/iptables -A INPUT -s 192.168.1.0/24 -m state --state NEW -p tcp --dport 22 -j ACCEPT
儲存並關閉檔案。或者，您可以按如下方式鍵入命令並將其儲存到防火牆配置檔案中：
＃/sbin/iptables -A INPUT -s 192.168.1.0/24 -m state --state NEW -p tcp --dport 22 -j ACCEPT
＃iptables-save > /path/to/your.firewall.conf如何在Debian Linux下配置和保護OpenSSH伺服器？
您需要使用文字編輯器（如vi，run）編輯/ etc / ssh / sshd_config檔案：
# vi /etc/ssh/sshd_config
請參閱此文章解釋配置選項以進行調整以提高OpenSSH伺服器安全性。
翻譯來源：https://www.cyberciti.biz/faq/debian-linux-install-openssh-sshd-server/