Appendix F About Security Certificate Warnings
What is a security certificate?
Sites that employ secure TCP/IP (Internet) connections include a certificate that confirms that users
are connecting to a legitimate site and are not being redirected without their knowledge. Certificates
are issued by trusted third parties called Certificate Authorities (CAs) and contain essential details
about a site that must match the information supplied to your Web browser.
Why do I receive a warning when I access the login screen on the Digital KVM via IP?
As it redirects you to a secure (SSL) session by default, the login screen may generate a warning from
your Web browser or the VNC Java client for two different reasons. First, the CA that has issued the
certificate on DIGITUS
®
behalf may not yet be recognized as a trusted source by the computer you are
using to access the Digital KVM via IP. Second, since the unit could be configured in a number
different ways, it is impossible to supply a generic certificate that will match your exact network
settings.
Is my data safe?
Yes. The security certificate does not affect encryption effectiveness in any way, nor does it make the
Digital KVM via IP any more vulnerable to outside attacks.
Can I prevent the warning from occurring?
Yes. You have two options that may prevent the warning from occurring. First, if the Web browser
you are using offers the option to ignore the warning for future visits, the browser will no longer
generate a warning if that option is selected. Second, if you install the certificate from the KVM onto
the remote computer (see below) and if the unit is configured with a domain name ending
in .com, .net, .org, .gov, .edu, .us, .ca, .uk, .jp, or .tw (i.e. remotecontrol.mydomain.net) then the
warning should no longer occur.
Installing the new certificate…
The following instructions detail how to install the certificate from the Digital KVM via IP onto your
local computer (in this case, running Windows XP and Internet Explorer).
1. Open your Web browser and go to the Digital KVM via IP login screen. Click the update security
certificate link.
2. When prompted, choose Open.
3. A Window will appear that offers information about the certificate. Click Install Certificate.
4. The Certificate Import Wizard will appear. Select Automatically select the certificate store…
(default) and click Next. When the next window appears, click Finish.
5. A confirmation dialog will appear asking you if you wish to install the certificate. Click Yes.
6. A message should appear saying the import was successful. Click OK.
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