Suricata on pfSense 3 starts and kills the WAN

[teknologist]

Hi Bill,

Thanks again for your help.

Of course I did google and cam across all the posts/subjects you mention but none fit my problem…

The arp message only happens just after suricata starts.

I have been running this pfsense box for years with no issues using snort.

no arp messages, nothing.

I will continue to investigate. AS far as I can tell the surricata.log does not show anything wrong.

I will post it here as soon as possible.

Cheers,

Eric

PS: no cable modem or  ADSL router here. I use FTTH.

[teknologist]

Just after hitting start on suricata:

Kernel Log:

832.776863 [1233] netmap_mem_global_config  reconfiguring
em3: link state changed to DOWN
em3_vlan100: link state changed to DOWN
em3: link state changed to UP
em3_vlan100: link state changed to UP

And suricata.log:

22/4/2016 -- 12:10:32 - <notice>-- This is Suricata version 3.0 RELEASE
22/4/2016 -- 12:10:32 - <info>-- CPUs/cores online: 4
22/4/2016 -- 12:10:32 - <info>-- Adding interface em3 from config file
22/4/2016 -- 12:10:32 - <info>-- Adding interface em3+ from config file
22/4/2016 -- 12:10:32 - <info>-- Netmap: Setting IPS mode
22/4/2016 -- 12:10:32 - <info>-- 'default' server has 'request-body-minimal-inspect-size' set to 33882 and 'request-body-inspect-window' set to 4053 after randomization.
22/4/2016 -- 12:10:32 - <info>-- 'default' server has 'response-body-minimal-inspect-size' set to 33695 and 'response-body-inspect-window' set to 4218 after randomization.
22/4/2016 -- 12:10:32 - <info>-- HTTP memcap: 67108864
22/4/2016 -- 12:10:32 - <info>-- DNS request flood protection level: 500
22/4/2016 -- 12:10:32 - <info>-- DNS per flow memcap (state-memcap): 524288
22/4/2016 -- 12:10:32 - <info>-- DNS global memcap: 16777216
22/4/2016 -- 12:10:32 - <info>-- allocated 1572864 bytes of memory for the defrag hash... 65536 buckets of size 24
22/4/2016 -- 12:10:32 - <info>-- preallocated 65535 defrag trackers of size 136
22/4/2016 -- 12:10:32 - <info>-- defrag memory usage: 10485624 bytes, maximum: 33554432
22/4/2016 -- 12:10:32 - <info>-- AutoFP mode using "Active Packets" flow load balancer
22/4/2016 -- 12:10:32 - <info>-- allocated 262144 bytes of memory for the host hash... 4096 buckets of size 64
22/4/2016 -- 12:10:32 - <info>-- preallocated 1000 hosts of size 104
22/4/2016 -- 12:10:32 - <info>-- host memory usage: 366144 bytes, maximum: 16777216
22/4/2016 -- 12:10:32 - <info>-- allocated 4194304 bytes of memory for the flow hash... 65536 buckets of size 64
22/4/2016 -- 12:10:32 - <info>-- preallocated 10000 flows of size 256
22/4/2016 -- 12:10:32 - <info>-- flow memory usage: 6754304 bytes, maximum: 33554432
22/4/2016 -- 12:10:32 - <info>-- stream "prealloc-sessions": 32768 (per thread)
22/4/2016 -- 12:10:32 - <info>-- stream "memcap": 67108864
22/4/2016 -- 12:10:32 - <info>-- stream "midstream" session pickups: disabled
22/4/2016 -- 12:10:32 - <info>-- stream "async-oneside": disabled
22/4/2016 -- 12:10:32 - <info>-- stream "checksum-validation": disabled
22/4/2016 -- 12:10:32 - <info>-- stream."inline": enabled
22/4/2016 -- 12:10:32 - <info>-- stream "max-synack-queued": 5
22/4/2016 -- 12:10:32 - <info>-- stream.reassembly "memcap": 67108864
22/4/2016 -- 12:10:32 - <info>-- stream.reassembly "depth": 0
22/4/2016 -- 12:10:32 - <info>-- stream.reassembly "toserver-chunk-size": 2654
22/4/2016 -- 12:10:32 - <info>-- stream.reassembly "toclient-chunk-size": 2436
