https提供安全的web通讯
原理部分：http://stlong.blog.51cto.com/5144113/1730771
1)配置域名支持ca：
[root@ns ~]# vim /var/named/chroot/var/named/sggfu.com.zone ##添加ca主机记录
ca IN A 192.18.100.151
:wq
[root@ns ~]# /etc/init.d/named restart ##重启服务
[root@ns ~]# nslookup
> server 192.168.100.100
Default server: 192.168.100.100
Address: 192.168.100.100#53
> ca.sggfu.com
Server: 192.168.100.100
Address: 192.168.100.100#53
Name: ca.sggfu.com
Address: 192.18.100.151
> exit
2)配置CA服务器：(192.168.100.151)
a.使用母盘克隆虚拟机，命名为ca服务器，修改如下：
[root@localhost ~]# vim /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
HWADDR=00:0C:29:75:e6:eb
TYPE=Ethernet
ONBOOT=yes
NM_CONTROLLED=no
BOOTPROTO=static
IPADDR=192.168.100.151
NETMASK=255.255.255.0
DNS1=192.168.100.100
GATEWAY=192.168.100.100
:wq
[root@localhost ~]# vim /etc/sysconfig/network
HOSTNAME=ca.sggfu.com
:wq
[root@localhost ~]# vim /etc/udev/rules.d/70-persistent-net.rules ##删除eth0，修改eth1为eth0
[root@localhost ~]# reboot
b.配置CA:
[root@ca ~]# hostname
ca.sggfu.com
[root@ca ~]# yum -y install openssl openssl-devel ##安装openssl
[root@ca ~]# rpm -ql openssl
/etc/pki/CA
/etc/pki/CA/certs ##证书存放目录
/etc/pki/CA/crl ##吊销的证书存放的目录
/etc/pki/CA/newcerts##新证书目录
/etc/pki/CA/private ##私钥存放目录
/etc/pki/tls/openssl.cnf ##主配置文件
/usr/bin/openssl ##主程序命令
[root@ca ~]# vim /etc/pki/tls/openssl.cnf ##修改主配置文件使用“:set nu”打印行号
40 [ CA_default ]
41
42 dir = /etc/pki/CA # Where everything is kept
43 certs = $dir/certs # Where the issued certs are kept
44 crl_dir = $dir/crl # Where the issued crl are kept
45 database = $dir/index.txt # database index file.
46 #unique_subject = no # Set to 'no' to allow creation of
47 # several ctificates with same subject.
48 new_certs_dir = $dir/newcerts # default place for new certs.
49
50 certificate = $dir/cacert.pem # The CA certificate
51 serial = $dir/serial # The current serial number
52 crlnumber = $dir/crlnumber # the current crl number
53 # must be commented out to leave a V1 CRL
54 crl = $dir/crl.pem # The current CRL
55 private_key = $dir/private/cakey.pem# The private key
128 [ req_distinguished_name ]
129 countryName = Country Name (2 letter code)
130 countryName_default = CN ##修国家
131 countryName_min = 2
132 countryName_max = 2
133
134 stateOrProvinceName = State or Province Name (full name)
135 stateOrProvinceName_default = beijing ##设置省
136
137 localityName = Locality Name (eg, city)
138 localityName_default = beijing ##设置城市
139
140 0.organizationName = Organization Name (eg, company)
141 0.organizationName_default = sggfu.com Ltd ##设置组织名称
142
143 # we can do this but it is not needed normally :-)
144 #1.organizationName = Second Organization Name (eg, company)
145 #1.organizationName_default = World Wide Web Pty Ltd
146
147 organizationalUnitName = Organizational Unit Name (eg, section)
148 organizationalUnitName_default = tech ##设置部门
:wq
[root@ca ~]# cd /etc/pki/CA/
[root@ca CA]# ls private/
[root@ca CA]# (umask 077;openssl genrsa -out private/cakey.pem 2048) ##生成私钥同时将权限设置为600
Generating RSA private key, 2048 bit long modulus
....................+++
...........................................................................................+++
e is 65537 (0x10001)
[root@ca CA]# ls -l private/ ##验证私钥
总用量 4
-rw-------. 1 root root 1679 1月 2 20:09 cakey.pem
[root@ca CA]#
[root@ca CA]# openssl req -new -x509 -key private/cakey.pem -out cacert.pem -days 3650 ##生成自签证书（根证书）
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
