CentOS 6 升级 OpenSSH 8.1p1

yum install -y gcc openssl-devel pam-devel rpm-build tcp_wrappers-devel

mkdir /backup/ssh
cp -a /etc/ssh /backup/ssh/ssh_bak
cp -a /etc/pam.d/sshd /backup/ssh/sshd.bak

cd /usr/local/src
wget https://ftp.riken.jp/pub/OpenBSD/OpenSSH/portable/openssh-8.1p1.tar.gz
tar zxvf openssh-8.1p1.tar.gz
cd openssh-8.1p1
./configure --prefix=/usr --sysconfdir=/etc/ssh --with-pam --with-zlib --with-md5-passwords --with-tcp-wrappers
make
make install

sed -i '/^#PermitRootLogin/s/#PermitRootLogin yes/PermitRootLogin yes/' /etc/ssh/sshd_config
sed -i '/^GSSAPICleanupCredentials/s/GSSAPICleanupCredentials yes/#GSSAPICleanupCredentials yes/' /etc/ssh/sshd_config
sed -i '/^GSSAPIAuthentication/s/GSSAPIAuthentication yes/#GSSAPIAuthentication yes/' /etc/ssh/sshd_config
sed -i '/^GSSAPIAuthentication/s/GSSAPIAuthentication no/#GSSAPIAuthentication no/' /etc/ssh/sshd_config

/etc/init.d/sshd restart
ssh -V