22/4/2016 -- 12:10:32 - <info>-- stream.reassembly.raw: enabled
22/4/2016 -- 12:10:32 - <info>-- segment pool: pktsize 4, prealloc 256
22/4/2016 -- 12:10:32 - <info>-- segment pool: pktsize 16, prealloc 512
22/4/2016 -- 12:10:32 - <info>-- segment pool: pktsize 112, prealloc 512
22/4/2016 -- 12:10:32 - <info>-- segment pool: pktsize 248, prealloc 512
22/4/2016 -- 12:10:32 - <info>-- segment pool: pktsize 512, prealloc 512
22/4/2016 -- 12:10:32 - <info>-- segment pool: pktsize 768, prealloc 1024
22/4/2016 -- 12:10:32 - <info>-- segment pool: pktsize 1448, prealloc 1024
22/4/2016 -- 12:10:32 - <info>-- segment pool: pktsize 65535, prealloc 128
22/4/2016 -- 12:10:32 - <info>-- stream.reassembly "chunk-prealloc": 250
22/4/2016 -- 12:10:32 - <info>-- stream.reassembly "zero-copy-size": 128
22/4/2016 -- 12:10:32 - <info>-- allocated 262144 bytes of memory for the ippair hash... 4096 buckets of size 64
22/4/2016 -- 12:10:32 - <info>-- preallocated 1000 ippairs of size 104
22/4/2016 -- 12:10:32 - <info>-- ippair memory usage: 366144 bytes, maximum: 16777216
22/4/2016 -- 12:10:32 - <info>-- using magic-file /usr/share/misc/magic
22/4/2016 -- 12:10:32 - <info>-- Delayed detect disabled
22/4/2016 -- 12:10:32 - <info>-- IP reputation disabled
22/4/2016 -- 12:10:32 - <info>-- Loading rule file: /usr/local/etc/suricata/suricata_42461_em3/rules/suricata.rules
22/4/2016 -- 12:10:32 - <info>-- 1 rule files processed. 171 rules successfully loaded, 0 rules failed
22/4/2016 -- 12:10:32 - <info>-- 171 signatures processed. 0 are IP-only rules, 0 are inspecting packet payload, 43 inspect application layer, 76 are decoder event only
22/4/2016 -- 12:10:32 - <info>-- building signature grouping structure, stage 1: preprocessing rules... complete
22/4/2016 -- 12:10:32 - <info>-- building signature grouping structure, stage 2: building source address list... complete
22/4/2016 -- 12:10:32 - <info>-- building signature grouping structure, stage 3: building destination address lists... complete
22/4/2016 -- 12:10:32 - <info>-- Threshold config parsed: 0 rule(s) found
22/4/2016 -- 12:10:32 - <info>-- Core dump size is unlimited.
22/4/2016 -- 12:10:32 - <info>-- fast output device (regular) initialized: alerts.log
22/4/2016 -- 12:10:32 - <info>-- Unified2-alert initialized: filename unified2.alert, limit 32 MB
22/4/2016 -- 12:10:32 - <info>-- http-log output device (regular) initialized: http.log
22/4/2016 -- 12:10:32 - <info>-- Syslog output initialized
22/4/2016 -- 12:10:32 - <info>-- Using 2 live device(s).
22/4/2016 -- 12:10:32 - <info>-- Using 1 threads for interface em3
22/4/2016 -- 12:10:32 - <info>-- Netmap IPS mode activated em3->em3+
22/4/2016 -- 12:10:32 - <info>-- preallocated 1024 packets. Total memory 3557376
22/4/2016 -- 12:10:33 - <info>-- Using 1 threads for interface em3+
22/4/2016 -- 12:10:33 - <info>-- Netmap IPS mode activated em3+->em3
22/4/2016 -- 12:10:33 - <info>-- preallocated 1024 packets. Total memory 3557376
22/4/2016 -- 12:10:33 - <info>-- RunModeIdsNetmapAutoFp initialised
22/4/2016 -- 12:10:33 - <info>-- using 1 flow manager threads
22/4/2016 -- 12:10:33 - <info>-- preallocated 1024 packets. Total memory 3557376
22/4/2016 -- 12:10:33 - <info>-- using 1 flow recycler threads
22/4/2016 -- 12:10:33 - <notice>-- all 8 packet processing threads, 2 management threads initialized, engine started.

WAN is down SO I stop suricata here...

