Problème de TLS avec Serveur CUPS

Bonjour,

Je viens de mettre en place mon serveur CUPS sur debian8.

Lorsque je fait cette commande depuis un client Windows pour une impression direct : lpr -S ip-de-cups -P nom-de-la-fil C:\nomdemonfichier

Voici l’erreur : Error: print server did not accept request. Job aborted.

Voici les logs de CUPS :

Unable to encrypt connection from 15.21.226.129 - An unexpected TLS packet was received.

E [24/Oct/2017:11:34:28 +0200] Unable to encrypt connection from 15.21.226.129 - An unexpected TLS packet was received.

E [24/Oct/2017:11:46:57 +0200] Unable to encrypt connection from 15.21.226.129 - An unexpected TLS packet was received.

Le TLS est bien activé dans le fichier de cupsd.conf

Voici le contenu :

LogLevel warn
MaxLogSize 0

ServerName cups
#Encryption Always
#Listen localhost:631
Listen /var/run/cups/cups.sock
Listen 15.21.225.11:631
Listen 15.21.225.11:515
SSLListen 0.0.0.0:632
Browsing On
BrowseLocalProtocols dnssd
DefaultAuthType Basic
WebInterface Yes

Order allow,deny
Allow all

<Location /admin>
Order allow,deny
Allow all
Encryption Required

<Location /admin/conf>
AuthType Default
Require user @SYSTEM
Order allow,deny
Allow all


JobPrivateAccess default
JobPrivateValues default
SubscriptionPrivateAccess default
SubscriptionPrivateValues default

Order deny,allow
Encryption Required

<Limit Send-Document Send-URI Hold-Job Release-Job Restart-Job Purge-Jobs Set-Job-Attributes Create-Job-Subscription Renew-Subscription Cancel-Subscription Get-Notifications $ Require user @OWNER @SYSTEM Order deny,allow Encryption Required AuthType Default Require user @SYSTEM Order deny,allow Encryption Required <Limit Pause-Printer Resume-Printer Enable-Printer Disable-Printer Pause-Printer-After-Current-Job Hold-New-Jobs Release-Held-New-Jobs Deactivate-Printer Activate-Printer Res$ AuthType Default Require user @SYSTEM Order deny,allow Require user @OWNER @SYSTEM Order deny,allow Order deny,allow JobPrivateAccess default JobPrivateValues default SubscriptionPrivateAccess default SubscriptionPrivateValues default AuthType Default Order deny,allow <Limit Send-Document Send-URI Hold-Job Release-Job Restart-Job Purge-Jobs Set-Job-Attributes Create-Job-Subscription Renew-Subscription Cancel-Subscription Get-Notifications $ AuthType Default Require user @OWNER @SYSTEM Order deny,allow Encryption Required AuthType Default Require user @SYSTEM Order deny,allow Encryption Required <Limit Pause-Printer Resume-Printer Enable-Printer Disable-Printer Pause-Printer-After-Current-Job Hold-New-Jobs Release-Held-New-Jobs Deactivate-Printer Activate-Printer Res$ AuthType Default Require user @SYSTEM Order deny,allow Encryption Required AuthType Default Require user @OWNER @SYSTEM Order deny,allow Encryption Required Order deny,allow Encryption Required DefaultEncryption Required ServerCertificate /etc/cups/ssl/server.crt ServerKey /etc/cups/ssl/server.key

Merci d’avance
Cordialement,