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dockerfiles/snort/README.md

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snort
=====
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![](https://badge.imagelayers.io/vimagick/snort:latest.svg)
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[Snort][1] is an open source intrusion prevention system capable of real-time
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traffic analysis and packet logging.
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```yaml
snort:
image: vimagick/snort
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command: -q -c /etc/snort/snort.conf -y -i eth0
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volumes:
- ./data/snort.conf:/etc/snort/snort.conf
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- ./data/u2json.conf:/etc/snort/u2json.conf
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- ./data/rules:/etc/snort/rules
- ./data/log:/var/log/snort
cap_add:
- NET_ADMIN
net: host
restart: unless-stopped
```
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```bash
# /etc/snort/rules/local.rules
alert icmp any any -> any any (msg:"ICMP Echo Request"; itype:8; sid:10000;)
alert icmp any any -> any any (msg:"ICMP Echo Reply"; itype:0; sid:10001;)
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```
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```bash
$ docker-compose up -d
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$ docker-compose exec snort idstools-u2json @/etc/snort/u2json.conf
INFO: Loaded 523 rule message map entries.
INFO: Loaded 38 classifications.
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$ tail -f data/log/alert.json
{"type":"event","event":{"impact":0,"generator-id":1,"protocol":1,"dport-icode":0,"signature-revision":0,"classification-id":0,"signature-id":1000000,"sensor-id":0,"impact-flag":0,"sport-itype":8,"priority":0,"event-second":1591597954,"pad2":null,"destination-ip":"1.2.3.4","event-id":55,"mpls-label":null,"vlan-id":null,"source-ip":"5.6.7.8","event-microsecond":905105,"blocked":0}}
{"type":"event","event":{"impact":0,"generator-id":1,"protocol":1,"dport-icode":0,"signature-revision":0,"classification-id":0,"signature-id":1000001,"sensor-id":0,"impact-flag":0,"sport-itype":0,"priority":0,"event-second":1591597954,"pad2":null,"destination-ip":"5.6.7.8","event-id":56,"mpls-label":null,"vlan-id":null,"source-ip":"1.2.3.4","event-microsecond":905126,"blocked":0}}
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$ while :; do inotifywait -q -e modify data/log/alert.json && play -q alert.wav; done
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```
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[1]: https://snort.org/