22/4/2016 -- 12:12:17 - <notice>-- Signal Received.  Stopping engine.
22/4/2016 -- 12:12:17 - <info>-- 0 new flows, 0 established flows were timed out, 0 flows in closed state
22/4/2016 -- 12:12:17 - <info>-- preallocated 1024 packets. Total memory 3557376
22/4/2016 -- 12:12:17 - <info>-- time elapsed 105.125s
22/4/2016 -- 12:12:17 - <info>-- 29 flows processed
22/4/2016 -- 12:12:17 - <info>-- (RxNetmapem31) Kernel: Packets 626, dropped 0, bytes 72768
22/4/2016 -- 12:12:17 - <info>-- AutoFP - Total flow handler queues - 6
22/4/2016 -- 12:12:17 - <info>-- AutoFP - Queue 0  - pkts: 105          flows: 0           
22/4/2016 -- 12:12:17 - <info>-- AutoFP - Queue 1  - pkts: 105          flows: 0           
22/4/2016 -- 12:12:17 - <info>-- AutoFP - Queue 2  - pkts: 104          flows: 0           
22/4/2016 -- 12:12:17 - <info>-- AutoFP - Queue 3  - pkts: 104          flows: 0           
22/4/2016 -- 12:12:17 - <info>-- AutoFP - Queue 4  - pkts: 104          flows: 0           
22/4/2016 -- 12:12:17 - <info>-- AutoFP - Queue 5  - pkts: 104          flows: 0           
22/4/2016 -- 12:12:17 - <info>-- (RxNetmapem3+1) Kernel: Packets 72, dropped 0, bytes 12011
22/4/2016 -- 12:12:17 - <info>-- AutoFP - Total flow handler queues - 6
22/4/2016 -- 12:12:17 - <info>-- AutoFP - Queue 0  - pkts: 54           flows: 26          
22/4/2016 -- 12:12:17 - <info>-- AutoFP - Queue 1  - pkts: 11           flows: 3           
22/4/2016 -- 12:12:17 - <info>-- AutoFP - Queue 2  - pkts: 2            flows: 0           
22/4/2016 -- 12:12:17 - <info>-- AutoFP - Queue 3  - pkts: 2            flows: 0           
22/4/2016 -- 12:12:17 - <info>-- AutoFP - Queue 4  - pkts: 2            flows: 0           
22/4/2016 -- 12:12:17 - <info>-- AutoFP - Queue 5  - pkts: 1            flows: 0           
22/4/2016 -- 12:12:17 - <info>-- Stream TCP processed 28 TCP packets
22/4/2016 -- 12:12:17 - <info>-- Fast log output wrote 0 alerts
22/4/2016 -- 12:12:17 - <info>-- (Detect1) Alerts 0
22/4/2016 -- 12:12:17 - <info>-- Alert unified2 module wrote 0 alerts
22/4/2016 -- 12:12:17 - <info>-- HTTP logger logged 0 requests
22/4/2016 -- 12:12:17 - <info>-- Stream TCP processed 1 TCP packets
22/4/2016 -- 12:12:17 - <info>-- Fast log output wrote 0 alerts
22/4/2016 -- 12:12:17 - <info>-- (Detect2) Alerts 0
22/4/2016 -- 12:12:17 - <info>-- HTTP logger logged 0 requests
22/4/2016 -- 12:12:17 - <info>-- Stream TCP processed 0 TCP packets
22/4/2016 -- 12:12:17 - <info>-- Fast log output wrote 0 alerts
22/4/2016 -- 12:12:17 - <info>-- (Detect3) Alerts 0
22/4/2016 -- 12:12:17 - <info>-- HTTP logger logged 0 requests
22/4/2016 -- 12:12:17 - <info>-- Stream TCP processed 0 TCP packets
22/4/2016 -- 12:12:17 - <info>-- Fast log output wrote 0 alerts
22/4/2016 -- 12:12:17 - <info>-- (Detect4) Alerts 0
22/4/2016 -- 12:12:17 - <info>-- HTTP logger logged 0 requests
22/4/2016 -- 12:12:17 - <info>-- Stream TCP processed 0 TCP packets
22/4/2016 -- 12:12:17 - <info>-- Fast log output wrote 0 alerts
22/4/2016 -- 12:12:17 - <info>-- (Detect5) Alerts 0
22/4/2016 -- 12:12:17 - <info>-- HTTP logger logged 0 requests
22/4/2016 -- 12:12:17 - <info>-- Stream TCP processed 0 TCP packets
22/4/2016 -- 12:12:17 - <info>-- Fast log output wrote 0 alerts
22/4/2016 -- 12:12:17 - <info>-- (Detect6) Alerts 0
22/4/2016 -- 12:12:17 - <info>-- HTTP logger logged 0 requests
22/4/2016 -- 12:12:17 - <info>-- ippair memory usage: 366144 bytes, maximum: 16777216
22/4/2016 -- 12:12:18 - <info>-- host memory usage: 366144 bytes, maximum: 16777216
22/4/2016 -- 12:12:18 - <info>-- cleaning up signature grouping structure... complete
22/4/2016 -- 12:12:18 - <notice>-- Stats for 'em3':  pkts: 626, drop: 0 (0.00%), invalid chksum: 0
22/4/2016 -- 12:12:18 - <notice>-- Stats for 'em3+':  pkts: 72, drop: 0 (0.00%), invalid chksum: 0</notice></notice></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></notice></notice></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></notice> 