-----
Country Name (2 letter code) [CN]:
State or Province Name (full name) [BeiJing]:
Locality Name (eg, city) [BeiJing]:
Organization Name (eg, company) [sggfu.com]:
Organizational Unit Name (eg, section) [tech]:
Common Name (eg, your name or your server's hostname) []:ca.sggfu.com ##主机名填写CA服务器的主机名
Email Address []:[email protected]
[root@ca CA]# ls -l cacert.pem
-rw-r--r--. 1 root root 1419 1月 2 20:13 cacert.pem
[root@ca CA]#
[root@ca CA]# mkdir -p certs crl newcerts
[root@ca CA]# touch index.txt ##证书索引
[root@ca CA]# echo 00 >serial ##证书序列号
[root@ca CA]# ls
cacert.pem certs crl index.txt newcerts private serial
[root@ca CA]#
3)配置web服务器支持https：
a.为web服务器生成密钥和证书请求：
[root@www ~]# mkdir /usr/local/httpd/conf/ssl
[root@www ~]# cd /usr/local/httpd/conf/ssl/
[root@www ssl]# (umask 077;openssl genrsa 2048 >httpd.key)
[root@www ssl]# scp [email protected]:/etc/pki/tls/openssl.cnf /etc/pki/tls/openssl.cnf ##复制openssl配置文件
[root@www ssl]# openssl req -new -key httpd.key -out httpd.csr
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
-----
Country Name (2 letter code) [CN]:
State or Province Name (full name) [BeiJing]:
Locality Name (eg, city) [BeiJing]:
Organization Name (eg, company) [sggfu.com]:
Organizational Unit Name (eg, section) [tech]:
Common Name (eg, your name or your server's hostname) []:www.sggfu.com ##必须填写web服务器的主机名，注意web虚拟主
机只能有唯一一个站点可以设置为https
Email Address []:[email protected]
Please enter the following 'extra' attributes
to be sent with your certificate request
A challenge password []: ##证书保护的密码短语，直接回车
An optional company name []:
[root@www ssl]#
[root@www ssl]# scp httpd.csr [email protected]:/tmp ##将证书认证请求复制给CA服务器
b.登录到192.168.100.151，为web服务器签发证书：
[root@ca CA]# openssl ca -in /tmp/httpd.csr -out /tmp/httpd.crt -days 3650 ##签发证书httpd.crt，执行中y回车即可
[root@ca CA]# ls /tmp/httpd.c* ##验证
/tmp/httpd.crt /tmp/httpd.csr
[root@ca CA]# scp /tmp/httpd.crt [email protected]:/usr/local/httpd/conf/ssl ##复制证书给web服务器
[root@ca CA]# rm -rf /tmp/httpd.* ##删除证书，避免非法用户获取证书
c.修改web服务器配置文件：登录192.168.100.150
[root@www ~]# cd /usr/local/httpd/conf/extra/
[root@www extra]# cp httpd-ssl.conf httpd-ssl.conf.bak ##备份证书
[root@www extra]# vim httpd-ssl.conf ##修改如下
74 <VirtualHost 192.168.100.150:443>
77 DocumentRoot "/usr/local/httpd/htdocs/sggfu/" ##注意和http的网页根目录一致
78 ServerName www.sggfu.com:443
79 ServerAdmin [email protected]
80 ErrorLog "/usr/local/httpd/logs/error_log"
81 TransferLog "/usr/local/httpd/logs/access_log"
85 SSLEngine on ##确认为on，表示开启https
99 SSLCertificateFile "/usr/local/httpd/conf/ssl/httpd.crt" ##指定证书路径
107 SSLCertificateKeyFile "/usr/local/httpd/conf/ssl/httpd.key" ##指定私钥路径，注意私钥必须小心保管
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[root@www extra]# vim /usr/local/httpd/conf/httpd.conf ##修改主配置文件，调用httpd-ssl.conf
399 Include conf/extra/httpd-ssl.conf
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[root@www extra]# /etc/init.d/httpd restart ##重启服务器
4)共享根证书：
[root@www ~]# cd /usr/local/httpd/htdocs/sggfu/
[root@www sggfu]# scp [email protected]:/etc/pki/CA/cacert.pem cacert.crt ##复制CA服务器的证书（根证书）
[root@www sggfu]# vim index.html ##通过首页共享根证书
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<title>www.sggfu.com</title>
</head>
<body>
<h1>www.sggfu.com</h1>
为了你更好的访问网站，请下载安装<a href="cacert.crt" target="_blank">根证书</a>
</body>
</html>
:wq
5)测试：
http://www.sggfu.com ##下载证书并导入证书
https://www.sggfu.com ##访问测试