[Snort-users] How do I stop all alerts generated by 'ssp_stream4'? (snort 1.9.0 )

Bryce Stenberg bryce at ...5010...
Sun Oct 20 14:27:02 EDT 2002


Hi All,

I have a problem with my logs filling with unwanted alerts from
'spp_stream4'.
I'm using Snort 1.9.0 on Windows NT4 sp6 servers.
I do want packets reassembled but I don't want any alerts.
My 'snort.conf' settings relating to stream4 are:
	
	# stream4: stateful inspection/stream reassembly for Snort:
	preprocessor stream4: noinspect
	
	# tcp stream reassembly directive:
	preprocessor stream4_reassemble: both, ports all, noalerts


My logs are filling with the likes of:

[**] [111:18:1] (spp_stream4) Multiple Acked Packets (possible fragroute)
[**]
10/21-10:08:41.883332 192.168.0.7:1257 -> 192.168.0.240:6400
TCP TTL:128 TOS:0x0 ID:17792 IpLen:20 DgmLen:73 DF
***AP*** Seq: 0x9D744AC5  Ack: 0x610FCA  Win: 0x2054  TcpLen: 20

OR:

[**] [111:16:1] (spp_stream4) TCP CHECKSUM CHANGED ON RETRANSMISSION
(possible fragroute) detection [**]
10/21-10:01:11.151709 192.168.0.6:139 -> 192.168.0.23:2898
TCP TTL:128 TOS:0x0 ID:45791 IpLen:20 DgmLen:1500 DF
***A**** Seq: 0xC4F73351  Ack: 0x1FAC281A  Win: 0x2238  TcpLen: 20


Does anyone know what I'm doing wrong here or what I'm missing please?
(I am assuming the above log entries do tie in to the stream4 settings in
snort.conf).
I run no rules files except one - local.rules which is only looking for
specific outgoing text.


Thanks,
  Bryce Stenberg.
     Harness Racing New Zealand computer department,
     emailto:bryce at ...5010...
 


CAUTION: This email message and accompanying data may contain information
that is confidential and subject to legal privilege. If you are not the
intended recipient you are notified that any use, dissemination,
distribution or copying of this message or data is prohibited. If you have
received this email message in error please notify us immediately and erase
all copies of the message and attachments.
 ALSO, unless expressly stated otherwise, the contents of this message
represent only the views of the sender as expressed only to the intended
recipient, do not commit Harness Racing New Zealand (HRNZ) to any course of
action and are not intended to impose any legal obligation upon HRNZ.






More information about the Snort-users mailing list