[mini rant] New Cable Modem: EVW3226

Mojo-Jojo · January 28, 2015

Today we got our new cable modem to accompany our new internet package.

We used to have 120Mb/s down speeds, but considering it was quite pricey we went down to 50.

This meant that we were to replace our modem with the Ubee EVW3226, and boy do I already hate it.

The user interface (like any half-decent router should) allows you to edit the subnet.

Or, well. It LOOKS like it does. Whenever you enter anything but "255.255.255.0" as subnet mask, the page won't send the configuration. It warns about an invalid subnet mask.

Apparently this is because of a broken javascript implementation that checks for erroneous input.

Luckily (and sadly) this javascript is the only form of input protection and validation.

Using Fiddler I was able to modify a request I sent to change settings and manually change my subnet mask to what I wanted, and it works without a hitch.

That is, until I try to port forward something. I get the message saying that a forward must point to an IP in the same subnet. But it is. The router seems to be hardcoded for a /24 subnet.

But again, there was no side of server-side validations. Once again fiddling with Fiddler I was able to forge a request to manually override this setting, and again, it works.

So for some reason, they enabled changing subnet in the firmware, but the actual admin panel doesn't allow it.

That and the lack of consistency, broken client-side only input validation and the fact that my router crashed once when all I did was click "save" on a non-related setting (setting the DHCP pool size smaller) really leaves a lot to be desired about this router.

Luckily it has a bridge mode, so I can at least get myself a good router instead.

If it allows me to set bridge mode, that is. :rolleyes: