Python Meraki Firewall Groups and Objects

Small Python utility for bulk creation of Meraki policy objects and object groups from a text list.

What it does

• reads IP/CIDR and FQDN entries from an input file,
• validates entries and normalizes names,
• creates missing Meraki policy objects,
• reuses IDs for objects that already exist,
• creates/updates an object group from created/found object IDs,
• writes results to objects_created.json.

Project layout

• meraki_object_loader.py - main entrypoint
• meraki_utils.py - validation and API helper functions
• meraki_api_test.py - simple API connectivity test script
• input_examples.txt - example input file with different object types

Requirements

• Python 3.10+
• packages: meraki, requests

Environment variables

• MERAKI_API_KEY (required)
• MERAKI_ORG_ID (required)
• MERAKI_GROUP_NAME (optional, default: G_POLICY_OBJECTS)
• MERAKI_INPUT_FILE (optional, default: lista.txt)

Input format

Each non-empty line in the input file:

value[,custom_name]

Examples:

• 10.10.10.10
• 10.10.20.0/24,BranchA_Net
• printer01.example.com,Printer01

For a full sample list (hosts, CIDR networks, FQDNs), use input_examples.txt.

Object naming rules

Names are generated in meraki_utils.py and truncated to 50 characters.

• IPv4 host (/32) -> H_<ip_with_underscores> Example: 10.10.10.10 -> H_10_10_10_10

• IPv4 network (/<prefix> other than /32) -> N_<network_ip_with_underscores>-<prefix> Example: 10.10.20.0/24 -> N_10_10_20_0-24

• FQDN -> normalized FQDN value (or custom_name if provided) Example: printer01.example.com -> printer01_example_com

• If custom_name is provided for IP/CIDR, it is appended: <base_name>_<normalized_custom_name> Example: 10.10.20.0/24,BranchA -> N_10_10_20_0-24_BranchA

Run

source .venv/bin/activate
export MERAKI_API_KEY='your_key'
export MERAKI_ORG_ID='123456'
export MERAKI_INPUT_FILE='input_examples.txt'
python meraki_object_loader.py