Ok, to finally kill this thing all together, what's the point of ever using "Shared" mode when "Open" is also encrypted and safer than the "Shared" mode since it doesn't require the unencrypted challenge?? What scenario would require "Shared" or "Both" instead of just "Open"?
Sevak
On Mon, 2003-10-13 at 16:38, sB Tech Support wrote:
Yes, in the open-open mode, the communication is more secured as the key is not revealed during the negotiation unlike the shared mode. Using the MAC authorisation further strengthens the security by having an extra control place.
Arasu
sB Tech Support
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Sevak Avakians
Sent: Tuesday, October 14, 2003 4:19 AM
To: [EMAIL PROTECTED]
Subject: RE: [smartBridges] Auth question
Sorry for being such a dope on this...
Now I think I've got it, but one more question:
When in OPEN - OPEN, the transmissions are still encrypted, but no challenge is made?
So, this is why Shared is a little less secure than Open...because someone listening to the unencrypted challenge and resultant encrypted response from CPE -theoretically- would be able to figure out the key. So, as long as MAC authorization is enabled and all of my real customers' MAC addresses are in the list, I can confidentally use the Open method without fearing that illegal users would be able to get on the network if they don't have the key.
On Fri, 2003-10-10 at 14:37, Seeni Mohamed wrote:
Hi Sevak,
I am sorry about that if I confused.
As you mentioned, if your APPOs are in "OPEN" with WEP keys enabled, then the CPE without these WEP keys will not be able to communicate each other.
Here is the table for the various authentication TYPE can be used with our sB devices. Please remember that Authentication will be valid only if WEP encryption enabled.
smartbridges
CPE
|
smartbridges
Access point
|
Encryption
|
Associate
|
PING
|
Open
|
Open
|
64/128
|
Y
|
Y
|
Shared
|
Shared
|
64/128
|
Y
|
Y
|
Shared
|
Open
|
64/128
|
N
|
N
|
Open
|
Shared
|
64/128
|
N
|
N
|
Open
|
Both
|
64/128
|
Y
|
Y
|
Shared
|
Both
|
64/128
|
Y
|
Y
|
Both
|
Both
|
64/128
|
Y
|
Y
|
Here is the difference between OPEN and SHARED keys.
OPEN
During the OPEN key authentication, the CPE sends only the request and AP response and process request based on the WEP encryption. With this authentication, they key will be hidden and not shared among the devices.
SHARED
During the shared key authentication, the access point sends an unencrypted challenge text string to any device attempting to communicate with the access point. The device requesting authentication encrypts the challenge text and sends it back to the access point. If the challenge text is encrypted correctly, the access point allows the requesting device to authenticate.
Kind regards,
Seeni
sB Tech support
[EMAIL PROTECTED]
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Sevak Avakians
Sent: Saturday, October 11, 2003 12:01 AM
To: [EMAIL PROTECTED]
Subject: RE: [smartBridges] Auth question
Ok, I'm very confused by this authentication thing now. I thought that OPEN meant that anyone without a matching WEP key can connect and SHARED meant only those with a matching WEP key can connect. But you are saying that OPEN means that they still need a matching WEP key? Is this a typo? Does this mean if my APPOs are in "OPEN" with WEP keys enabled, then customers without these WEP keys will not be able to connect? If this is the case, then what's the difference between OPEN and SHARED. Is it that the OPEN does not bother encrypting after the first check to see if the CPE has the right keys and SHARED always encrypts using those keys?
Please help a lost soul!!!
Thanks,
Sevak
On Thu, 2003-10-09 at 15:16, Seeni Mohamed wrote:
The AUTHENTICATION TYPE option provided in the Advanced TAB for the purpose of WEP key encryption, not for the wireless clients MAC authentication
OPEN SYSTEM allows any device to authenticate and then attempt to communicate with the access point (null authentication)
Using OPEN SYSTEM, any wireless device can authenticate with the access point, but the device can only communicate if its WEP keys match the access points.
Devices not using WEP do not attempt to authenticate with an access point that is using WEP.
Best regards,
Seeni
sB Tech support
[EMAIL PROTECTED]
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Rick Kunze
Sent: Friday, October 10, 2003 1:48 AM
To: [EMAIL PROTECTED]
Subject: [smartBridges] Auth question
'scuse me if this has been covered, I just joined.
Regarding an APPO, in the Advanced tab under Authentication Type:
If one selects OPEN SYSTEM, does that permit clients to associate even if
their mac address isn't in the Client Auth table, or is it that they must
still be mac authorized yet are allowed if they don't have the WEP key?
Thanks.
Rk
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