I cannot see anything weird here…can you ? And this time the arp message did not even show up...

Cheers,

Eric

[bmeeks]

@teknologist:

Just after hitting start on suricata:

Kernel Log:

832.776863 [1233] netmap_mem_global_config  reconfiguring
em3: link state changed to DOWN
em3_vlan100: link state changed to DOWN
em3: link state changed to UP
em3_vlan100: link state changed to UP

And suricata.log:

22/4/2016 -- 12:10:32 - <notice>-- This is Suricata version 3.0 RELEASE
22/4/2016 -- 12:10:32 - <info>-- CPUs/cores online: 4
22/4/2016 -- 12:10:32 - <info>-- Adding interface em3 from config file
22/4/2016 -- 12:10:32 - <info>-- Adding interface em3+ from config file
22/4/2016 -- 12:10:32 - <info>-- Netmap: Setting IPS mode
22/4/2016 -- 12:10:32 - <info>-- 'default' server has 'request-body-minimal-inspect-size' set to 33882 and 'request-body-inspect-window' set to 4053 after randomization.
22/4/2016 -- 12:10:32 - <info>-- 'default' server has 'response-body-minimal-inspect-size' set to 33695 and 'response-body-inspect-window' set to 4218 after randomization.
22/4/2016 -- 12:10:32 - <info>-- HTTP memcap: 67108864
22/4/2016 -- 12:10:32 - <info>-- DNS request flood protection level: 500
22/4/2016 -- 12:10:32 - <info>-- DNS per flow memcap (state-memcap): 524288
22/4/2016 -- 12:10:32 - <info>-- DNS global memcap: 16777216
22/4/2016 -- 12:10:32 - <info>-- allocated 1572864 bytes of memory for the defrag hash... 65536 buckets of size 24
22/4/2016 -- 12:10:32 - <info>-- preallocated 65535 defrag trackers of size 136
22/4/2016 -- 12:10:32 - <info>-- defrag memory usage: 10485624 bytes, maximum: 33554432
22/4/2016 -- 12:10:32 - <info>-- AutoFP mode using "Active Packets" flow load balancer
22/4/2016 -- 12:10:32 - <info>-- allocated 262144 bytes of memory for the host hash... 4096 buckets of size 64
22/4/2016 -- 12:10:32 - <info>-- preallocated 1000 hosts of size 104
22/4/2016 -- 12:10:32 - <info>-- host memory usage: 366144 bytes, maximum: 16777216
22/4/2016 -- 12:10:32 - <info>-- allocated 4194304 bytes of memory for the flow hash... 65536 buckets of size 64
22/4/2016 -- 12:10:32 - <info>-- preallocated 10000 flows of size 256
22/4/2016 -- 12:10:32 - <info>-- flow memory usage: 6754304 bytes, maximum: 33554432
22/4/2016 -- 12:10:32 - <info>-- stream "prealloc-sessions": 32768 (per thread)
22/4/2016 -- 12:10:32 - <info>-- stream "memcap": 67108864
22/4/2016 -- 12:10:32 - <info>-- stream "midstream" session pickups: disabled
22/4/2016 -- 12:10:32 - <info>-- stream "async-oneside": disabled
22/4/2016 -- 12:10:32 - <info>-- stream "checksum-validation": disabled
22/4/2016 -- 12:10:32 - <info>-- stream."inline": enabled
22/4/2016 -- 12:10:32 - <info>-- stream "max-synack-queued": 5
22/4/2016 -- 12:10:32 - <info>-- stream.reassembly "memcap": 67108864
22/4/2016 -- 12:10:32 - <info>-- stream.reassembly "depth": 0
22/4/2016 -- 12:10:32 - <info>-- stream.reassembly "toserver-chunk-size": 2654
22/4/2016 -- 12:10:32 - <info>-- stream.reassembly "toclient-chunk-size": 2436
22/4/2016 -- 12:10:32 - <info>-- stream.reassembly.raw: enabled
22/4/2016 -- 12:10:32 - <info>-- segment pool: pktsize 4, prealloc 256
22/4/2016 -- 12:10:32 - <info>-- segment pool: pktsize 16, prealloc 512
