796882

ZyXEL VMG8825-Bx0B Manual

173
Zoom out
Zoom in
Previous page
1/434
Next page
Chapter 7 Wireless
VMG/XMG Series User’s Guide
173
These security standards do two things. First, they authenticate. This means that only people presenting
the right credentials (often a username and password, or a “key” phrase) can access the network.
Second, they encrypt. This means that the information sent over the air is encoded. Only people with
the code key can understand the information, and only people who have been authenticated are
given the code key.
These security standards vary in effectiveness. Some can be broken, such as the old Wired Equivalent
Protocol (WEP). Using WEP is better than using no security at all, but it will not keep a determined
attacker out. Other security standards are secure in themselves but can be broken if a user does not use
them properly. For example, the WPA-PSK security standard is very secure if you use a long key which is
difficult for an attacker’s software to guess - for example, a twenty-letter long string of apparently
random numbers and letters - but it is not very secure if you use a short key which is very easy to guess -
for example, a three-letter word from the dictionary.
Because of the damage that can be done by a malicious attacker, it’s not just people who have
sensitive information on their network who should use security. Everybody who uses any wireless network
should ensure that effective security is in place.
A good way to come up with effective security keys, passwords and so on is to use obscure information
that you personally will easily remember, and to enter it in a way that appears random and does not
include real words. For example, if your mother owns a 1970 Dodge Challenger and her favorite movie is
Vanishing Point (which you know was made in 1971) you could use “70dodchal71vanpoi” as your
security key.
The following sections introduce different types of wireless security you can set up in the wireless
network.
7.11.3.1 SSID
Normally, the Zyxel Device acts like a beacon and regularly broadcasts the SSID in the area. You can
hide the SSID instead, in which case the Zyxel Device does not broadcast the SSID. In addition, you
should change the default SSID to something that is difficult to guess.
This type of security is fairly weak, however, because there are ways for unauthorized wireless devices to
get the SSID. In addition, unauthorized wireless devices can still see the information that is sent in the
wireless network.
7.11.3.2 MAC Address Filter
Every device that can use a wireless network has a unique identification number, called a MAC
address.1 A MAC address is usually written using twelve hexadecimal characters2; for example,
00A0C5000002 or 00:A0:C5:00:00:02. To get the MAC address for each device in the wireless network,
see the device’s User’s Guide or other documentation.
You can use the MAC address filter to tell the Zyxel Device which devices are allowed or not allowed to
use the wireless network. If a device is allowed to use the wireless network, it still has to have the correct
information (SSID, channel, and security). If a device is not allowed to use the wireless network, it does
not matter if it has the correct information.
1. Some wireless devices, such as scanners, can detect wireless networks but cannot use wireless networks. These
kinds of wireless devices might not have MAC addresses.
2. Hexadecimal characters are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, and F.
… 173 …


Need help? Post your question in this forum.

Forumrules


Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

For example, Anti-Semitic content, racist content, or material that could result in a violent physical act.

For example, a credit card number, a personal identification number, or an unlisted home address. Note that email addresses and full names are not considered private information.

Forumrules

To achieve meaningful questions, we apply the following rules:

Register

Register getting emails for ZyXEL VMG8825-Bx0B at:


You will receive an email to register for one or both of the options.


Get your user manual by e-mail

Enter your email address to receive the manual of ZyXEL VMG8825-Bx0B in the language / languages: English as an attachment in your email.

The manual is 13.81 mb in size.

 

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.



Info