https://www.cnblogs.com/liweiming/p/11571841.html
https://blog.51cto.com/13654115/2452631?source=dra
制作6系统使用的包，在六系统上制作，制作7系统使用的包。在7系统上面制作，下载相关依赖包
yum install rpm-build zlib-devel openssl-devel gcc perl-devel pam-devel unzip -y
yum install libXt* -y
yum install imake* -y
yum install gtk2* -y
mkdir -p /root/rpmbuild/{SOURCES,SPECS}
cd /root/rpmbuild/SOURCES
wget https://cdn.openbsd.org/pub/OpenBSD/OpenSSH/portable/openssh-8.0p1.tar.gz
wget https://src.fedoraproject.org/repo/pkgs/openssh/x11-ssh-askpass-1.2.4.1.tar.gz/8f2e41f3f7eaa8543a2440454637f3c3/x11-ssh-askpass-1.2.4.1.tar.gz
tar zxvf openssh-8.4p1.tar.gz openssh-8.4p1/contrib/redhat/openssh.spec
mv openssh-8.4p1/contrib/redhat/openssh.spec ../SPECS/
chown sshd:sshd /root/rpmbuild/SPECS/openssh.spec
cp /root/rpmbuild/SPECS/openssh.spec /root/rpmbuild/SPECS/openssh.spec_def
sed -i -e "s/%define no_gnome_askpass 0/%define no_gnome_askpass 1/g" /root/rpmbuild/SPECS/openssh.spec
sed -i -e "s/%define no_x11_askpass 0/%define no_x11_askpass 1/g" /root/rpmbuild/SPECS/openssh.spec
cd /root/rpmbuild/SPECS/
vi openssh.spec
注释掉 BuildRequires: openssl-devel < 1.1 因为目前安装的版本都低于1.1
cd /root/rpmbuild/SPECS/
rpmbuild -ba openssh.spec
---需要修改ssh_config内容
cp /etc/init.d/sshd /root/
cp /etc/pam.d/sshd /etc/pam.d/sshd.old
cp /etc/ssh/sshd_config /etc/ssh/sshd_config.old
cat /etc/pam.d/sshd.old > /etc/pam.d/sshd
cat /etc/ssh/sshd_config.old > /etc/ssh/sshd_config
ln -s /usr/lib64/libcrypto.so.1.0.1e /usr/lib64/libcrypto.so.10
ln -s /usr/lib64/libcrypto.so.1.0.1e /usr/lib64/libcrypto.so
ln -s /usr/lib64/libssl.so.1.0.1e /usr/lib64/libssl.so
ln -s /usr/lib64/libssl.so.1.0.1e /usr/lib64/libssl.so.10
ln -s libcrypto.so.1.0.1e libcrypto.so
ln -s libssl.so.1.0.1e libssl.so
rpm -Uvh *.rpm
rm -rf /etc/ssh/ssh_host_*key
/etc/init.d/sshd restart >/dev/null 2>&1
安装注意：
########################################
Vi修改/etc/ssh/sshd_config文件，修改如下内容：
#PermitRootLogin prohibit-password 修改为PermitRootLogin yes
#UsePAM no 修改为 UsePAM yes
/etc/pam.d/sshd 要覆盖原来的文件 不然密码验证不通过
cp /etc/pam.d/sshd /etc/pam.d/sshdbak
https://www.openssl.org/source/
#!/bin/bash
##########################################################
## ##
## Script Name:install-openssh for Redhat-CenOS-6.0~7.6 ##
## By：Eren 2019-08-29 ##
## ##
##########################################################
###
echo ---- config file copy ......Please Wait ----
cp /etc/pam.d/sshd /tmp/
cp /etc/ssh/sshd_config /tmp/
if [ $? == 1 ]
then
echo "cp failed "
exit 0
fi
###
echo ---- install-openssh ......Please Wait ----
###
os=`cat /etc/redhat-release|sed -r 's/.* ([0-9]+)\..*/\1/'`
if [ $os == 6 ];then
rpm -Uvh *el6*.rpm
else
rpm -Uvh *el7*.rpm
fi
echo ---- install-openssh installation is Complete ----
###
cat /tmp/sshd > /etc/pam.d/sshd
cat /tmp/sshd_config > /etc/ssh/sshd_config
###
#sed -i '/#UsePAM no/a\UsePAM yes' /etc/ssh/sshd_config
###
rm -rf /etc/ssh/ssh_host_*key
/etc/init.d/sshd restart >/dev/null 2>&1
###
ssh -V
1 开始telnet
前期准备，开启telnet端口
mv /etc/securetty /etc/securetty.bak
vi /etc/xinetd.d/telnet
# disable = yes
service xinetd restart
chkconfig --add sshd
chkconfig sshd on
chkconfig --list sshd
一、Failed to start SYSV: OpenSSH server daemon.
chmod 600 /etc/ssh/ssh_host_rsa_key
chmod 600 /etc/ssh/ssh_host_ecdsa_key
chmod 600 ssh_host_ed25519_key
二、经过排查发现是ssh rpm 升级后会修改/etc/pam.d/sshd 文件,需要备份此文件,升级完还原此文件。还原后的文件内容为：
https://blog.csdn.net/weixin_37565541/article/details/93488866
#%PAM-1.0
auth required pam_sepermit.so
auth include password-auth
account required pam_nologin.so
account include password-auth
password include password-auth
# pam_selinux.so close should be the first session rule
session required pam_selinux.so close
session required pam_loginuid.so
# pam_selinux.so open should only be followed by sessions to be executed in the user context
session required pam_selinux.so open env_params
session optional pam_keyinit.so force revoke
session include password-auth
