DGN2000: can't add a mac address in address reservation list

[leuzz]

Hello,

As in subject, when I try to add to the address resevation list this specific MAC address: 08:00:20:xx:xx:xx
I get the error message: "Invalid MAC Address, please enter again!"

The issue is in the Javascript "isValidMAC" function in utility.js, when the first two digit are checked for '00'. (rows 131, 133).

Why the two firsts hex digits of a MAC address are supposed to be '00'?
According to http://standards.ieee.org/regauth/oui/oui.txt there are a lot of MAC addresses excluded.

[nobel_nomar]

This is a very interesting occurance. Please post more details. Where you found this in the code, how you found it, examples of valid and invalid addresses, etc.

This may help fix a big bug, if true

[leuzz]

Originally Posted by nobel_nomar

This is a very interesting occurance. Please post more details. Where you found this in the code, how you found it, examples of valid and invalid addresses, etc.

This may help fix a big bug, if true

Javascript code is avaible without authentication by the link http://your-router-IP-Address/utility.js

As I wrote, issue is in the isValidMAC function:

function isValidMAC(inputStr,validChars,len) // returns true or false, no msg
{
var illegal = 0;
var illegal_char = 0;
if (len <= 0) // no set length
;
else if (inputStr.length != len)
return false;
//alert("inputStr="+inputStr);
for(i=0; i < inputStr.length; i++)
{
var c = inputStr.charAt(i);
if (i == 0 && c != '0')
return false;
if (i == 1 && c != '0')
return false;
if(i == 0 && ( c == '0' || c == 'f' || c == 'F')){
illegal_char = c;
}
if((illegal_char == c)
|| (illegal_char == 'f' && c=='F')
|| (illegal_char == 'F' && c=='f'))
illegal++;
else
illegal = 0;

if (validChars.indexOf(c) == -1 )
return false;
}
if(illegal == len)
return false;
return true;
}

You can see the rows marked in bold, they checks for '00' in the firsts two digits.

For bypass this, I did a manual edit on a backup configuration file (plaintext, thanks Netgear) and then I restored the file modified.

[nobel_nomar]

Does it work with your modification?

Post the MAC addresses that worked and didn't work (if you don't mind)

[leuzz]

Originally Posted by nobel_nomar

Does it work with your modification?

Post the MAC addresses that worked and didn't work (if you don't mind)

Yes, it works.

MAC Address is: 08:00:20:BB:08:9B
It can be added to the list by a manual editing of the configuration file.
This means:
- Backup current configuration.
- Edit the configuration file with a text editor.
- Restore the modified configuration file.

Editing configuration is very simple, all options are well commented.

[nobel_nomar]

Thanks for the info on this one, I'm sure this can be fixed in a firmware update

[leuzz]

Is there a place where I can find a bug list?

[nobel_nomar]

This is where it would be:
http://kbserver.netgear.com/release_notes/d103335.asp

But they obviously don't think there are any bugs in the initial release lol. I want to check this with other models. Do you think this is a standard function? Or one just for this model?

[leuzz]

This is my own first Netgear router.
I think it has a lot of problem, this one is only the most obvious after 4 days of normal use.
Anyway, of course! It can be a standard function.
Other models can have different path or file name to javascript code.
Generally you can find it in html sources of their web interface.

[nobel_nomar]

Hey, I got someone in the UK to test this and they didn't have any issues, check out the screenshot:

http://www.flickr.com/photos/32496042@N03/3037583809/

Also, what web browsers have you tried?