Owners manual

9: Administration
SGX 5150 IoT Device Gateway User Guide 106
Notes:
 Ensure that the certificate is formatted properly with a valid open and close tag.
 Ensure that the Private Key is associated to the selected certificate and that it is
formatted properly with a valid open and close tag.
 If the New Certificate field is set to None, the certificate is not supported.
6. Click Submit.
CSR (Certificate Signing Request)
The SGX 5150 unit uses the Secure Socket Layer (SSL) protocol for any encrypted network traffic
between itself and a connected client. During the connection establishment the SGX 5150 unit has
to expose its identity to a client using a cryptographic certificate. Upon leaving the factory this
certificate and the underlying secret key is the same for all SGX 5150 units and will not match the
network configuration where it is installed. The certificate’s underlying secret key is also used for
securing the SSL handshake. Leaving the default certificate unmodified is all right in most
circumstances and is necessary only if the network facility is vulnerable to man-in-the-middle
attack.
It is possible to generate and install a new base64 encoded x.509 certificate that is unique for a
particular SGX 5150 unit. The SGX 5150 unit is able to generate a new cryptographic key and the
associated Certificate Signing Request (CSR) that needs to be certified by a certification authority
(CA).
To create and install an SSL certificate, perform the following steps.
1. Click Administration > SSL > CSR (Certificate Signing Request). The Certificate Signing
Request page displays.
2. Modify the following fields:
Table 9-39 SSL CSR (Certificate Signing Request)
3. Click Submit to initiate the Certificate Signing Request generation. After a few moments, the
CSR file created will appear.
4. Click the CSR file to download it if desired.
Field Description
Country (2 Letter code) Enter the two-letter ISO code (e.g., US for the United States) for the country
where the organization is located.
State/Province Enter the state or province where the organization is located.
Locality (City) Enter the city where the organization is located.
Organization Enter the organization name to which the SGX 5150 unit belongs.
Organization Unit Enter the department within the organization to which the SGX 5150 unit
belongs.
Common Name Enter the network name of the SGX 5150 unit once it is installed in the user’s
network (usually the fully qualified domain name). It is identical to the name that
is used to access the SGX 5150 unit with a web browser without the prefix http://
. In case the name given here and the actual network name differ, the browser
will pop up a security warning when the SGX 5150 unit is accessed using
HTTPS.
Key length Select the key length: 2048 or 4096.