Bedienungsanleitung Compaq Ipaq 3630 wireless security (Seite 7 von 30) (Englisch)

35484

Zoom out

Zoom in

Vorherige Seite

1/30

Nächste Seite

Wireless Security White Paper 7

Available Device-specific Security Measures

Many security measures are available for mobile access devices. Some of these are outlined in the

subsections below. For various reasons they are often not fully implemented.

Passwords

Mobile devices, especially handhelds, have small user interfaces and keypads, leading many users

to choose simpler passwords. For example, keypads that associate multiple letters with each key

require repeated presses to type certain letters. Users often choose passwords that use the first

letter typed by a given key. This practice substantially reduces the number of possible passwords.

Also, mobile device users often cache their passwords on the devices in order to automate

connections to servers.

A further consideration is whether or not to permit single sign-on from the mobile device. While

doing so is more convenient given the cumbersome nature of password entry on mobile devices,

it raises the level of risk that intruders may penetrate the network.

The straightforward solution is to endure the trade-off in convenience and make password

protection more robust by avoiding weak passwords, refraining from password caching, and

avoiding single sign-on.

Smart Cards

Smart cards offer a partial solution to the problem of securing data transmissions to and from

mobile devices. The smart card is a tamper-resistant piece of hardware on which passwords,

private keys, digital certificates, and cryptographic algorithms can be stored. Simply keeping the

smart card separate from the device, in a wallet for example, adds a level of security to the device

in the event of theft. Moreover, a person attacking a smart card must not only possess the card but

also have sophisticated tools and expertise.

There are two main types of smart cards: contact and contactless. The contact smart card consists

of a plastic card with gold-plated contacts embedded in the plastic. These contacts are connected

to an integrated circuit sandwiched between layers of plastic inside the card. The contactless

smart card typically connects to the smart card reader through an internal antenna.

Smart cards are easy to use, and the newer, more complex ones offer relatively strong encryption.

A smart card is most effective when paired with a personal identification number (PIN). Whereas

a stolen smart card can be used just like a stolen password, the association with a PIN presents

thieves with a further barrier to obtaining access to a wireless network, even with the card.

Smart card readers offer different levels of security. The basic smart card reader reads the smart

card in conjunction with a PIN. The enhanced smart card reader also reads the card in conjunction

with a PIN, but in addition does not allow the PIN back out to the serial port, thus preventing PIN

information from being intercepted via the serial port. The enhanced reader typically can perform

its own protocol and cryptological processing, unlike smart cards that do not perform such

processing themselves.

Missbrauch melden von Frage und/oder Antwort

Libble nimmt den Missbrauch seiner Dienste sehr ernst. Wir setzen uns dafür ein, derartige Missbrauchsfälle gemäß den Gesetzen Ihres Heimatlandes zu behandeln. Wenn Sie eine Meldung übermitteln, überprüfen wir Ihre Informationen und ergreifen entsprechende Maßnahmen. Wir melden uns nur dann wieder bei Ihnen, wenn wir weitere Einzelheiten wissen müssen oder weitere Informationen für Sie haben.

Compaq Ipaq 3630 wireless security Seite 7

Brauchen Sie Hilfe? Stellen Sie Ihre Frage.

Missbrauch melden von Frage und/oder Antwort

Art des Missbrauchs:

Forenregeln

Neu registrieren

Das Handbuch wird per E-Mail gesendet. Überprüfen Sie ihre E-Mail.

Ihre Frage wurde zu diesem Forum hinzugefügt

Info