Optimum SSL

Certificate Installation

Importing a Server Certificate and Chain into the SonicWALL SSL Offloader

Chained Certificates

All SonicWALL SSL Offloaders support chained certificates. Once the certificates are unzipped into multiple certificates prior to importing into the SonicWALL SSL Offloader, the certificate will need to be imported using the chained certificate commands. The certificates will have a root certificate, and an intermediate CA certificate in addition to the server/domain certificate.

EXAMPLE - Instructions for using OpenSSL

Now that you have received the certificate, you will need to unzip the certificates up into the root, intermediate and the server certificates so that you can enter them into the SonicWALL SSL Offloader.

Start by unzipping the 3 certificates, you will only need the two Intermediate CA files and your Site/Domain certificates. i.e.

Launch openssl.exe. This application was installed at the same time and in the same location as the SonicWALL configuration manager. You can also run the install and just install OpenSSL by choosing the 'Custom Installation' option.

Once launched, open the UTNAddTrustServerCA.crt certificate provided with your site certificate and copy the certificate content to your clipboard. Open a text editor. Paste the information on the clipboard into this text file. It should look like this:

"-----BEGIN CERTIFICATE-----"
and
"-----END CERTIFICATE-----"

Next, open the second intermediate certificate, OptimumSSLCA.crt. Repeat the process and paste into the same document. Your final doc should look something like this:

-----BEGIN CERTIFICATE-----
MIIEyDCCBDGgAwIBAgIEAgACmzANBgkqhkiG9w0BAQUFADBFQGEwJV
UzEYMBYGA1UEChMPR1RFIENvcnBvcmF0aW9uMRwwGgYDVQUgQ3liZXJU
.....
zs1x+3QCB9xfFScIUwd21LkG6cJ3UB7KybDCRoGAAK1EqlzWINlVqvaDj
vA2AOurM+5pX7XilNj1W6tHndMo0w8+xUengDA==
-----END CERTIFICATE-----

-----BEGIN CERTIFICATE-----
MIIB+jCCAWMCAgGjMA0GCSqGSIb3DQEBBAUAMEUxCzAJMRgwFgYD
VQQKEw9HVEUgQ29ycG9yYXRpb24xHDAaBgNVBAMTEydXN0IFJv
.....
IjeaY8JIILTbcuPI9tl8vrGvU9oUtCG41tWW4/5ODFlitppKqXH/9Apy
bW1EDp3zdHSo1TRJ6V6e6bR64eVaH4QwnNOfpSXY
-----END CERTIFICATE-----

The Site/Domain certificate is the server certificate.

The intermediate CA file is the intermediary certificate.

Save these files (e.g. C:\server.pem and C:\inter.pem)

Verify the certificate information with openssl:
x509 -in C:\server.pem -text
(and)
x509 -in :C\inter.pem -text

EXAMPLE - Setting Up the Chained Certificates

Now that you have the proper certificates, you start by loading the certificates into certificate objects. These separate certificate objects are then loaded into a certificate group. This example demonstrates how to load two certificates into individual certificate objects, create a certificate group, and enable the use of the group as a certificate chain. The name of the Transaction Security device is myDevice. The name of the secure logical server is server1. The name of the PEM-encoded, CA generated certificate is server.pem; the name of the PEM-encoded certificate is inter.pem. The names of the recognized and local certificate objects are trustedCert and myCert, respectively. The name of the certificate group is CACertGroup.

Start the configuration manager as described in the manual.

Attach the configuration manager and enter Configuration mode. (If an attach or configuration level password is assigned to the device, you are prompted to enter any passwords.)

inxcfg> attach myDevice
inxcfg> configure myDevice
(config[myDevice])>

Enter SSL Configuration mode and create an intermediary certificate named CACert, entering into Certificate Configuration mode. Load the PEM-encoded file into the certificate object, and return to SSL Configuration mode.
(config[myDevice])> ssl
(config-ssl[myDevice])> cert myCert create
(config-ssl-cert[CACert])> pem inter.pem
(config-ssl-cert[CACert])> end
(config-ssl[myDevice])>

Enter Key Association Configuration mode, load the PEM-encoded CA certificate and private key files, and return to SSL Configuration mode.
(config-ssl[myDevice])> keyassoc localKeyAssoc create
(config-ssl-keyassoc[localKeyAssoc])> pem server.pem key.pem
(config-ssl-keyassoc[localKeyAssoc])> end
(config-ssl[myDevice])>

Enter Certificate Group Configuration mode, create the certificate group CACertGroup, load the certificate object CACert, and return to SSL Configuration mode.
(config-ssl[myDevice])> certgroup CACertGroup create
(config-ssl-certgroup[CACertGroup])> cert myCert
(config-ssl-certgroup[CACertGroup])> end
(config-ssl[myDevice])>

Enter Server Configuration mode, create the logical secure server server1,assign an IP address, SSL and clear text ports, a security policy myPol, the certificate group CACertGroup, key association localKeyAssoc, and exit to Top Level mode.
(config-ssl[myDevice])> server server1 create
(config-ssl-server[server1])> ip address 10.1.2.4 netmask 255.255.0.0
(config-ssl-server[server1])> sslport 443
(config-ssl-server[server1])> remoteport 81
(config-ssl-server[server1])> secpolicy myPol
(config-ssl-server[server1])> certgroup chain CACertGroup
(config-ssl-server[server1])> keyassoc localKeyAssoc
(config-ssl-server[server1])> end
(config-ssl[myDevice])> end
(config[myDevice])> end
inxcfg>

Save the configuration to flash memory. If it is not saved, the configuration is lost during a power cycle or if the reload command is used.
inxcfg> write flash myDevice
inxcfg>

Resources

Additional documents and technical notes on SonicWALL SSL can be found online at http://www.sonicwall.com