CentOS 5.5下升级OpenSSH-4.3p2到5.6p1

1、通过Filezilla上传需要的相关软件

上传至/usr/local/src目录，查看： [root@server ~]# cd /usr/local/src [root@server src]# ls [root@server src]# ls openssh-5.6p1.tar.gz  openssl-1.0.0c.tar.gz  zlib-1.2.5.tar.gz [root@server src]#

2、使用ssh -v查看当前SSH的版本：

[root@server ~]# ssh -v OpenSSH_4.3p2, OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008 usage: ssh [-1246AaCfgkMNnqsTtVvXxY] [-b bind_address] [-c cipher_spec]            [-D [bind_address:]port] [-e escape_char] [-F configfile]            [-i identity_file] [-L [bind_address:]port:host:hostport]            [-l login_name] [-m mac_spec] [-O ctl_cmd] [-o option] [-p port]            [-R [bind_address:]port:host:hostport] [-S ctl_path]            [-w tunnel:tunnel] [user@]hostname [command]

3、安装zlib-1.2.5

注意： 安装之前确保已经装有gcc、gcc-c++库 [root@server src]# rpm -qa gcc [root@server src]# rpm -qa gcc-c++ 如果没有安装可以用yum直接联网安装： [root@server src]# yum -y install gcc [root@server src]# yum -y install gcc-c++

确保已经安装了gcc和gcc-c++库后，开始安装zlib-1.2.5 [root@server src]# tar -zxvf zlib-1.2.5.tar.gz [root@server src]# cd zlib-1.2.5 [root@server zlib-1.2.5]# ./configure --prefix=/usr/local/zlib-1.2.5 -share [root@server zlib-1.2.5]# make [root@server zlib-1.2.5]# make test [root@server zlib-1.2.5]# make install [root@server zlib-1.2.5]# vi /etc/ld.so.conf          #配置库文件搜索路径 增加下列一行 /usr/local/zlib-1.2.5/lib [root@server zlib-1.2.5]# ldconfig -v                  #刷新缓存文件/etc/ld.so.cache

4、安装openssl

[root@server src]# tar -zxvf openssl-1.0.0c.tar.gz [root@server src]# cd openssl-1.0.0c [root@server openssl-1.0.0c]# ./config shared zlib-dynamic --prefix=/usr/local/openssl-1.0.0c --with-zlib-lib=/usr/local/zlib-1.2.5/lib --with-zlib-include=/usr/local/zlib-1.2.5/include [root@server openssl-1.0.0c]# make [root@server openssl-1.0.0c]# make test           (这一步是进行 SSL 加密协议的完整测试，如果出现错误就要一定先找出原因，否则可能导致SSH不能用) [root@server openssl-1.0.0c]# make install [root@server openssl-1.0.0c]# vi /etc/ld.so.conf     #配置库文件搜索路径 增加下列一行 /usr/local/openssl-1.0.0c/lib                               #64位OS 没有生成lib目录，是lib64目录 [root@server openssl-1.0.0c]# ldconfig -v             #刷新缓存文件/etc/ld.so.cache [root@server openssl-1.0.0c]# vi /etc/profile         #将新的ssl加入PATH变量中 增加下列两行 PATH=/usr/local/openssl/bin:$PATH export PATH 保存、退出 [root@server openssl-1.0.0c]# find / -name openssl      #查找openssl所在系统位置 /usr/lib/openssl                                                #旧的 /usr/local/openssl-1.0.0c/include/openssl                #新的 /usr/local/openssl-1.0.0c/bin/openssl                      #新的 /usr/bin/openssl                                               #旧的 接下来开始替换系统原来的SSL [root@server openssl-1.0.0c]# cp -R /usr/bin/openssl /usr/bin/oldopenssl [root@server openssl-1.0.0c]# cp -R /usr/lib/openssl /usr/lib/oldopenssl [root@server openssl-1.0.0c]# rm -rf /usr/lib/libcrypto.so [root@server openssl-1.0.0c]# rm -rf /usr/lib/libssl.so [root@server openssl-1.0.0c]# ln -s /usr/local/openssl-1.0.0c/lib/libcrypto.so.1.0.0 /usr/lib/libcrypto.so [root@server openssl-1.0.0c]# ln -s /usr/local/openssl-1.0.0c/lib/libssl.so.1.0.0 /usr/lib/libssl.so [root@server openssl-1.0.0c]# cp -r /usr/local/openssl-1.0.0c/lib/* /usr/lib/openssl [root@server openssl-1.0.0c]# echo /usr/local/openssl-1.0.0c/lib >> /etc/ld.so.conf [root@server openssl-1.0.0c]# ldconfig -v [root@server openssl-1.0.0c]# openssl version -v     #查看openssl的新版本号 OpenSSL 1.0.0c 2 Dec 2010