22/4/2016 -- 12:10:32 - <info>-- segment pool: pktsize 112, prealloc 512
22/4/2016 -- 12:10:32 - <info>-- segment pool: pktsize 248, prealloc 512
22/4/2016 -- 12:10:32 - <info>-- segment pool: pktsize 512, prealloc 512
22/4/2016 -- 12:10:32 - <info>-- segment pool: pktsize 768, prealloc 1024
22/4/2016 -- 12:10:32 - <info>-- segment pool: pktsize 1448, prealloc 1024
22/4/2016 -- 12:10:32 - <info>-- segment pool: pktsize 65535, prealloc 128
22/4/2016 -- 12:10:32 - <info>-- stream.reassembly "chunk-prealloc": 250
22/4/2016 -- 12:10:32 - <info>-- stream.reassembly "zero-copy-size": 128
22/4/2016 -- 12:10:32 - <info>-- allocated 262144 bytes of memory for the ippair hash... 4096 buckets of size 64
22/4/2016 -- 12:10:32 - <info>-- preallocated 1000 ippairs of size 104
22/4/2016 -- 12:10:32 - <info>-- ippair memory usage: 366144 bytes, maximum: 16777216
22/4/2016 -- 12:10:32 - <info>-- using magic-file /usr/share/misc/magic
22/4/2016 -- 12:10:32 - <info>-- Delayed detect disabled
22/4/2016 -- 12:10:32 - <info>-- IP reputation disabled
22/4/2016 -- 12:10:32 - <info>-- Loading rule file: /usr/local/etc/suricata/suricata_42461_em3/rules/suricata.rules
22/4/2016 -- 12:10:32 - <info>-- 1 rule files processed. 171 rules successfully loaded, 0 rules failed
22/4/2016 -- 12:10:32 - <info>-- 171 signatures processed. 0 are IP-only rules, 0 are inspecting packet payload, 43 inspect application layer, 76 are decoder event only
22/4/2016 -- 12:10:32 - <info>-- building signature grouping structure, stage 1: preprocessing rules... complete
22/4/2016 -- 12:10:32 - <info>-- building signature grouping structure, stage 2: building source address list... complete
22/4/2016 -- 12:10:32 - <info>-- building signature grouping structure, stage 3: building destination address lists... complete
22/4/2016 -- 12:10:32 - <info>-- Threshold config parsed: 0 rule(s) found
22/4/2016 -- 12:10:32 - <info>-- Core dump size is unlimited.
22/4/2016 -- 12:10:32 - <info>-- fast output device (regular) initialized: alerts.log
22/4/2016 -- 12:10:32 - <info>-- Unified2-alert initialized: filename unified2.alert, limit 32 MB
22/4/2016 -- 12:10:32 - <info>-- http-log output device (regular) initialized: http.log
22/4/2016 -- 12:10:32 - <info>-- Syslog output initialized
22/4/2016 -- 12:10:32 - <info>-- Using 2 live device(s).
22/4/2016 -- 12:10:32 - <info>-- Using 1 threads for interface em3
22/4/2016 -- 12:10:32 - <info>-- Netmap IPS mode activated em3->em3+
22/4/2016 -- 12:10:32 - <info>-- preallocated 1024 packets. Total memory 3557376
22/4/2016 -- 12:10:33 - <info>-- Using 1 threads for interface em3+
22/4/2016 -- 12:10:33 - <info>-- Netmap IPS mode activated em3+->em3
22/4/2016 -- 12:10:33 - <info>-- preallocated 1024 packets. Total memory 3557376
22/4/2016 -- 12:10:33 - <info>-- RunModeIdsNetmapAutoFp initialised
22/4/2016 -- 12:10:33 - <info>-- using 1 flow manager threads
22/4/2016 -- 12:10:33 - <info>-- preallocated 1024 packets. Total memory 3557376
22/4/2016 -- 12:10:33 - <info>-- using 1 flow recycler threads
22/4/2016 -- 12:10:33 - <notice>-- all 8 packet processing threads, 2 management threads initialized, engine started.

WAN is down SO I stop suricata here...

