14 Administration
14-34
VPN 3000 Concentrator Series User Guide
Success (TFTP)
If the TFTP transfer is successful, the Manager displays a Success screen.
Figure 14-31: Administration | File Management | TFTP Transfer | Success screen
Continue
To return to the Administration | File Management | TFTP Transfer screen, click Continue.
Error (TFTP)
If the TFTP transfer is unsuccessful for any reason—no such file, incorrect action, remote system
unreachable, TFTP server not running, incorrect server address, etc.—the Manager displays an
Error
screen.
Figure 14-32: Administration | File Management | TFTP Transfer | Error screen
To return to the Administration | File Management | TFTP Transfer screen, click Retry the operation.
To go to the main VPN Concentrator Manager screen, click
Go to main menu.
Administration | Certificate Management
This section of the Manager lets you manage digital certificates:
•
Enrollment: create a certificate request to enroll with a Certificate Authority (CA).
• Installation: install certificates on the VPN Concentrator.
• Certificates: view, delete, configure revocation checking, and generate certificates.
Digital certificates are a form of digital identification used for authentication. CAs issue them in the
context of a Public Key Infrastructure (PKI), which uses public-key / private-key encryption to ensure
security. CAs are trusted authorities who “sign” certificates to verify their authenticity. The systems on
each end of the VPN tunnel must have trusted certificates from the same CA, or from different CAs in a
hierarchy of trusted relationships; e.g., “A” trusts “B,” and “B” trusts “C,” therefore “A” trusts “C.”
CAs issue root certificates (also known as trusted or signing certificates). They may also issue
subordinate trusted certificates. Finally, CAs issue identity certificates, which are the certificates for
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