HP 250m Print Server for Fast Ethernet manual SSL/TLS Client Certificates and Name Verification

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Jetdirect verifies that R2 has signed the server’s certificate. It also verifies R2’s certificate (e.g., it has not expired and so on) and makes sure that R2’s certificate was signed by RootCA. This “walking the chain” functionality is very important for devices with limited storage space for certificates – like HP Jetdirect.

SSL/TLS Client: Certificates and Name Verification

You may remember that having “https://192.168.0.20” in the URL of the browser resulted in Internet Explorer 7 reporting a certificate problem but that “https://NPIC1F319.example.internal” ended up with everything okay. How the SSL/TLS client authenticates the SSL/TLS server is very important and is unfortunately mired in practical deployment problems. We’ll try to sort through it all!

The certificate itself has two very important fields that need to be discussed

•Subject

•SubjectAltName

The subject field is where the Common Name is stored. What is the Common Name? Well, that is a good question since it was never really properly defined. The most likely thing for HTTPS is that it is the Fully Qualified Domain Name. Let’s look at a trace where a browser has established an HTTPS connection with the Jetdirect device. Refer to Figure 38 – Subject.

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Contents Introduction WhitepaperHttp Application What is SSL/TLS?Application Changes Https DecodedHttp Session More Info Https Session Lock Icon Certificate Details IE6 Security Alert Digital CertificatesIE7 Certificate Error IE7 Certificate Error Certificate Information Public Key Infrastructure and Public Key Certificate BasicsSymmetric Cryptography Asymmetric Cryptography Digital Signature Digital Signature Verification Certificate Authority Public Key Certificates Self-Signed Certificate SSL/TLS Protocol Structures SSL/TLS Protocol BasicsClient Hello Server Hello Server Certificate Verification Keying Material Client Finished Server Finished Using Https with HP JetdirectCA Heirarchy Network Diagram Page Page Under the heading Jetdirect Certificate, press Configure… Page Page Page Page Page Page Page Page Page Page Page Save it Go to Tools and click Internet Options Click Certificates Click Import… Click Next Select the file Click Next Page Page Page Page Page Detailed Look at the SSL/TLS Connection Page Page Page Page Check for server certificate revocation is not selected Page Page SSL/TLS Server Settings HP Jetdirect as an SSL/TLS Client Page Page Page Page Select R2 and hit Export… Click Next Select DER. Click Next Save it Save it Click Finish Page Select the file. Click Finish Click OK Page Same message. What did we do wrong? Page Page We use the DNS name and try again Success Page CA Hierarchy SSL/TLS Client Understanding Certificate ChainsPage RootCA Incorrect HP Jetdirect CA Configuration Correct HP Jetdirect CA Configuration Walking the Chain SSL/TLS Client Certificates and Name Verification Subject SubjectAltName Page Page Page IPP over SSL/TLS Click Next Select a network printer… Page Page Print a test Yep we have our print data protected by SSL/TLS Embedded Devices and Digital Certificates HP Jetdirect Certificate GuidelinesSummary Which HP Jetdirect Products Support SSL/TLS?