Cisco AIM-VPN - DES/3DES VPN Data Encryption AIM Module User Manual download pdf

Q&A

VPN Modules for Cisco 1841 and Cisco 2800 and 3800 Series

Integrated Services Routers

OVERVIEW

Q. What is a VPN?

A. A VPN, or virtual private network, delivers the benefits of private network security, manageability, and quality of service (QoS)

to a public network, such as the Internet, while reducing costs and increasing flexibility.

Q. What is IP Security (IPsec)?

A. IPsec is an industrywide standard for helping ensure the privacy, integrity, and authenticity of information crossing public IP

networks.

Q. What is the Advanced Encryption Standard (AES)?

A. Cisco Systems

supports AES in addition to the Data Encryption Standard (DES) and Triple DES (3DES) supported in Cisco IOS

Software Release 12.2(13)T with IPsec. AES is privacy transform for IPsec and Internet Key Exchange (IKE). It uses a variable key

length; the algorithm can specify a 128-bit key (default), a 192-bit key, or a 256-bit key. The AES feature adds support for the new

AES encryption standard, with Cipher Block Chaining (CBC) mode, to IPsec.

The National Institute of Standards and Technology (NIST) created AES as a new Federal Information Processing Standard (FIPS)

publication. Computer scientists at the National Institute of Standards and Technology , an agency of the Commerce Department’s

Technology Administration, organized an international competition to develop a strong information encryption formula to protect

sensitive information in federal computer systems. Researchers from 12 countries worked on the development of advanced encoding

methods during the global competition, and NIST invited the worldwide cryptographic community to “attack” the encryption formulas

in an attempt to break the codes. The standard selected was Rijndael, developed by for AES. The Rijndael developers are Belgian

cryptographers Joan Daemen (pronounced Yo’-ahn Dah’-mun) and Vincent Rijmen (pronounced Rye’-mun), both. Both are highly

regarded experts within the international cryptographic community. For more information about details on AES, refer to the NIST

Website:

http://csrc.nist.gov/encryption/aes/

Q. What are Cisco IOS WebVPN and Secure Sockets Layer (SSL) VPN?

A. SSL-based VPN and Cisco IOS WebVPN comprise an emerging technology that provides remote-access connectivity from almost

any Internet-capable location using a Web browser and its native SSL encryption. SSL VPN provides the flexibility to support secure

access for all users, regardless of the endpoint host from which they are establishing the connection. If application access requirements

are modest, SSL VPN does not require a VPN client to be preinstalled on the endpoint host.

Q. What do I need to activate SSL VPN or Cisco IOS WebVPN on my Cisco IOS Software router?

A. The Cisco IOS WebVPN/SSL VPN comprehensive feature set is available with Advanced Security images and higher starting with

Cisco IOS Software Release 12.4(6)T (the Base IP image does not include this feature set). Cisco IOS WebVPN is not yet supported

on a mainline train (General Deployment or Limited Deployment). All SSL VPN and Cisco IOS WebVPN features are included in a

single, cost-effective license that can be purchased separately.

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Cisco AIM-VPN - DES/3DES VPN Data Encryption AIM Module User Manual

Browse online or download User Manual for Networking Cisco AIM-VPN - DES/3DES VPN Data Encryption AIM Module. VPN Modules for Cisco 1841, 2800 and 3800 Series Integrated

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Cisco AIM-VPN - DES/3DES VPN Data Encryption AIM Module User Manual

Browse online or download User Manual for Networking Cisco AIM-VPN - DES/3DES VPN Data Encryption AIM Module. VPN Modules for Cisco 1841, 2800 and 3800 Series Integrated

Summary of Contents

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