Openssl
tar -xzvf openssl-openssl-1.0.2l.tar.gz
cd openssl-1.0.2le
./config --prefix=/usr/local/openssl
./config –t
make depend
cd /usr/local
ln -s openssl ssl
/etc/ld.so.conf檔案的最後面,添加
/usr/local/openssl/lib
ldconfig
/etc/profile的最後一行,添加
export OPENSSL=/usr/local/openssl/bin
export PATH=$OPENSSL:$PATH:$HOME/bin
重新登入
[root@localhost local]# openssl version
OpenSSL 1.0.1e-fips 11 Feb 2013
Openssh
舊版本OpenSSH存在遠端通路執行漏洞,安裝Linux系統後需要更新OpenSSH來修複此漏洞,加強伺服器安全性。
注意:更新過程中不要重新開機sshd服務,否則隻有進機房了!!!
1、加載本地源
2、檢查相關包,確定已成功安裝
yum install bash -y
yum install -y zlib zlib-devel openssl openssl-devel
tar -zxvf openssh-7.5p1.tar.gz -C /usr/local/src/
cd /usr/local/src/openssh-7.5p1/
cp /etc/init.d/sshd /etc/init.d/sshd.bak
yum install gcc -y
3、解除安裝老版本
rpm -qa|grep ssh
rpm -e openssh-server-5.3p1-81.el6.x86_64
rpm -e openssh-clients-5.3p1-81.el6.x86_64 --nodeps
or yum remove openssh-clients
rpm -e openssh-askpass-5.3p1-81.el6.x86_64
rpm -e openssh-5.3p1-81.el6.x86_64
4、開始更新
./configure --prefix=/usr --sysconfdir=/etc/ssh --with-zlib --with-md5-passwords
make && make install
mv /etc/init.d/sshd.bak /etc/init.d/sshd
mkdir -p /var/empty/sshd/etc
/etc/init.d/sshd restart
chkconfig --add sshd
chkconfig sshd on
chkconfig --list|grep sshd
5、檢查是否更新成功
[root@centos6 openssh-7.5p1]# ssh -V
OpenSSH_7.5p1, OpenSSL 1.0.1e-fips 11 Feb 2013
6、troubleshooting
登入提示:no maching outgoing encryption algorithm found
請更新高版本Xshell
編譯中出現如下提示:
configure: error: *** OpenSSL headers missing - pleaseinstall first or check config.log ***
請安裝這兩個包libssl-dev和openssl-devel
更新後預設不允許root登入,修改配置檔案sshd_config:
#PermitRootLogin prohibit-password
PermitRootLogin yes
附:Index of /pub/OpenBSD/OpenSSH/portable:
http://www.openssl.org/source/
https://openbsd.hk/pub/OpenBSD/OpenSSH/portable/