Re: [OT] To people with VoIP SIP Clients (twinkle, etc), friendly-scanner DOS attack

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On 10/15/2010 12:56 AM, Rick Sewill wrote:
[snip]
>> Would you mind sharing which networks your attacks came from?
>>
>
> I hesitate to answer, but will.
>
> The people who own 67.222.1.124 and 184.106.213.202
> were very cooperative and interested.
>
> The Chinese IP address was 218.14.146.200.
> I could connect to 218.14.146.200 port 80 and saw,
> what I thought, was a Chinese job website...I don't know Chinese.
> I apologize if the website is not Chinese.
>
> The attack packets had a user agent name of friendly-scanner.
>
> I assumed it was a version of something found at
> http://blog.sipvicious.org/
>
> I assume it was looking for an asterisk server.
>
> Unfortunately, my twinkle client decided to reply.
> I tried looking for a twinkle configuration option to tell twinkle to
> just ignore REGISTER requests, to no avail.

It seems to be sipvicious although headers can be forged. The site looks 
Chinese to my untrained eyes too. I searched on the Twinkle website but 
couldn't find a way to ignore register requests. I don't know if other 
clients also respond to register requests so can't recommend any 
alternatives.

Regards,
Patrick
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