22/4/2016 -- 12:12:17 - <notice>-- Signal Received.  Stopping engine.
22/4/2016 -- 12:12:17 - <info>-- 0 new flows, 0 established flows were timed out, 0 flows in closed state
22/4/2016 -- 12:12:17 - <info>-- preallocated 1024 packets. Total memory 3557376
22/4/2016 -- 12:12:17 - <info>-- time elapsed 105.125s
22/4/2016 -- 12:12:17 - <info>-- 29 flows processed
22/4/2016 -- 12:12:17 - <info>-- (RxNetmapem31) Kernel: Packets 626, dropped 0, bytes 72768
22/4/2016 -- 12:12:17 - <info>-- AutoFP - Total flow handler queues - 6
22/4/2016 -- 12:12:17 - <info>-- AutoFP - Queue 0  - pkts: 105          flows: 0           
22/4/2016 -- 12:12:17 - <info>-- AutoFP - Queue 1  - pkts: 105          flows: 0           
22/4/2016 -- 12:12:17 - <info>-- AutoFP - Queue 2  - pkts: 104          flows: 0           
22/4/2016 -- 12:12:17 - <info>-- AutoFP - Queue 3  - pkts: 104          flows: 0           
22/4/2016 -- 12:12:17 - <info>-- AutoFP - Queue 4  - pkts: 104          flows: 0           
22/4/2016 -- 12:12:17 - <info>-- AutoFP - Queue 5  - pkts: 104          flows: 0           
22/4/2016 -- 12:12:17 - <info>-- (RxNetmapem3+1) Kernel: Packets 72, dropped 0, bytes 12011
22/4/2016 -- 12:12:17 - <info>-- AutoFP - Total flow handler queues - 6
22/4/2016 -- 12:12:17 - <info>-- AutoFP - Queue 0  - pkts: 54           flows: 26          
22/4/2016 -- 12:12:17 - <info>-- AutoFP - Queue 1  - pkts: 11           flows: 3           
22/4/2016 -- 12:12:17 - <info>-- AutoFP - Queue 2  - pkts: 2            flows: 0           
22/4/2016 -- 12:12:17 - <info>-- AutoFP - Queue 3  - pkts: 2            flows: 0           
22/4/2016 -- 12:12:17 - <info>-- AutoFP - Queue 4  - pkts: 2            flows: 0           
22/4/2016 -- 12:12:17 - <info>-- AutoFP - Queue 5  - pkts: 1            flows: 0           
22/4/2016 -- 12:12:17 - <info>-- Stream TCP processed 28 TCP packets
22/4/2016 -- 12:12:17 - <info>-- Fast log output wrote 0 alerts
22/4/2016 -- 12:12:17 - <info>-- (Detect1) Alerts 0
22/4/2016 -- 12:12:17 - <info>-- Alert unified2 module wrote 0 alerts
22/4/2016 -- 12:12:17 - <info>-- HTTP logger logged 0 requests
22/4/2016 -- 12:12:17 - <info>-- Stream TCP processed 1 TCP packets
22/4/2016 -- 12:12:17 - <info>-- Fast log output wrote 0 alerts
22/4/2016 -- 12:12:17 - <info>-- (Detect2) Alerts 0
22/4/2016 -- 12:12:17 - <info>-- HTTP logger logged 0 requests
22/4/2016 -- 12:12:17 - <info>-- Stream TCP processed 0 TCP packets
22/4/2016 -- 12:12:17 - <info>-- Fast log output wrote 0 alerts
22/4/2016 -- 12:12:17 - <info>-- (Detect3) Alerts 0
22/4/2016 -- 12:12:17 - <info>-- HTTP logger logged 0 requests
22/4/2016 -- 12:12:17 - <info>-- Stream TCP processed 0 TCP packets
22/4/2016 -- 12:12:17 - <info>-- Fast log output wrote 0 alerts
22/4/2016 -- 12:12:17 - <info>-- (Detect4) Alerts 0
22/4/2016 -- 12:12:17 - <info>-- HTTP logger logged 0 requests
22/4/2016 -- 12:12:17 - <info>-- Stream TCP processed 0 TCP packets
22/4/2016 -- 12:12:17 - <info>-- Fast log output wrote 0 alerts
22/4/2016 -- 12:12:17 - <info>-- (Detect5) Alerts 0
22/4/2016 -- 12:12:17 - <info>-- HTTP logger logged 0 requests
22/4/2016 -- 12:12:17 - <info>-- Stream TCP processed 0 TCP packets
22/4/2016 -- 12:12:17 - <info>-- Fast log output wrote 0 alerts
22/4/2016 -- 12:12:17 - <info>-- (Detect6) Alerts 0
22/4/2016 -- 12:12:17 - <info>-- HTTP logger logged 0 requests
22/4/2016 -- 12:12:17 - <info>-- ippair memory usage: 366144 bytes, maximum: 16777216
22/4/2016 -- 12:12:18 - <info>-- host memory usage: 366144 bytes, maximum: 16777216
22/4/2016 -- 12:12:18 - <info>-- cleaning up signature grouping structure... complete
22/4/2016 -- 12:12:18 - <notice>-- Stats for 'em3':  pkts: 626, drop: 0 (0.00%), invalid chksum: 0
22/4/2016 -- 12:12:18 - <notice>-- Stats for 'em3+':  pkts: 72, drop: 0 (0.00%), invalid chksum: 0</notice></notice></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></notice></notice></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></info></notice> 

