[8594] in cryptography@c2.net mail archive

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Re: 802.11 Wired Equivalent Privacy (WEP) attacks

daemon@ATHENA.MIT.EDU (David Wagner)
Tue Feb 13 20:34:35 2001

To: cryptography@c2.net
From: daw@mozart.cs.berkeley.edu (David Wagner)
Date: 10 Feb 2001 05:23:55 GMT
Message-ID: <962j9b$bd5$1@abraham.cs.berkeley.edu>
Reply-To: daw@cs.berkeley.edu (David Wagner)

Arnold G. Reinhold wrote:
>Thus there is a need for a short term remedy that can work with the 
>existing standard.

Maybe the easiest short term remedy that does not require
any changes to hardware is the following:

  * Put the wireless network outside your firewall
    (or place a firewall between your wireless network and your
     internal, security-sensitive network), and
  * Use a VPN with strong end-to-end cryptographic authentication
    and encryption (e.g., IPSEC or equivalent)

In short, don't trust the wireless devices to provide security
-- treat the wireless cards as a way of getting insecure access,
and then use an independent security mechanism.


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