P-660HWP-Dx User’s Guide
35
C
H A P T E R
13
Certificates
This chapter gives background information about public-key certificates and explains how to
use them.
13.1 Certificates Overview
The P-660HWP-Dx can use certificates (also called digital IDs) to authenticate users.
Certificates are based on public-private key pairs. A certificate contains the certificate owner’s
identity and public key. Certificates provide a way to exchange public keys for use in
authentication.
A Certification Authority (CA) issues certificates and guarantees the identity of each
certificate owner. There are commercial certification authorities like CyberTrust or VeriSign
and government certification authorities. You can use the P-660HWP-Dx to generate
certification requests that contain identifying information and public keys and then send the
certification requests to a certification authority.
When using public-key cryptology for authentication, each host has two keys. One key is
public and can be made openly available; the other key is private and must be kept secure.
Public-key encryption for authentication works as follows.
1
Tim wants to send a private message to Jenny. Tim generates a public-private key pair.
What is encrypted with one key can only be decrypted using the other.
2
Tim keeps the private key and makes the public key openly available.
3
Tim uses his private key to encrypt the message and sends it to Jenny.
4
Jenny receives the message and uses Tim’s public key to decrypt it.
5
Additionally, Jenny uses her own private key to encrypt a message and Tim uses Jenny’s
public key to decrypt the message.
The P-660HWP-Dx uses certificates based on public-key cryptology to authenticate users
attempting to establish a connection. The method used to secure the data that you send through
an established connection depends on the type of connection. For example, a VPN tunnel
might use the triple DES encryption algorithm.
The certification authority uses its private key to sign certificates. Anyone can then use the
certification authority’s public key to verify the certificates.
A certification path is the hierarchy of certification authority certificates that validate a
certificate. The P-660HWP-Dx does not trust a certificate if any certificate on its path has
expired or been revoked.
Summary of Contents for 802.11g HomePlug AV ADSL2+ Gateway P-660HWP-Dx
Page 2: ......
Page 7: ...Safety Warnings P 660HWP Dx User s Guide 39 ...
Page 8: ...Safety Warnings P 660HWP Dx User s Guide 40 ...
Page 10: ...Contents Overview P 660HWP Dx User s Guide 36 ...
Page 20: ...Table of Contents P 660HWP Dx User s Guide 44 ...
Page 32: ...List of Tables P 660HWP Dx User s Guide 40 ...
Page 33: ...35 PART I Introduction Introducing the P 660HWP Dx 35 Introducing the Web Configurator 43 ...
Page 34: ...36 ...
Page 42: ...Chapter 1 Introducing the P 660HWP Dx P 660HWP Dx User s Guide 42 ...
Page 56: ...Chapter 2 Introducing the Web Configurator P 660HWP Dx User s Guide 48 ...
Page 58: ...36 ...
Page 78: ...Chapter 4 Bandwidth Management Wizard P 660HWP Dx User s Guide 54 ...
Page 80: ...36 ...
Page 98: ...Chapter 5 WAN Setup P 660HWP Dx User s Guide 52 ...
Page 142: ...Chapter 8 Powerline P 660HWP Dx User s Guide 42 ...
Page 156: ...36 ...
Page 176: ...Chapter 11 Firewall Configuration P 660HWP Dx User s Guide 54 Figure 99 Firewall Edit Rule ...
Page 190: ...Chapter 11 Firewall Configuration P 660HWP Dx User s Guide 68 ...
Page 194: ...Chapter 12 Content Filtering P 660HWP Dx User s Guide 72 ...
Page 218: ...36 ...
Page 222: ...Chapter 14 Static Route P 660HWP Dx User s Guide 38 ...
Page 238: ...Chapter 16 Dynamic DNS Setup P 660HWP Dx User s Guide 38 ...
Page 250: ...Chapter 17 Remote Management Configuration P 660HWP Dx User s Guide 46 ...
Page 262: ...Chapter 18 Universal Plug and Play UPnP P 660HWP Dx User s Guide 58 ...
Page 264: ...36 ...
Page 270: ...Chapter 19 System P 660HWP Dx User s Guide 40 ...
Page 288: ...Chapter 20 Logs P 660HWP Dx User s Guide 52 ...
Page 294: ...Chapter 21 Tools P 660HWP Dx User s Guide 40 ...
Page 304: ...36 ...
Page 340: ...Appendix C Internal SPTGEN P 660HWP Dx User s Guide 50 ...
Page 364: ...Appendix E IP Subnetting P 660HWP Dx User s Guide 42 ...
Page 368: ...Appendix F Command Interpreter P 660HWP Dx User s Guide 38 ...
Page 388: ...Appendix K Legal Information P 660HWP Dx User s Guide 38 ...
Page 394: ...Appendix L Customer Support P 660HWP Dx User s Guide 40 ...
Page 402: ...Index P 660HWP Dx User s Guide 42 ...