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Readme.md
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Readme.md
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# SSL
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## Démonstration préalable:
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lancer un wireshark sur le poste client, avec comme filtre _port 389_
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faire une requète ldap authentifiée. Constater la présence du mot de passe et DN de connexion en clair
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## Création du certificat
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### Certificat autosigné
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Suivre la procédure slide 97.
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⚠️ Bien faire attention aux permissions sur les fichiers, l'utilisateur _ldap_ doit pouvoir les lire.
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### Certificat letsencrypt
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```bash
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systemctl stop httpd
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dnf install certbot -y
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certbot certonly --standalone -d CHANGEME.formation.opendoor.fr -m formation@opendoor.fr --agree-tos --test-cert
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# répondre N à la question
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systemctl start httpd
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```
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⚠️ Attention, pour que le certificat (de test) soit reconnu, il faudra que le client télécharge la clé publique de la CA:
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```bash
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curl https://letsencrypt.org/certs/staging/letsencrypt-stg-root-x1.pem -L >> /etc/openldap/certs/ca.pem
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echo TLS_CACERT /etc/openldap/certs/ca.pem >> /etc/openldap/ldap.conf
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```
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Attention également aux permissions. L'utilisateur _ldap_ doit pouvoir lire les différents fichiers:
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```bash
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chgrp -R ldap chgrp ldap /etc/letsencrypt/{archive,live}
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chmod -R g+rX /etc/letsencrypt/{archive,live}
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```
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```ldif
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dn: cn=config
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changetype: modify
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replace: olcTLSCipherSuite
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olcTLSCipherSuite: ECDHE-RSA-AES256-SHA384:AES256-SHA256:!RC4:HIGH:!MD5:!EDH:!EXP:!SSLV2:!eNULL
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-
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replace: olcTLSProtocolMin
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olcTLSProtocolMin: 3.4
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-
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replace: olcTLSCACertificateFile
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olcTLSCACertificateFile: /etc/openldap/certs/ca.pem
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#LETsEncrypt: olcTLSCACertificateFile: /etc/letsencrypt/live/CHANGEME.formation.opendoor.fr/fullchain.pem
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-
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replace: olcTLSCertificateFile
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olcTLSCertificateFile: /etc/openldap/certs/cert.pem
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#LETsEncrypt: olcTLSCertificateFile: /etc/letsencrypt/live/CHANGEME.formation.opendoor.fr/fullchain.pem
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-
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replace: olcTLSCertificateKeyFile
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olcTLSCertificateKeyFile: /etc/openldap/certs/key.pem
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#LETsEncrypt: olcTLSCertificateKeyFile: /etc/letsencrypt/live/CHANGEME.formation.opendoor.fr/privkey.pem
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```
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## Configurer le client
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dans le fichier /etc/openldap/ldap.conf modifier l'_URI_, _TLS_REQCERT_ et _TLS_CACERT_
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## Test
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On doit pouvoir se connecter de manière sécurisé au serveur
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Wireshark ne doit voir passer que des paquets TLS 1.3 application_data
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ssl.ldif
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ssl.ldif
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# Mise en œuvre SSL
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dn: cn=config
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changetype: modify
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replace: olcTLSCertificateFile
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olcTLSCertificateFile: CHANGEME
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-
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replace: olcTLSCertificateKeyfile
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olcTLSCertificateKeyfile: CHANGEME
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-
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replace: olctlsverifyclient
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olctlsverifyclient: never
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-
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replace: olctlscacertificatefile
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olctlscacertificatefile: CHANGEME
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16
ssl_le.ldif
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ssl_le.ldif
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dn: cn=config
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changetype: modify
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replace: olcTLSCipherSuite
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olcTLSCipherSuite: ECDHE-RSA-AES256-SHA384:AES256-SHA256:!RC4:HIGH:!MD5:!EDH:!EXP:!SSLV2:!eNULL
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-
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replace: olcTLSProtocolMin
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olcTLSProtocolMin: 3.4
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-
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replace: olcTLSCACertificateFile
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olcTLSCACertificateFile: /etc/letsencrypt/live/CHANGEME.formation.opendoor.fr/fullchain.pem
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-
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replace: olcTLSCertificateFile
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olcTLSCertificateFile: /etc/letsencrypt/live/CHANGEME.formation.opendoor.fr/fullchain.pem
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-
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replace: olcTLSCertificateKeyFile
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olcTLSCertificateKeyFile: /etc/letsencrypt/live/CHANGEME.formation.opendoor.fr/privkey.pem
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