ssh
apt-get install -y aptitude
aptitude install -f libpam0g-dev libselinux1-dev
apt-get install -y libssl-dev zlib1g-dev

# 备份ssh配置
cp -rf /etc/ssh /etc/ssh.bak

# 设置文件权限
chmod 600 /etc/ssh/ssh_host_rsa_key
chmod 600 /etc/ssh/ssh_host_ecdsa_key
chmod 600 /etc/ssh/ssh_host_ed25519_key

# 配置sshd配置
sed -i ‘s/^#PermitRootLogin yes/PermitRootLogin yes/’ /etc/ssh/sshd_config
sed -i ‘s/^GSSAPIAuthentication/#&/’ /etc/ssh/sshd_config
sed -i ‘s/^GSSAPICleanupCredentials/#&/’ /etc/ssh/sshd_config
sed -i ‘s/^UsePAM/#&/’ /etc/ssh/sshd_config

# 配置service, 取消notify
sed -i ‘s/^Type/#&/’ /lib/systemd/system/ssh.service

# 下载包

wget https://ftp.openbsd.org/pub/OpenBSD/OpenSSH/portable/openssh-8.6p1.tar.gz
tar zxf openssh-8.6p1.tar.gz

# 编译安装
cd openssh-8.6p1
./configure –prefix=/usr –with-privsep-path=/var/empty/sshd/ \
–sysconfdir=/etc/ssh –with-ssl-dir=/usr/local/openssl/ \
–with-default-path=/usr/local/bin:/bin:/usr/bin \
–with-superuser-path=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin \
–with-pam –with-selinux –disable-strip –with-md5-passwords
make
make install

# 重启服务
systemctl daemon-reload

systemctl restart sshd

# 现在版本
ssh -V

openssl
https://www.howtoforge.com/tutorial/how-to-install-openssl-from-source-on-linux/

也可以看这个

https://stackoverflow.com/a/49578644

但是记得要看Openssl是不是在path里面