一、参考链接 🔊
阿里巴巴开源镜像站-OPSX镜像站-阿里云开发者社区 (aliyun.com)
openssh镜像-openssh下载地址-openssh安装教程-阿里巴巴开源镜像站 (aliyun.com)
OpenSSH8.6安装教程_wqww_1的博客-CSDN博客_openssh8.6安装包
二、OpenSSH简介 🏆
OpenSSH（OpenBSD Secure Shell）是使用SSH透过计算机网络加密通信的实现。它是取代由SSH Communications Security所提供的商用版本的开放源代码方案。目前OpenSSH是OpenBSD的子项目。
OpenSSH常常被误认以为与OpenSSL有关系，但实际上这两个项目有不同的目的，不同的发展团队，名称相近只是因为两者有同样的软件发展目标──提供开放源代码的加密通信软件。
来源：维基百科
三、OpenSSH安装操作 🎈
1、清除缓存并更新YUM源 🥇
[root@centos ~]# yum clean all Loaded plugins: fastestmirror Cleaning repos: base extras updates Cleaning up list of fastest mirrors [root@centos ~]# yum repolist Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: mirrors.aliyun.com * extras: mirrors.aliyun.com * updates: mirrors.aliyun.com repo id repo name status base/7/x86_64 CentOS-7 - Base - mirrors.aliyun.com 10,072 extras/7/x86_64 CentOS-7 - Extras - mirrors.aliyun.com 500 updates/7/x86_64 CentOS-7 - Updates - mirrors.aliyun.com 3,190 repolist: 13,762
2、查看原来SSH版本信息并卸载 🔎
[root@centos ~]# rpm -qa | grep ssh openssh-clients-7.4p1-21.el7.x86_64 openssh-7.4p1-21.el7.x86_64 openssh-server-7.4p1-21.el7.x86_64 libssh2-1.8.0-4.el7.x86_64 [root@centos ~]# ssh -V OpenSSH_7.4p1, OpenSSL 1.0.2k-fips 26 Jan 2017 [root@centos ~]# rpm -qa | grep openssh | xargs rpm -e --nodeps [root@centos ~]# rpm -qa | grep openssh [root@centos ~]#
3、本地下载OpenSSH镜像包并上传至Linux系统 📺
（或者采用步骤4，二者取其一即可）
✅ 下载链接：阿里云开源镜像站资源目录 (aliyun.com)
4、使用wget命令下载OpenSSH安装包 🔗
💥 复制链接地址。 💥
https://mirrors.aliyun.com/openssh/portable/openssh-8.8p1.tar.gz
使用wget命令下载。 🔍
[root@centos ~]# wget https://mirrors.aliyun.com/openssh/portable/openssh-8.8p1.tar.gz --2021-12-15 12:43:53-- https://mirrors.aliyun.com/openssh/portable/openssh-8.8p1.tar.gz Resolving mirrors.aliyun.com (mirrors.aliyun.com)... 27.221.120.242, 61.162.46.209, 27.221.120.240, ... Connecting to mirrors.aliyun.com (mirrors.aliyun.com)|27.221.120.242|:443... connected. HTTP request sent, awaiting response... 200 OK Length: 1815060 (1.7M) [application/octet-stream] Saving to: ‘openssh-8.8p1.tar.gz’ 100%[==============================================================================>] 1,815,060 3.36MB/s in 0.5s 2021-12-15 12:43:54 (3.36 MB/s) - ‘openssh-8.8p1.tar.gz’ saved [1815060/1815060] [root@centos ~]#
5、采用源码进行安装 📗
#💖💖💖查看openssh安装包💖💖💖 [root@centos ~]# ll total 1780 -rw-------. 1 root root 1531 Nov 28 17:50 anaconda-ks.cfg -rw-r--r-- 1 root root 1815060 Sep 26 22:39 openssh-8.8p1.tar.gz [root@centos ~]# [root@centos ~]# tar -zxvf openssh-8.8p1.tar.gz [root@centos ~]# ll total 1796 -rw-------. 1 root root 1531 Nov 28 17:50 anaconda-ks.cfg drwxr-xr-x 7 1000 1000 12288 Sep 26 22:07 openssh-8.8p1 -rw-r--r-- 1 root root 1815060 Sep 26 22:39 openssh-8.8p1.tar.gz #💗💗💗安装依赖包💗💗💗 [root@centos ~]# cd openssh-8.8p1 [root@centos openssh-8.8p1]# ls ······省略 [root@centos openssh-8.8p1]# yum install -y lrzsz zlib-devel perl gcc pam-devel openssl-devel ·········· 安装过程省略 ·········· Installed: gcc.x86_64 0:4.8.5-44.el7 lrzsz.x86_64 0:0.12.20-36.el7 openssl-devel.x86_64 1:1.0.2k-22.el7_9 pam-devel.x86_64 0:1.1.8-23.el7 perl.x86_64 4:5.16.3-299.el7_9 zlib-devel.x86_64 0:1.2.7-19.el7_9 Dependency Installed: keyutils-libs-devel.x86_64 