5、卸载当前使用的openssh

[root@server openssl-1.0.0c]# rpm -qa openssh openssh-4.3p2-41.el5 [root@server openssl-1.0.0c]# rpm -e openssh-4.3p2-41.el5 error: Failed dependencies:         openssh = 4.3p2-41.el5 is needed by (installed) openssh-clients-4.3p2-41.el5.i386         openssh = 4.3p2-41.el5 is needed by (installed) openssh-server-4.3p2-41.el5.i386         openssh = 4.3p2-41.el5 is needed by (installed) openssh-askpass-4.3p2-41.el5.i386 [root@server openssl-1.0.0c]# rpm -e openssh-askpass-4.3p2-41.el5.i386 [root@server openssl-1.0.0c]# rpm -e openssh-server-4.3p2-41.el5.i386 [root@server openssl-1.0.0c]# rpm -e openssh-clients-4.3p2-41.el5.i386 [root@server openssl-1.0.0c]# rpm -e openssh-4.3p2-41.el

6、安装新版本openssh

[root@server src]# tar -zxvf openssh-5.6p1.tar.gz [root@server src]# cd openssh-5.6p1 [root@server openssh-5.6p1]# ./configure --prefix=/usr --sysconfdir=/etc/ssh --with-pam --with-ssl-dir=/usr/local/openssl-1.0.0c --with-md5-passwords --mandir=/usr/share/man --with-zlib=/usr/local/zlib-1.2.5 --without-openssl-header-check 出现：configure: error: PAM headers not found 错误 说明系统中没有安装pam-devel RPM 包，找到安装光盘，安装pam-devel或者用yum直接安装 [root@server openssh-5.6p1]# yum -y install pam* 安装完PAM相关包后，再重新编译 [root@server openssh-5.6p1]# ./configure --prefix=/usr --sysconfdir=/etc/ssh --with-pam --with-ssl-dir=/usr/local/openssl-1.0.0c --with-md5-passwords --mandir=/usr/share/man --with-zlib=/usr/local/zlib-1.2.5 --without-openssl-header-check [root@server openssh-5.6p1]# make [root@server openssh-5.6p1]# make install [root@server openssh-5.6p1]# cp contrib/redhat/sshd.init /etc/init.d/sshd [root@server openssh-5.6p1]# chmod +x /etc/init.d/sshd [root@server openssh-5.6p1]# chkconfig --add sshd [root@server openssh-5.6p1]# service sshd start 正在启动 sshd：WARNING: initlog is deprecated and will be removed in a future release [确定] 这时出现“WARNING: initlog is deprecated and will be removed in a future release ”错误，可能是前面编译安装ssh在启动服务的时候没有更改文件路径，解决方法是：编辑/etc/init.d/sshd 注释如下行 #initlog -c "$SSHD $OPTIONS" && success || failure 添加如下行 $SSHD $OPTIONS && success || failure  然后再重新启动sshd服务，正常 [root@server openssh-5.6p1]# /etc/init.d/sshd restart 停止 sshd：[确定] 正在启动 sshd：[确定] 最后使用ssh -v查看当前的SSH版本： [root@server openssh-5.6p1]# ssh -v OpenSSH_5.6p1, OpenSSL 1.0.0c 2 Dec 2010 usage: ssh [-1246AaCfgKkMNnqsTtVvXxYy] [-b bind_address] [-c cipher_spec]            [-D [bind_address:]port] [-e escape_char] [-F configfile]            [-I pkcs11] [-i identity_file]            [-L [bind_address:]port:host:hostport]            [-l login_name] [-m mac_spec] [-O ctl_cmd] [-o option] [-p port]            [-R [bind_address:]port:host:hostport] [-S ctl_path]            [-W host:port] [-w local_tun[:remote_tun]]            [user@]hostname [command] OK，升级完成。