snort suddenly stopped to record events

[linux () vfemail net]

Hello snort events,

I have snort installed on centos-5.9 and configured to work with  
barnyard and update rules using pulledpork.

[root@ids snort]# cat /etc/issue
CentOS release 5.9 (Final)
Kernel \r on an \m

[root@ids snort]#

All packets below has been compiled and installed on the same machine,  
using src.rpm!

snort-2.9.3.1-1.x86_64
barnyard2-1.9-el5.x86_64
pulledpork-0.6.2-1.x86_64

The configuration is similar with the one described here, without mysql:
http://www.snort.org/assets/158/snortinstallguide293.pdf

in /etc/snort/snort.conf I have:

output unified2: filename merged.log, limit 128

Starting using snort -u snort -g snort -c /etc/snort/snort.conf -i eth4

snort is starting clen (see snort_dump.txt attached), so it seems that  
everything is ok, but no events logged into  
/var/log/snort/merged.log.1374504770. Merged.log still remain empty!!!

Attached you have output of:

# snort -c /etc/snort/snort.conf -T &> snort_dump.txt

After ~30 minutes, I hit CTRL+C and I am able to see:

Commencing packet processing (pid=11307)
...
*** Caught Int-Signal
===============================================================================
Run time for packet processing was 1974.990819 seconds
Snort processed 4530 packets.
Snort ran for 0 days 0 hours 32 minutes 54 seconds
   Pkts/min:          141
   Pkts/sec:            2
===============================================================================
Packet I/O Totals:
   Received:         4530
   Analyzed:         4530 (100.000%)
    Dropped:            0 (  0.000%)
   Filtered:            0 (  0.000%)
Outstanding:            0 (  0.000%)
   Injected:            0
===============================================================================
Breakdown by protocol (includes rebuilt packets):
        Eth:         4530 (100.000%)
       VLAN:            0 (  0.000%)
        IP4:         3470 ( 76.600%)
       Frag:            0 (  0.000%)
       ICMP:            1 (  0.022%)
        UDP:         3462 ( 76.424%)
        TCP:            1 (  0.022%)
        IP6:            0 (  0.000%)
    IP6 Ext:            0 (  0.000%)
   IP6 Opts:            0 (  0.000%)
      Frag6:            0 (  0.000%)
      ICMP6:            0 (  0.000%)
       UDP6:            0 (  0.000%)
       TCP6:            0 (  0.000%)
     Teredo:            0 (  0.000%)
    ICMP-IP:            0 (  0.000%)
      EAPOL:            0 (  0.000%)
    IP4/IP4:            0 (  0.000%)
    IP4/IP6:            0 (  0.000%)
    IP6/IP4:            0 (  0.000%)
    IP6/IP6:            0 (  0.000%)
        GRE:            0 (  0.000%)
    GRE Eth:            0 (  0.000%)
   GRE VLAN:            0 (  0.000%)
    GRE IP4:            0 (  0.000%)
    GRE IP6:            0 (  0.000%)
GRE IP6 Ext:            0 (  0.000%)
   GRE PPTP:            0 (  0.000%)
    GRE ARP:            0 (  0.000%)
    GRE IPX:            0 (  0.000%)
   GRE Loop:            0 (  0.000%)
       MPLS:            0 (  0.000%)
        ARP:          762 ( 16.821%)
        IPX:           58 (  1.280%)
   Eth Loop:            0 (  0.000%)
   Eth Disc:            0 (  0.000%)
   IP4 Disc:            0 (  0.000%)
   IP6 Disc:            0 (  0.000%)
   TCP Disc:            0 (  0.000%)
   UDP Disc:            0 (  0.000%)
  ICMP Disc:            0 (  0.000%)
All Discard:            0 (  0.000%)
      Other:          246 (  5.430%)
Bad Chk Sum:            0 (  0.000%)
    Bad TTL:            0 (  0.000%)
     S5 G 1:            0 (  0.000%)
     S5 G 2:            0 (  0.000%)
      Total:         4530
===============================================================================
Action Stats:
     Alerts:            0 (  0.000%)
     Logged:            0 (  0.000%)
     Passed:            0 (  0.000%)
Limits:
      Match:            0
      Queue:            0
        Log:            0
      Event:            0
      Alert:            0
Verdicts:
      Allow:         4530 (100.000%)
      Block:            0 (  0.000%)
    Replace:            0 (  0.000%)
  Whitelist:            0 (  0.000%)
  Blacklist:            0 (  0.000%)
     Ignore:            0 (  0.000%)
===============================================================================
Frag3 statistics:
        Total Fragments: 0
      Frags Reassembled: 0
               Discards: 0
          Memory Faults: 0
               Timeouts: 0
               Overlaps: 0
              Anomalies: 0
                 Alerts: 0
                  Drops: 0
     FragTrackers Added: 0
    FragTrackers Dumped: 0
FragTrackers Auto Freed: 0
    Frag Nodes Inserted: 0
     Frag Nodes Deleted: 0
===============================================================================
Stream5 statistics:
            Total sessions: 92
              TCP sessions: 0
              UDP sessions: 92
             ICMP sessions: 0
               IP sessions: 0
                TCP Prunes: 0
                UDP Prunes: 0
               ICMP Prunes: 0
                 IP Prunes: 0
TCP StreamTrackers Created: 0
TCP StreamTrackers Deleted: 0
              TCP Timeouts: 0
              TCP Overlaps: 0
       TCP Segments Queued: 0
     TCP Segments Released: 0
       TCP Rebuilt Packets: 0
         TCP Segments Used: 0
              TCP Discards: 0
                  TCP Gaps: 0
      UDP Sessions Created: 92
      UDP Sessions Deleted: 92
              UDP Timeouts: 0
              UDP Discards: 0
                    Events: 0
           Internal Events: 0
           TCP Port Filter
                   Dropped: 0
                 Inspected: 0
                   Tracked: 1
           UDP Port Filter
                   Dropped: 0
                 Inspected: 795
                   Tracked: 92
===============================================================================
===============================================================================
SMTP Preprocessor Statistics
  Total sessions                                    : 0
  Max concurrent sessions                           : 0
===============================================================================
dcerpc2 Preprocessor Statistics
  Total sessions: 0
===============================================================================
===============================================================================
SIP Preprocessor Statistics
  Total sessions: 0
===============================================================================
Reputation Preprocessor Statistics
  Total Memory Allocated: 0
===============================================================================
Snort exiting
[root@ids ~]#

So, how can I produce an alert or test that snort is working is  
working and producing alerts? I have files older that 2 months and  
snort events has been logged inside but after that nothing logged  
inside events file!

I've changed just monitored interface from eth1 to eth4, and IP  
address of ipvar HOME_NET from [192.168.48.0/24] to [192.168.51.0/24]

Please, help me to debug ... I am lost ... Could be some new updates  
received using pulledpork? Some misconfigured rules received using  
pulledpork? Why snort is not logging?

Regards,
Alx



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