0:1.5.8-3.el7 krb5-devel.x86_64 0:1.15.1-51.el7_9 libcom_err-devel.x86_64 0:1.42.9-19.el7 libkadm5.x86_64 0:1.15.1-51.el7_9 libselinux-devel.x86_64 0:2.5-15.el7 libsepol-devel.x86_64 0:2.5-10.el7 libverto-devel.x86_64 0:0.2.5-4.el7 pcre-devel.x86_64 0:8.32-17.el7 perl-Carp.noarch 0:1.26-244.el7 perl-Encode.x86_64 0:2.51-7.el7 perl-Exporter.noarch 0:5.68-3.el7 perl-File-Path.noarch 0:2.09-2.el7 perl-File-Temp.noarch 0:0.23.01-3.el7 perl-Filter.x86_64 0:1.49-3.el7 perl-Getopt-Long.noarch 0:2.40-3.el7 perl-HTTP-Tiny.noarch 0:0.033-3.el7 perl-PathTools.x86_64 0:3.40-5.el7 perl-Pod-Escapes.noarch 1:1.04-299.el7_9 perl-Pod-Perldoc.noarch 0:3.20-4.el7 perl-Pod-Simple.noarch 1:3.28-4.el7 perl-Pod-Usage.noarch 0:1.63-3.el7 perl-Scalar-List-Utils.x86_64 0:1.27-248.el7 perl-Socket.x86_64 0:2.010-5.el7 perl-Storable.x86_64 0:2.45-3.el7 perl-Text-ParseWords.noarch 0:3.29-4.el7 perl-Time-HiRes.x86_64 4:1.9725-3.el7 perl-Time-Local.noarch 0:1.2300-2.el7 perl-constant.noarch 0:1.27-2.el7 perl-libs.x86_64 4:5.16.3-299.el7_9 perl-macros.x86_64 4:5.16.3-299.el7_9 perl-parent.noarch 1:0.225-244.el7 perl-podlators.noarch 0:2.5.1-3.el7 perl-threads.x86_64 0:1.87-4.el7 perl-threads-shared.x86_64 0:1.43-6.el7 Dependency Updated: krb5-libs.x86_64 0:1.15.1-51.el7_9 openssl.x86_64 1:1.0.2k-22.el7_9 openssl-libs.x86_64 1:1.0.2k-22.el7_9 Complete! [root@centos openssh-8.8p1]# # 💝💝💝安装OpenSSH💝💝💝 [root@centos openssh-8.8p1]# ./configure --prefix=/usr/local/ssh --sysconfdir=/etc/ssh --with-pam OpenSSH has been configured with the following options: User binaries: /usr/local/ssh/bin System binaries: /usr/local/ssh/sbin Configuration files: /etc/ssh Askpass program: /usr/local/ssh/libexec/ssh-askpass Manual pages: /usr/local/ssh/share/man/manX PID file: /var/run Privilege separation chroot path: /var/empty sshd default user PATH: /usr/bin:/bin:/usr/sbin:/sbin:/usr/local/ssh/bin Manpage format: doc PAM support: yes OSF SIA support: no KerberosV support: no SELinux support: no MD5 password support: no libedit support: no libldns support: no Solaris process contract support: no Solaris project support: no Solaris privilege support: no IP address in $DISPLAY hack: no Translate v4 in v6 hack: yes BSD Auth support: no Random number source: OpenSSL internal ONLY Privsep sandbox style: seccomp_filter PKCS#11 support: yes U2F/FIDO support: yes Host: x86_64-pc-linux-gnu Compiler: cc Compiler flags: -g -O2 -pipe -Wall -Wextra -Wpointer-arith -Wuninitialized -Wsign-compare -Wformat-security -Wsizeof-pointer-memaccess -Wno-pointer-sign -Wno-unused-parameter -Wno-unused-result -fno-strict-aliasing -D_FORTIFY_SOURCE=2 -ftrapv -fno-builtin-memset -fstack-protector-strong -fPIE Preprocessor flags: -D_XOPEN_SOURCE=600 -D_BSD_SOURCE -D_DEFAULT_SOURCE Linker flags: -Wl,-z,relro -Wl,-z,now -Wl,-z,noexecstack -fstack-protector-strong -pie Libraries: -lcrypto -ldl -lutil -lz -lcrypt -lresolv +for sshd: -lpam PAM is enabled. You may need to install a PAM control file for sshd, otherwise password authentication may fail. Example PAM control files can be found in the contrib/ subdirectory [root@centos openssh-8.8p1]# # 🎈🎈🎈开始编译安装🎈🎈🎈 [root@centos openssh-8.8p1]# make ······ 编译过程省略 ······ [root@centos openssh-8.8p1]# make install (cd openbsd-compat && make) make[1]: Entering directory `/root/openssh-8.8p1/openbsd-compat' make[1]: Nothing to be done for `all'. make[1]: Leaving directory `/root/openssh-8.8p1/openbsd-compat' /usr/bin/mkdir -p /usr/local/ssh/bin /usr/bin/mkdir -p /usr/local/ssh/sbin /usr/bin/mkdir -p /usr/local/ssh/share/man/man1 /usr/bin/mkdir -p /usr/local/ssh/share/man/man5 /usr/bin/mkdir -p /usr/local/ssh/share/man/man8 /usr/bin/mkdir -p /usr/local/ssh/libexec /usr/bin/mkdir -p -m 0755 /var/empty /usr/bin/install -c -m 0755 -s ssh /usr/local/ssh/bin/ssh /usr/bin/install -c -m 0755 -s scp /usr/local/ssh/bin/scp /usr/bin/install -c -m 0755 -s ssh-add /usr/local/ssh/bin/ssh-add /usr/bin/install -c -m 0755 -s ssh-agent /usr/local/ssh/bin/ssh-agent /usr/bin/install -c -m 0755 -s ssh-keygen /usr/local/ssh/bin/ssh-keygen /usr/bin/install -c -m 0755 -s ssh-keyscan /usr/local/ssh/bin/ssh-keyscan /usr/bin/install -c -m 0755 -s sshd /usr/local/ssh/sbin/sshd /usr/bin/install -c -m 4711 -s ssh-keysign /usr/local/ssh/libexec/ssh-keysign /usr/bin/install -c -m 0755 -s ssh-pkcs11-helper /usr/local/ssh/libexec/ssh-pkcs11-helper /usr/bin/install -c -m 0755 -s ssh-sk-helper /usr/local/ssh/libexec/ssh-sk-helper /usr/bin/install -c -m 0755 -s sftp /usr/local/ssh/bin/sftp /usr/bin/install -c -m 0755 -s sftp-server /usr/local/ssh/libexec/sftp-server /usr/bin/install -c -m 644 ssh.1.out /usr/local/ssh/share/man/man1/ssh.1 /usr/bin/install -c -m 644 scp.1.out /usr/local/ssh/share/man/man1/scp.1 /usr/bin/install -c -m 644 ssh-add.1.out /usr/local/ssh/share/man/man1/ssh-add.1 /usr/bin/install -c -m 644 ssh-agent.1.out /usr/local/ssh/share/man/man1/ssh-agent.1 /usr/bin/install -c -m 644 ssh-keygen.1.out /usr/local/ssh/share/man/man1/ssh-keygen.1 /usr/bin/install -c -m 644 ssh-keyscan.1.out /usr/local/ssh/share/man/man1/ssh-keyscan.1 /usr/bin/install -c -m 644 moduli.5.out /usr/local/ssh/share/man/man5/moduli.5 /usr/bin/install -c -m 644 sshd_config.5.out /usr/local/ssh/share/man/man5/sshd_config.5 /usr/bin/install -c -m 644 ssh_config.5.out /usr/local/ssh/share/man/man5/ssh_config.5 /usr/bin/install -c -m 644 sshd.8.out /usr/local/ssh/share/man/man8/sshd.8 /usr/bin/install -c -m 644 sftp.1.out /usr/local/ssh/share/man/man1/sftp.1 /usr/bin/install -c -m 644 sftp-server.8.out /usr/local/ssh/share/man/man8/sftp-server.8 /usr/bin/install -c -m 644 ssh-keysign.8.out /usr/local/ssh/share/man/man8/ssh-keysign.8 /usr/bin/install -c -m 644 ssh-pkcs11-helper.8.out /usr/local/ssh/share/man/man8/ssh-pkcs11-helper.8 /usr/bin/install -c -m 644 ssh-sk-helper.8.out /usr/local/ssh/share/man/man8/ssh-sk-helper.8 /usr/bin/mkdir -p /etc/ssh ssh-keygen: generating new host keys: DSA /usr/local/ssh/sbin/sshd -t -f /etc/ssh/sshd_config @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: UNPROTECTED PRIVATE KEY FILE! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ Permissions 0640 for '/etc/ssh/ssh_host_rsa_key' are too open. It is required that your private key files are NOT accessible by others. This private key will be ignored. @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: UNPROTECTED PRIVATE KEY FILE! