OpenLDAP : LDAP over SSL/TLS2020/05/11 |
Configure LDAP over SSL/TLS to use secure encrypted connection.
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[1] | |
[2] | Configure LDAP Server. |
root@dlp:~#
cp /etc/ssl/private/server.key \ /etc/ssl/private/server.crt \ /etc/ssl/certs/ca-certificates.crt \ /etc/ldap/sasl2/ root@dlp:~# chown openldap. /etc/ldap/sasl2/server.key \
/etc/ldap/sasl2/server.crt \ /etc/ldap/sasl2/ca-certificates.crt
root@dlp:~#
vi mod_ssl.ldif # create new dn: cn=config changetype: modify add: olcTLSCACertificateFile olcTLSCACertificateFile: /etc/ldap/sasl2/ca-certificates.crt - replace: olcTLSCertificateFile olcTLSCertificateFile: /etc/ldap/sasl2/server.crt - replace: olcTLSCertificateKeyFile olcTLSCertificateKeyFile: /etc/ldap/sasl2/server.key ldapmodify -Y EXTERNAL -H ldapi:/// -f mod_ssl.ldif SASL/EXTERNAL authentication started SASL username: gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth SASL SSF: 0 modifying entry "cn=config"root@dlp:~# systemctl restart slapd
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[3] | Configure LDAP Client. If you'd like to make sure the connection between LDAP server and client is encrypted, use tcpdump or other network capture software on LDAP server. |
root@node01:~#
vi /etc/nslcd.conf # line 29: add ssl start_tls tls_reqcert allow
root@node01:~#
logout node01 login: focal # LDAP user Password: Welcome to Ubuntu 20.04 LTS (GNU/Linux 5.4.0-26-generic x86_64) * Documentation: https://help.ubuntu.com * Management: https://landscape.canonical.com * Support: https://ubuntu.com/advantage System information as of Mon 11 May 2020 05:03:25 PM JST System load: 0.0 Processes: 127 Usage of /: 9.1% of 24.54GB Users logged in: 0 Memory usage: 4% IPv4 address for enp1s0: 10.0.0.51 Swap usage: 0% Last login: Mon May 10 16:56:03 JST 2020 on ttyS0 focal@node01:~$ # logined |
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