CA

—以下在CA服务器端配置—IP：80.110

1、 确认安装了openssl软件

rpm -qa | grep openssl
openssl-devel-1.0.1e-15.el6.x86_64
openssl-1.0.1e-15.el6.x86_64

vi /etc/pki/tls/openssl.cnf openssl服务的配置文件
[ CA_default ]

dir = /etc/pki/CA 工作目录 # Where everything is kept(保存)
certs = $dir/certs 颁发了的证书 # Where the issued（发行者）certs are kept
crl_dir = $dir/crl 吊销了的证书 # Where the issued crl are kept
database = $dir/index.txt 索引文件 # database index file.
new_certs_dir = $dir/newcerts 新证书 # default place for new certs.

certificate = $dir/cacert.pem 根证书 # The CA certificate
serial = $dir/serial 序列号 # The current serial number
crlnumber = $dir/crlnumber # the current crl number
crl = $dir/crl.pem # The current CRL
private_key = $dir/private/cakey.pem# The private key
RANDFILE = $dir/private/.rand # private random number file

x509_extensions = usr_cert # The extentions to add to the cert

—修改以下配置----
[ req_distinguished_name ] L128

countryName = Country Name (2 letter code)
countryName_default = CN

stateOrProvinceName = State or Province Name (full name)
stateOrProvinceName_default = JiangSu

localityName = Locality Name (eg, city)
localityName_default = NanJing

commonName = NJXT Certificate Authority
commonName_max = 64

emailAddress = test@126.com
emailAddress_max = 64

cd /etc/pki/CA/
echo 01 > serial
touch index.txt //新建一个索引文件

openssl genrsa -out private/cakey.pem -des3 2048 //生成私钥必须输入密码

openssl req -new -x509 -key private/cakey.pem -days 365 > cacert.pem //生成根证书需要输以上密码 一直回车

yum install httpd //通过WWW服务器共享出去

cp cacert.pem /var/www/html/ //把根证书发布出去

cd /var/www/html/
mv cacert.pem ROOTCA.pem

------以下在邮件服务器上配置----------IP:80.111
openssl genrsa -out imaps-ser.key 1024 //生成私钥文件

openssl req -new -key imaps-ser.key -out imaps-svr.csr //生成签名请求文件要和CA相同

Country Name (2 letter code) [XX]:CN
State or Province Name (full name) []:JiangSu
Locality Name (eg, city) [Default City]:NanJing

Common Name (eg, your name or your server’s hostname) []:localhost.localdomain //写主机名

其它直接回车……

scp imaps-svr.csr root@192.168.80.100:/root/ //把签名请求文件传送给CA服务器

--------以下在CA上操作---------
openssl req -in imaps-svr.csr -noout -text //查看一imaps-svr.csr的内容

openssl ca -in imaps-svr.csr -out imaps-svr.crt //为客户端生成证书，全部回答Y

scp imaps-svr.crt root@192.168.80.101:/root //把证书传送给客户端

-------以下在邮件服务器上操作------

vi /etc/dovecot/dovecot.conf

ssl = yes

cp imaps-svr.crt /etc/ssl/certs/dovecot.pem //把数字证书放到指定位置
mkdir /etc/ssl/private
cp imaps-ser.key /etc/ssl/private/dovecot.pem //把私钥放到指定位置

service dovecot restart

netstat -anpt | grep dovecot //993 和 995 在监听

-----------以下在用户侧进行测试---------IP：80.105
yum install mutt

mkdir .mutt

cd .mutt

vi muttrc

set folder=imaps://mail.lq.com
set spoolfile=imaps://mail.lq.com
set certificate_file=/root/.mutt/testca.CRT

vi /etc/resolv.conf //使客户端能够解析mail.aa.com
nameserver 192.168.80.111

输入 mutt 测试IMAPS的效果。