example Snort Plugin for iec61850 mms decoding

Ubuntu 18.10

1. Install Snort3.0 and Snort_extra
   Reference: https://www.snort.org/documents/snort-3-on-ubuntu-14-16-17-18
2. Copy all files and folders into snort3_extra/src/inspectors/
3. Compile and install Snort_extra again
4. Update Snort config file snort.lua:
   Add iec61850 = {} in section 3.
   Add { when = { proto = 'tcp', ports = '102' }, use = { type = 'iec61850' } } in section 4.

snort --plugin-path /usr/local/lib/snort_extra/ -c /usr/local/etc/snort/snort.lua -R rules.txt -r iec61850.pcap -A cmg

note:

1. /usr/local/lib/snort_extra/ is the location of installed plugin, you may have a different location
2. iec61850.pcap is example pcap file, you can find it in pcap folder
3. rules.txt is example rule file for this plugin, you can find it in rule folder