I cannot see anything weird here…can you ? And this time the arp message did not even show up...

Cheers,

Eric

Nope, I do not see anything unusual in the log.  And you said the same thing happens in Legacy Mode as well?  Legacy Mode in Suricata is just like Snort.  Both use the libpcap library to grab copies of packets flowing through the interface.  With inline mode I could sort of speculate that the new Netmap interface could be  a potential problem spot, but the old legacy mode should not be interfering.

For the kernel log messages, what sort order do you have on the system log?  I'm trying to figure out which message happened first.  Was it the n_etmap_mem_global_ one or the em3_vlan100 link state one?

I assume since this box is misbehaving so badly that it is not in service, so would you be game for installing the Snort package on it to see if Snort still works OK?

This is a very baffling problem.

Bill

[teknologist]

Hi Bill,

I am currently running Snort. I have turned of suricata for the moment.

pfSense gets the WAN IP through a DHCP request to the FTTH "modem"

I don't understand what you mean by sort order ?

The kernel messages are shown with dmesg.

I see the netmap first and then WAN interfaces goes DOWN/UP (as well as the WAN-vlan100 of course)

In fact it always happens the same way:

Everything is up except suricata.

I start suricata, wait for a few seconds and see those messages in dmesg.
And I see my WAN connection killed…

At very first i thought it had something to do with a rule, but even with no rule and no BLOCKING it happens.

Then I disable suricata on WAN, enable snort on WAN and everything goes back to normal...

This is driving me crazy...I usually always find my answers through forums/google....this time not..; :-(

[bmeeks]

I thought you had copied some messages out of the system log from the GUI.  There is a setting for the GUI display of the system log to sort events either most recent at the top or oldest at the top.  That's the setting I was referring to.

I suspect Netmap might be the culprit here.  If you want to test some more, do this –

1. Install Suricata.  Go to the INTERFACE SETTINGS tab for the WAN in Suricata and change the blocking mode to Legacy Mode and save the change.  Now immediately go back and disable blocking for the WAN.  Save that change.  Now start/restart Suricata and see what happens.

Maybe you have already done this, but the sequence of steps above should result in the Netmap module not loading in Suricata.

Bill

[teknologist]

You are right, doing it this way it works.

An,ything I can do to make it work inline ?

[teknologist]

Tried re-enabling inline mode. No go.

I tend to have the feeling that suricata is just blocking WAN DHCP request…

I don't see any kernel errors anymore...

[bmeeks]

@teknologist:

Tried re-enabling inline mode. No go.

I tend to have the feeling that suricata is just blocking WAN DHCP request…

I don't see any kernel errors anymore...

I think there are some issues with Netmap (the new technology used for inline mode).  Some other users are having issues with certain NICs even with Suricata not installed.  One user also uncovered some bug reports to the Netmap developer on Github, so I'm thinking Netmap itself is the issue.  When it malfunctions, because of where it lies in the packet chain, it can kill connectivity dead.  pfSense 2.3 has Netmap compiled in by default now (this is new, the 2.2.x line did not use Netmap).  So we may be seeing some growing pains from the new technology.

You may be stuck with using Legacy Mode blocking for the near term while any potential Netmap bugs are sorted out.

Bill

[teknologist]

Hi Bill,

Makes sense. Anyways, I am going back to Snort which has been working well for years now.
I just wanted to see where things were evolving… ;-)

Again, thanks for your help and reactivity!

Cheers,

Eric

[bmeeks]

Snort does not currently use Netmap, and the fact it works but Suricata does not with inline mode (which does use Netmap) seems to me at least to point the finger at Netmap itself.

