LDAP学习笔记之三：389-DS(RHDS) 之TLS配置

一、生成CA证书

这里CA服务器和server是同一台机器，如果不是同一台机器注意两台机器的时区及时间是否一致

[root@ldap-server1 ~]# cd /etc/pki/CA/
[root@ldap-server1 CA]# echo "01" > /etc/pki/CA/serial
[root@ldap-server1 CA]# touch /etc/pki/CA/index.txt
[root@ldap-server1 CA]# (umask 077;openssl genrsa -out private/cakey.pem 2048)
Generating RSA private key, 2048 bit long modulus
.....................+++
...............................................+++
e is 65537 (0x10001)
[root@ldap-server1 CA]# openssl req -new -x509 -key private/cakey.pem -out cacert.pem -days 3650 # openssl req -new -x509 -subj "/C=CN/ST=ShangHai/L=ShangHai/O=IT/OU=IT/CN=ldap-server1.example.com" -key private/cakey.pem -out cacert.pem -days 3650
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) [XX]:CN
State or Province Name (full name) []:ShangHai
Locality Name (eg, city) [Default City]:ShangHai
Organization Name (eg, company) [Default Company Ltd]:IT
Organizational Unit Name (eg, section) []:IT
Common Name (eg, your name or your server's hostname) []:example.com
Email Address []:admin@example.com

二、生成服务器请求证书，389或在RHDS必须在控制台中创建，openLDAP命令行创建

1.点击Manage Certificates

 2.首次点击时会提示输入一个安全密码，务必记住此密码

3. 创建server端请求证书

 4.继续下一步

5.生成请求证书相关内容，点下一步

 6.默认即可

 7.输入安全密码

8.生成请求证书并保存

 9.完成请求证书的创建

 三、CA签署服务端请求证书

[root@ldap-server1 CA]# pwd
/etc/pki/CA
[root@ldap-server1 CA]# cp /root/server.csr .
[root@ldap-server1 CA]# openssl ca -in server.csr -out server.crt -days 3650
Using configuration from /etc/pki/tls/openssl.cnf
Check that the request matches the signature
Signature ok
Certificate Details:
        Serial Number: 1 (0x1)
        Validity
            Not Before: Mar 23 14:54:33 2022 GMT
            Not After : Mar 20 14:54:33 2032 GMT
        Subject:
            countryName               = CN
            stateOrProvinceName       = ShangHai
            localityName              = ShangHai
            organizationName          = dewu
            organizationalUnitName    = Tech
            commonName                = ldap-server1.example.com
        X509v3 extensions:
            X509v3 Basic Constraints: 
                CA:FALSE
            Netscape Comment: 
                OpenSSL Generated Certificate
            X509v3 Subject Key Identifier: 
                E1:32:96:1F:9F:3B:0A:53:53:6E:46:7B:C4:43:01:D4:5D:4C:70:BE
            X509v3 Authority Key Identifier: 
                keyid:74:93:DF:5C:C3:A6:49:B2:CB:2A:AA:05:9C:FE:27:3F:69:C2:B9:89

Certificate is to be certified until Mar 20 14:54:33 2032 GMT (3650 days)
Sign the certificate? [y/n]:y


1 out of 1 certificate requests certified, commit? [y/n]y
Write out database with 1 new entries
Data Base Updated　

可能遇见的问题：

The stateOrProvinceName field needed to be the same in the
CA certificate (ShangHai) and the request (ShangHai)　

原因

1.CA默认使用policy_match策略，要求请求证书和CA证书 countryName stateOrProvinceName organizationName三个字段保持一致，如果不一致会报错
2.当上面三个字段保持一致时，请求证书和CA证书编码不一致时也会报错，CA编码为utf8only　　

解决方法

[root@ldap-server1 CA]# cp /etc/pki/tls/openssl.cnf /etc/pki/tls/openssl.cnf-bak
[root@ldap-server1 CA]# vim /etc/pki/tls/openssl.cnf #将策略修改为policy_anything
 81 #policy         = policy_match
 82 policy          = policy_anything　

四、导入服务端及CA证书

1.导入服务端证书

 

 

 

 

 

 

 2.导入CA证书

 

 

 

 五、启用TLS

控制台启用

提示需要重启服务

 重启服务

[root@ldap-server1 CA]# systemctl restart dirsrv.target  
Enter PIN for Internal (Software) Token: **********   #注意，启用TLS后每次重启都需要输入证书管理时设置的密码

 六、验证

[root@ldap-server1 CA]# ldapsearch -ZZ -x  #-Z是使用TLS请求，-ZZ是强制使用TLS
ldap_start_tls: Connect error (-11)
	additional info: error:14090086:SSL routines:ssl3_get_server_certificate:certificate verify failed (self signed certificate in certificate chain)
[root@ldap-server1 CA]# vim /etc/openldap/ldap.conf  #配置客户端使用证书
TLS_CACERT /etc/openldap/certs/cacert.pem
[root@ldap-server1 CA]# cp /etc/pki/CA/cacert.pem /etc/openldap/certs/ #拷贝CA证书到指定位置
[root@ldap-server1 CA]# ldapsearch -ZZ -x　

七、其他

1.如果我们在控制台添加了server证书，忘记添加CA证书，并且启用了TSL，那么服务就无法启动了，这时候就需要修改配置文件

配置文件：

[root@ldap-server1 ~]#  grep -n  "nsslapd-security" /etc/dirsrv/slapd-server1/dse.ldif
51:nsslapd-security: on   #将on修改为off重启服务即可

2.解决添加TLS后每次重启都输入密码的问题

[root@ldap-server1 ~]# echo 'Internal (Software) Token:admin12345'  > /etc/dirsrv/slapd-server1/pin.txt
[root@ldap-server1 ~]# chmod 600  /etc/dirsrv/slapd-server1/pin.txt

3.控制台导入证书有一定几率会失败，这是就要使用certutil工具命令行导入了　

[root@ldap-server1 ~]# certutil -d /etc/dirsrv/slapd-ldap-server1/ -A -i ca.crt -n CA_CERT  -t CT,CT,CT    #-d 数据目录 -A 追加 -i指定证书 -n给证书设置一个名称 -t 固定写法
[root@ldap-server1 ~]# certutil -d /etc/dirsrv/slapd-ldap-server1/ -A -i ldap-server1.example.com.crt -n SERVE_CERT -t u,u,u