Snort.lua Question

Jim Campbell via Snort-users <[email protected]> Thu, 22 Jun 2023 12:28:54 -0400
Newsgroups gmane.comp.security.ids.snort.general
Message-ID <[email protected]>
Not getting an answer to my previous question I've tried a different 
approach. I installed newer dependencies and then Snort3 3.1.64.0. This 
is what /usr/local/bin/snort -V gives me:

    ,,_     -*> Snort++ <*-
   o"  )~   Version 3.1.64.0
    ''''    By Martin Roesch & The Snort Team
            http://snort.org/contact#team
            Copyright (C) 2014-2023 Cisco and/or its affiliates. All 
rights reserved.
            Copyright (C) 1998-2013 Sourcefire, Inc., et al.
            Using DAQ version 3.0.12
            Using LuaJIT version 2.1.0-beta3
            Using OpenSSL 1.1.1f  31 Mar 2020
            Using libpcap version 1.9.1 (with TPACKET_V3)
            Using PCRE version 8.45 2021-06-15
            Using ZLIB version 1.2.11
            Using Hyperscan version 5.4.2 2023-06-21
            Using LZMA version 5.2.4

With this setup Snort almost runs. I toggle between two errors. If I 
invoke Snort3 with the following:

ips =
{
     -- use this to enable decoder and inspector alerts
     enable_builtin_rules = true,
     include = RULE_PATH .. "/pulledpork.rules",
     -- use include for rules files; be sure to set your path
     -- note that rules files can include other rules files
     -- (see also related path vars at the top of snort_defaults.lua)
     variables = default_variables
}

jim@jim-ThinkCentre-M82:~$ snort -c /usr/local/etc/snort/snort.lua -s 
65535 -k none -l /var/log/snort/ -Q -D -u snort -g snort --daq afpacket 
-i "enp1s0:enp3s0" -m 0x1b --plugin-path /usr/local/etc/so_rules/

I get 267 errors:
...
Finished file_id.rules_file:
Loading ../rules/pulledpork.rules:
ERROR: ../rules/pulledpork.rules:19 SO rule 34369 not loaded.
ERROR: ../rules/pulledpork.rules:20 SO rule 35347 not loaded.
ERROR: ../rules/pulledpork.rules:21 SO rule 35926 not loaded.
...

The "--plugin-path /usr/local/etc/so_rules/" isn't getting the so_rules 
to load.

===============================================

If I invoke snort3 with the following:

ips =
{
     -- use this to enable decoder and inspector alerts
     enable_builtin_rules = true,
     include = RULE_PATH .. "/pulledpork.rules",
     include = PLUGIN_RULE_PATH,
     -- use include for rules files; be sure to set your path
     -- note that rules files can include other rules files
     -- (see also related path vars at the top of snort_defaults.lua)
     variables = default_variables
}

jim@jim-ThinkCentre-M82:~$ snort -c /usr/local/etc/snort/snort.lua -s 
65535 -k none -l /var/log/snort/ -Q -D -u snort -g snort --daq afpacket 
-i "enp1s0:enp3s0" -m 0x1b

The so_rules load but I get the following error:

--------------------------------------------------
afpacket DAQ configured to inline.
initializing daemon mode
child process is 137323
Commencing packet processing
Couldn't construct a DAQ instance: create_instance: Could not open the 
PF_PACKET socket: Operation not permitted (-1)
--------------------------------------------------

Any help would be much appreciated.

Jim Campbell






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