I've been DDoS'd a lot by powerless kids who have access to some botnet or something. Typically, they'll get your IP address from some Skype resolver if they have your Skype name, or you're streaming video to Twitch.tv or something. Typically when this happens to me, the bandwidth meter in my router shows max usage and pinging google times out and I get disconnected from everything. And typically, you can usually dodge it by changing the MAC address in your router's firmware and then reboot the cable modem and you have a new IP address and as long as they don't get your new IP, you're good. But not this time.
Despite being on no services where this person can get my IP (he originally got it from skype where I had intended to talk to him), and despite changing my IP multiple times, an attack is still coming in. I can't access any website and my pings time out, but I'm not seeing any bandwidth being used this time. It's as if they're attacking my cable modem's MAC address directly and not my router's which is seemingly usually the case. I'm no expert, but I've managed to successfully dodge all other DDoS attacks except this one. If I set my router up as a Wireless client instead of an Access Point in order to use my T-Mobile 4g cellphone internet, I've got no problem (that's how I'm posting this right now), but 4g is really slow and laggy compared to a direct cable connection of course.
So I'm looking for some help here. Obviously if I call Comcast, what are they going to be able to do? Change my IP address? I've already done that and it seems useless. I have searched online and can't find any other post talking specifically about this kind of attack. If I could somehow change the MAC address of the actual cable modem and then call Comcast up and re-register the modem, I bet that would work. But I don't know how to do that. How can I avoid this in the future and what the hell kind of attack is this exact so I can do more research on it? Obviously, I should really be using a proxy at the OS-level, but it's too late for that. Short of buying a new cable modem, what else can I do? It's a Motorola SB6120 by the way and the router is a Cisco E2000 with Shibby's Tomato firmware.
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