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User's Manual

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NSA-2401 User’s Guide
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CHAPTER 11
Maintenance Screens
11.1 Overview
This chapter introduces the NSA Maintenance screens.
11.1.1 What You Can Do In The Maintenance Screens
• View the NSA system logs. See Section 11.2 on page 230 for details.
• Manage the NSA configuration file. See Section 11.3 on page 237 for details.
• Configure HTTPS and the NSA’s SSL certificate. See Section 11.4 on page 239 for
details.
• Upload new firmware. See Section 11.5 on page 241 for details.
• Set the power management settings. See Section 11.6 on page 242 for details.
• Restart or turn off your NSA. See Section 11.7 on page 245 for details.
11.1.2 What You Need to Know About The Maintenance Screens
HTTPS
HyperText Transfer Protocol over Secure Socket Layer, or HTTP over SSL is a web protocol
that encrypts and decrypts web pages. Secure Socket Layer (SSL) is an application-level
protocol that enables secure transactions of data by ensuring confidentiality (an unauthorized
party cannot read the transferred data), authentication (one party can identify the other party)
and data integrity (you know if data has been changed).
Public Key Certificate
Public key certificates are used by web browsers to ensure that a secure web site is legitimate.
When a certificate authority such as VeriSign, Comodo, or Network Solutions, to name a few,
receives a certificate request from a website operator, they confirm that the web domain and
contact information in the request match those on public record with a domain name registrar.
If they match, then the certificate is issued to the website operator, who then places it on his
site to be issued to all visiting web browsers to let them know that the site is legitimate.
Syslog Server
The syslog protocol is built around data logging for the purposes of keeping records and
analysis. On a typical network the syslog daemon can be configured to send system logs to a
central online repository known as a syslog server. This allows the network administrators to
quickly access and examine them without having to go to every machine on the network.