[nsp-sec] Got traffic? - DDoS towards 80.239.232.152

Yiming Gong yiming.gong at xo.com
Thu May 20 18:28:03 EDT 2010


I see only 5 ips on our network in the past 4 hours, for tcp, mostly 48 
byte syn, all target to 3724, here is the detailed breakdown.

----------------------------------------------------------------------------------+
| count(*) | sip           | proto | dport | tcpflags | 
size                                                                                                                                                                 
|
+----------+---------------+-------+-------+----------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|       59 | 69.24.164.147 | TCP   | 3724  | ....S.   | 
48                                                                                                                                                                   
|
|       27 | 69.24.164.147 | UDP   | 0     | ......   | 
1464,2928,4392                                                                                                                                                       
|
|        6 | 69.24.164.147 | UDP   | 3724  | ......   | 
1464                                                                                                                                                                 
|
|      120 | 71.81.214.102 | TCP   | 3724  | ......   | 
47,48                                                                                                                                                                
|
|       59 | 71.81.214.102 | TCP   | 3724  | ....S.   | 
48,96                                                                                                                                                                
|
|      325 | 71.83.39.159  | UDP   | 0     | ......   | 
1500,1498,1499,1491,1490,1497,1495,1493,1487,1496,1476,1486,1479,1478,1474,1485,1494,1488,9000,3000,4500,7500,16500,12000,13500,6000,15000,10500,1464,4392,2928,1481 
|
|       74 | 71.83.39.159  | UDP   | 3724  | ......   | 
1500,1464                                                                                                                                                            
|
|       81 | 71.83.39.159  | UDP   | 3724  | .A....   | 
1500,4500,3000                                                                                                                                                       
|
|       15 | 97.73.237.18  | UDP   | 0     | ......   | 
1885,1464,427,4812,2928,421                                                                                                                                          
|
|        1 | 97.73.237.18  | UDP   | 3724  | ......   | 
1464                                                                                                                                                                 
|
                                                                                                                 |

Regards!

Yiming

> ----------- nsp-security Confidential --------
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>
> Could really use some help here.
>
> ICMP/UDP and TCP Syn flood against 80.239.232.152, most likely spoofed.
>
> Anyone got anything?
>
> Cheers,
> Nick
>
>
> - -- 
> Nicholas Ianelli: Neustar, Inc.
> Security Operations
>
> 46000 Center Oak Plaza Sterling, VA 20166
> +1 571.434.4691 - http://www.neustar.biz
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