Re: [MEXT] Energy consumption attacks

Hi Qiu,

On Tue, Mar 22, 2011 at 5:05 AM, QIU Ying <[email protected]> wrote:

> This topic is interesting.
>
>
>
> But I am afraid that there is an efficient way to prevent this kind of DOS
> attacks because the mobile node must wake up from sleep to receive and
> process these required messages before simply drop them.
>
>
>
> Could you please provide more details?
>
>
>

I am not entering in the solution space, various solutions may be possible.
You cannot simply drop the incoming packets as you suggested because you
would become unreachable in this case. The attacker can spoof source IP
addresses so you cannot differentiate between malicious and legitimate
packets.

Regards,

Pars



> Regards
>
> Qiu Ying
>
>
>
>
>
> *From:* [email protected] [mailto:[email protected]] *On Behalf Of
> *Pars Mutaf
> *Sent:* Monday, March 21, 2011 7:07 PM
> *To:* [email protected]
> *Subject:* Re: [MEXT] Energy consumption attacks
>
>
>
> Some details that may not be obvious:
>
> The victim consumes energy for:
>
> - Receiving the messages (continuously waking up from sleep mode)
> - Processing them and preparing reply packets (L2 and L3)
> - Sending replies (L2 ACKs and upper layer replies e.g. SIP or TCP replies)
>
> Sending replies especially consumes more energy. It was shown that in
> 802.11 sending 1 bit over the air consumes as much as executing 1,000 CPU
> instructions.
>
> Regards,
>
> Pars
>
> On Mon, Mar 21, 2011 at 11:43 AM, Pars Mutaf <[email protected]> wrote:
>
> Hello,
>
> I was wondering if solutions to energy consumption attacks on battery
> powered mobile hosts would be of interest to IETF Mobile IPv6 community.
>
> The attack consists of sending frequent request packets e.g. SIP INVITE or
> TCP SYN to a victim's home address.
>
> For example, experiments showed that the battery of a mobile phone with
> 802.11 access can be remotely consumed in 3 hours (full battery). Attacks on
> phones using an outdoor technology would result in more energy consumption
> because of the longer distance to the base station.
>
> The victim becomes unusable.
>
> Regards,
>
> Pars
>
>
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