snort[731]: FATAL ERROR: Cannot decode data link type 113 on openvz VPS

[Ajdin Lupčević via Snort-users <snort-users () lists snort org>]

Hello,

I try to test snort on openvz vps because we need to make detection 
system for our dedicated servers when spam is send fro our network.
when I try to start snort with command snort -i venet0:0 -c 
/etc/snort/snort.conf -T I find messages in /var/log/messages as follow:

Aug  9 06:21:50 test snort[730]: 329 out of 1024 flowbits in use.
Aug  9 06:22:10 test snort[730]:
Aug  9 06:22:10 test snort[730]: [ Port Based Pattern Matching Memory ]
Aug  9 06:22:10 test snort[730]: +- [ Aho-Corasick Summary ] 
-------------------------------------
Aug  9 06:22:10 test snort[730]: | Storage Format    : Full-Q
Aug  9 06:22:10 test snort[730]: | Finite Automaton  : DFA
Aug  9 06:22:10 test snort[730]: | Alphabet Size     : 256 Chars
Aug  9 06:22:10 test snort[730]: | Sizeof State      : Variable (1,2,4 
bytes)
Aug  9 06:22:10 test snort[730]: | Instances         : 235
Aug  9 06:22:10 test snort[730]: |     1 byte states : 220
Aug  9 06:22:10 test snort[730]: |     2 byte states : 15
Aug  9 06:22:10 test snort[730]: |     4 byte states : 0
Aug  9 06:22:10 test snort[730]: | Characters        : 193653
Aug  9 06:22:10 test snort[730]: | States            : 149896
Aug  9 06:22:10 test snort[730]: | Transitions       : 23056914
Aug  9 06:22:10 test snort[730]: | State Density     : 60.1%
Aug  9 06:22:10 test snort[730]: | Patterns          : 9789
Aug  9 06:22:10 test snort[730]: | Match States      : 10624
Aug  9 06:22:10 test snort[730]: | Memory (MB)       : 77.61
Aug  9 06:22:10 test snort[730]: |   Patterns        : 1.12
Aug  9 06:22:10 test snort[730]: |   Match Lists     : 2.50
Aug  9 06:22:10 test snort[730]: |   DFA
Aug  9 06:22:10 test snort[730]: |     1 byte states : 1.36
Aug  9 06:22:10 test snort[730]: |     2 byte states : 72.23
Aug  9 06:22:10 test snort[730]: |     4 byte states : 0.00
Aug  9 06:22:10 test snort[730]: 
+----------------------------------------------------------------
Aug  9 06:22:10 test snort[730]: [ Number of patterns truncated to 20 
bytes: 545 ]
Aug  9 06:22:10 test snort[730]: pcap DAQ configured to passive.
Aug  9 06:22:10 test snort[730]: Acquiring network traffic from "venet0:0".
Aug  9 06:22:10 test snort[730]: Initializing daemon mode
Aug  9 06:22:10 test snort[731]: Daemon initialized, signaled parent 
pid: 730
Aug  9 06:22:10 test snort[731]: Reload thread starting...
Aug  9 06:22:10 test snort[731]: Reload thread started, thread 
0x7f6927ecf700 (732)
Aug  9 06:22:10 test snort[731]: FATAL ERROR: Cannot decode data link 
type 113

I also need to tell you that snort is installed via yum and how can I 
make it work on venet0:0 interace that is active interface on openvz 
vps. If you have any guide or you can explain please let me know.

Best regards.

--

*Ajdin Lupčević**
*System Administrator/Web Hosting Support

*Globalhost d.o.o. **
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