This repo contains the code, templates and playbooks that accompanies the:
Hands-on Guide to Multi-Tiered Firewall Changes with Ansible and Batfish
- https://packetflow.co.uk/a-hands-on-guide-to-multi-tiered-firewall-changes-with-ansible-and-batfish-part-1/
- https://packetflow.co.uk/a-hands-on-guide-to-multi-tiered-firewall-changes-with-ansible-and-batfish-part-2/
- https://packetflow.co.uk/a-hands-on-guide-to-multi-tiered-firewall-changes-with-ansible-and-batfish-part-3/
git clone https://github.com/rickdonato/batfish-ansible-dual-tier-fw-demo
cd batfish-ansible-dual-tier-fw-demo
make add-venv-py3.6
source venv/bin/activate
To spin up the VIRL topology run the command:
make start-virl-topology
Any issues stop/remove topology from VIRL UWM UI, and remove the id file via rm .virl/*/id.
├── ansible
│ ├── ansible.cfg
│ ├── data
│ │ ├── bf_facts
│ │ │ ├── expected
│ │ │ │ ├── db.yml
│ │ │ │ ├── fw1.yml
│ │ │ │ ├── fw2.yml
│ │ │ │ └── websrv.yml
│ │ │ └── extract
│ │ │ ├── db.yml
│ │ │ ├── fw1.yml
│ │ │ ├── fw2.yml
│ │ │ └── websrv.yml
│ │ ├── snapshots
│ │ │ └── snapshot
│ │ │ ├── configs
│ │ │ │ ├── fw1.cfg
│ │ │ │ └── fw2.cfg
│ │ │ ├── hosts
│ │ │ │ ├── db.json
│ │ │ │ └── websrv.json
│ │ │ └── iptables
│ │ │ ├── db.iptables
│ │ │ └── websrv.iptables
│ │ └── templates
│ │ └── hosts.j2
│ ├── inventory
│ │ └── hosts
│ └── playbooks
│ ├── bf_gather_validate_facts.yml
│ ├── bf_init_snapshot.yml
│ ├── bf_validate_acls_flows.yml
│ ├── bf_validate_snapshot.yml
│ ├── create_bf_snapshot.yml
│ └── push_config.yml
├── Makefile
├── README.md
├── requirements.txt
└── topology.virl
Note: The playbooks that use the Batfish modules are named bf_xxxxxx.yml.
- VIRL topology - Cisco ASA requires a new key pair to be created on each boot. Therefore
crypto key generate rsa general-keys modulus 2048 noconfirmis added to the configuration. This command however is removed if you perform an "extract configs" from within VIRL.
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