lots of port 0 scannings

["SB CH" <chulmin2 () hotmail com>]

Hello, all.

I found lots of port 0 traffic from various conuntry these days like this.


[**] [1:524:5] BAD TRAFFIC tcp port 0 traffic [**]
[Classification: Misc activity] [Priority: 3] 
04/27-05:55:01.306781 65.57.56.46:0 -> 211.1.x.x:6588
TCP TTL:112 TOS:0x0 ID:464 IpLen:20 DgmLen:40 DF
******S* Seq: 0x95AF4  Ack: 0x0  Win: 0x200  TcpLen: 20

is there any special way or tool to use port 0 in order to scan?


and what's the meaning about this scan?

[**] [116:55:1] (snort_decoder): Truncated Tcp Options [**]
04/26-23:51:08.004547 211.230.86.34:0 -> 211.1.x.x:0
TCP TTL:120 TOS:0x0 ID:38672 IpLen:20 DgmLen:48 DF
******S* Seq: 0xD563D9DB  Ack: 0x0  Win: 0x4000  TcpLen: 28

the source port and dest port is 0 alike.



Thanks in advance.



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