[Snort-users] How do I stop all alerts generated by 'ssp_stream4'? (snort 1.9.0 )
Kreimendahl, Chad J
Chad.Kreimendahl at ...4716...
Mon Oct 21 07:53:02 EDT 2002
These two options to stream4 should solve both of those:
disable_evasion_alerts, ttl_limit 0
From: Bryce Stenberg [mailto:bryce at ...5010...]
Sent: Sunday, October 20, 2002 4:23 PM
To: 'snort-users at lists.sourceforge.net'
Subject: [Snort-users] How do I stop all alerts generated by
'ssp_stream4'? (snort 1.9.0 )
I have a problem with my logs filling with unwanted alerts from
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
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
[**] [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
I run no rules files except one - local.rules which is only looking for
specific outgoing text.
Harness Racing New Zealand computer department,
emailto:bryce at ...5010...
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