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ Permissions 0640 for '/etc/ssh/ssh_host_ecdsa_key' are too open. It is required that your private key files are NOT accessible by others. This private key will be ignored. @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: UNPROTECTED PRIVATE KEY FILE! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ Permissions 0640 for '/etc/ssh/ssh_host_ed25519_key' are too open. It is required that your private key files are NOT accessible by others. This private key will be ignored. sshd: no hostkeys available -- exiting. make: [check-config] Error 1 (ignored) [root@centos openssh-8.8p1]#
解压openssh-8.8p1.tar.gz压缩包，结果如下图所示。 📌
通过YUM源命令安装lrzsz zlib-devel perl gcc pam-devel等服务组件，结果如下图所示了。 📎📝
运行./configure --prefix=/usr/local/ssh --sysconfdir=/etc/ssh --with-pam此命令后，结果如下图所示。 💞💞💞
运行完make命令后，结果如下图所示。 💦💦💦
运行完make install命令后，结果如下图所示。 💙💙💙
6、修改相关参数 📚
[root@centos openssh-8.8p1]# cd /etc/init.d/ [root@centos init.d]# cp /root/openssh-8.8p1/contrib/redhat/sshd.init /etc/init.d/sshd [root@centos init.d]# ll total 44 -rw-r--r--. 1 root root 18281 May 22 2020 functions -rwxr-xr-x. 1 root root 4569 May 22 2020 netconsole -rwxr-xr-x. 1 root root 7928 May 22 2020 network -rw-r--r--. 1 root root 1160 Oct 2 2020 README -rwxr-xr-x 1 root root 1721 Dec 15 13:20 sshd [root@centos init.d]# chmod u+x /etc/init.d/sshd [root@centos init.d]# chkconfig --add sshd [root@centos init.d]# cp /root/openssh-8.8p1/sshd_config /etc/ssh/ssh_config cp: overwrite ‘/etc/ssh/ssh_config’? y [root@centos init.d]# cp -r /usr/local/ssh/bin/* /usr/bin/ [root@centos init.d]# cp -r /usr/local/ssh/sbin/* /usr/sbin/ [root@centos init.d]# vi /etc/ssh/sshd_config 添加如下内容 #PasswordAuthentication yes PermitRootLogin yes [root@centos init.d]#chmod 600 /etc/ssh/*
7、启动并查看SSH服务 📞 🧰
[root@centos ~]# systemctl start sshd [root@centos ~]# systemctl restart sshd [root@centos ~]# systemctl status sshd ● sshd.service - SYSV: OpenSSH server daemon Loaded: loaded (/etc/rc.d/init.d/sshd; bad; vendor preset: enabled) Active: active (running) since Wed 2021-12-15 13:24:56 CST; 5s ago Docs: man:systemd-sysv-generator(8) Process: 19403 ExecStop=/etc/rc.d/init.d/sshd stop (code=exited, status=0/SUCCESS) Process: 19409 ExecStart=/etc/rc.d/init.d/sshd start (code=exited, status=0/SUCCESS) Main PID: 19417 (sshd) CGroup: /system.slice/sshd.service └─19417 sshd: /usr/sbin/sshd [listener] 0 of 10-100 startups Dec 15 13:24:56 centos systemd[1]: Stopped SYSV: OpenSSH server daemon. Dec 15 13:24:56 centos systemd[1]: Starting SYSV: OpenSSH server daemon... Dec 15 13:24:56 centos sshd[19409]: Starting sshd:[ OK ] Dec 15 13:24:56 centos systemd[1]: Can't open PID file /var/run/sshd.pid (yet?) after start: No such file or directory Dec 15 13:24:56 centos sshd[19417]: Server listening on 0.0.0.0 port 22. Dec 15 13:24:56 centos sshd[19417]: Server listening on :: port 22. Dec 15 13:24:56 centos systemd[1]: Started SYSV: OpenSSH server daemon.
8、查看SSH服务版本信息。🎶🎧
[root@centos ~]# ssh -V OpenSSH_8.8p1, OpenSSL 1.0.2k-fips 26 Jan 2017