I'm sure this will get fixed.  Netmap has great promise for providing really high performance operations for packet inspection and forwarding.  The pfSense team will likely be working with the FreeBSD folks to get this figured out and fixed.

Bill

[teknologist]

That is fantastic news. I would certainly benefit from highspeed as right now I am on 1Gbps FFTH and snort caps me to 350Mbps… ;-)

i'll definitely keep an eye on it.

Keep up the great work!

[pouzar]

Hello,

I read your discussion about wan kill connection problem / Suricata inline mode. I have the same problem and cannot reach solution.
Have you found any solution? I would like to use inline mode (legacy mode working OK). Propably is problem in netmap HW.  Same configuraction, but in vmware host is working well.

Thank you

Martin Pouzar

[Wisiwyg]

@bmeeks:

Snort does not currently use Netmap, and the fact it works but Suricata does not with inline mode (which does use Netmap) seems to me at least to point the finger at Netmap itself.

I'm sure this will get fixed.  Netmap has great promise for providing really high performance operations for packet inspection and forwarding.  The pfSense team will likely be working with the FreeBSD folks to get this figured out and fixed.

Bill

Any progress on the netmap update? How would we know of a resolution other than the system pulling an updated file? TIA!

[bmeeks]

@Wisiwyg:

@bmeeks:

Snort does not currently use Netmap, and the fact it works but Suricata does not with inline mode (which does use Netmap) seems to me at least to point the finger at Netmap itself.

I'm sure this will get fixed.  Netmap has great promise for providing really high performance operations for packet inspection and forwarding.  The pfSense team will likely be working with the FreeBSD folks to get this figured out and fixed.

Bill

Any progress on the netmap update? How would we know of a resolution other than the system pulling an updated file? TIA!

You will need to follow the bug reports on Redmine.  I am not a kernel developer and thus am not working on the Netmap problem.  That will be up to the pfSense developers and/or the FreeBSD folks.  From what I can tell looking at the various issues mentioned here on the forums, there are issues with Netmap and with IPSEC traffic on some NIC drivers.

I suspect for sure nothing would be fixed with Netmpa until at least the 2.3.1 version of pfSense goes to release.

Bill

[Wisiwyg]

2.3.1 Release out today…

I've loaded it up to see if it corrects things.

[teknologist]

@Wisiwyg:

2.3.1 Release out today…

I've loaded it up to see if it corrects things.

Yes, and ?

[cmb]

@Wisiwyg:

2.3.1 Release out today…

I've loaded it up to see if it corrects things.

No, 2.3_1 (2.3.0_1 really, we'll be more clear on the assumed 0 in the future). The only change is upgrading NTP, it won't have any impact on anything to do with the kernel.

@bmeeks:

From what I can tell looking at the various issues mentioned here on the forums, there are issues with Netmap and with IPSEC traffic on some NIC drivers.

I suspect for sure nothing would be fixed with Netmpa until at least the 2.3.1 version of pfSense goes to release.

That was just a working theory, that problem ended up having no relation to netmap. Though the issues that exist with it and inline IPS need to be narrowed down and have their own bug(s) opened. That's low on my priority list at the moment.

Bill if you have any specifics on what the issues with it are, no need to identify a root cause, go ahead and open a bug ticket.

[bmeeks]

@cmb:

Bill if you have any specifics on what the issues with it are, no need to identify a root cause, go ahead and open a bug ticket.

There is a bug already open on the incompatibility with Netmap (in Suricata) and the limiter in the traffic shaper.  Apparently traffic shaping does not work with inline IPS mode enabled in Suricata.  The only change on the Suricata side would be the loading of the Netmap device driver when using inline IPS mode.

I don't know what might be causing the original issue this thread was about, but just made a guess that it might be related to the other interface hanging/freezing problems that appeared to be NIC-specific.

Bill

[teknologist]

@bmeeks:

@cmb:

Bill if you have any specifics on what the issues with it are, no need to identify a root cause, go ahead and open a bug ticket.

There is a bug already open on the incompatibility with Netmap (in Suricata) and the limiter in the traffic shaper.  Apparently traffic shaping does not work with inline IPS mode enabled in Suricata.  The only change on the Suricata side would be the loading of the Netmap device driver when using inline IPS mode.

I don't know what might be causing the original issue this thread was about, but just made a guess that it might be related to the other interface hanging/freezing problems that appeared to be NIC-specific.

Bill

Hi Bill,

FYI I don't have traffic shaping enabled here…

[ntct]

Maybe it should be split into two issue.