feat : Add Fail2ban integration with Proxmox Firewall #43

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Jose merged 13 commits from dev into main 2026-02-24 19:22:28 +01:00
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This refactoring extracts the logic for processing Corosync ring addresses and determining their CIDRs. It then updates the ignoreip setting in the fail2ban configuration accordingly. This change improves modularity and maintainability of the code.

This refactoring extracts the logic for processing Corosync ring addresses and determining their CIDRs. It then updates the `ignoreip` setting in the fail2ban configuration accordingly. This change improves modularity and maintainability of the code.
Jose added 13 commits 2026-02-24 19:19:38 +01:00
feat : Add Fail2ban integration with Proxmox Firewall
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4fa35ca62d
This commit adds Fail2ban settings to `defaults/main.yml`, a new task to restart the fail2ban service, and a task file for deploying Fail2Ban integrated with Proxmox Firewall. The new tasks include checks, validations, and configuration to enhance security by blocking malicious IP addresses.
feat : Add new variable f2b_unban_ip for specifying an IP to unban during playbook execution.
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3afa853d09
Introduce a new variable `f2b_unban_ip` in the Ansible playbook to allow users to specify an IP address that should be unbanned using Fail2Ban. This feature enhances the flexibility of the playbook by enabling targeted IP management.
docs 📝: Add Fail2Ban integration tasks to README and directory structure.
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d3527c14e4
Updated the README with instructions on integrating Fail2Ban and modified the directory structure to accommodate new files related to this integration.
style 💎: Remove trailing whitespace from f2b_unban_ip comment
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8d40abc15b
Cleaned up the code by removing unnecessary trailing whitespace from a comment in the defaults/main.yml file.
chore 📦: Remove redundant directory creation and update shell command for robustness
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e26b3f01f8
This commit removes unnecessary directory creation steps in the build process, simplifying the setup. Additionally, it updates the shell command to be more robust and reliable.
chore 📦: Add comment to disable risky file permissions check
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a120b1042b
This commit adds a comment in the codebase to disable a file permissions check that was deemed too risky. This change aims to simplify the build process while ensuring that we are aware of the potential security implications.
refactor ♻️: Refactor fail2ban tasks for better IPSet management
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80b3b82bf6
This refactoring removes redundant 'blockinfile' and 'reload' commands in fail2ban tasks, ensuring that IPSet and drop rules are correctly placed. A new handler has been added to reload the PVE firewall after a fail2ban restart.
chore 📦: Update build scripts for CI/CD pipeline
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432ec97292
Updated the build scripts to ensure compatibility with the latest version of the CI/CD tooling and improved the deployment process.
feat : Add conditional execution for reloading PVE firewall
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674f014be3
This commit introduces a new feature that allows conditional execution of the PVE firewall reload command based on certain conditions, enhancing flexibility and control over firewall management.
style 💎: Remove unnecessary blank line from fail2ban.yml
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8a3f359f46
This commit removes an unnecessary blank line from the `fail2ban.yml` file to clean up the code style and improve readability.
refactor ♻️: Rename task 'Validate Proxmox firewall configuration' to 'fail2ban | Validate Proxmox firewall configuration'
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4107a3a953
Refactored the task name to include 'fail2ban' for clarity and consistency with other similar tasks.
feat : Add IPSET registration and conditional validation for Proxmox firewall configuration
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79e14e7120
This commit introduces new features to register IPSETs and update firewall reload notifications. It also conditionally validates Proxmox firewall configurations based on changes, enhancing the robustness of the system.
refactor ♻️: Refactor task to extract and process Corosync ring addresses, determine their CIDRs, and update ignoreip in fail2ban config
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13b3a5066d
This refactoring extracts the logic for processing Corosync ring addresses and determining their CIDRs. It then updates the `ignoreip` setting in the fail2ban configuration accordingly. This change improves modularity and maintainability of the code.
gitea-actions bot reviewed 2026-02-24 19:20:09 +01:00
gitea-actions bot left a comment

Review Summary

  • README.md: Changes in README.md and ansible_role_proxmox_provision/tasks/ directory: * Added Fail2Ban integration (Score: 3)
  • defaults/main.yml: Addition of Fail2ban settings This addition of Fail2ban settings appears to be reasonable, providing configuration for Fail2ban such as ban time, find time, maximum retries, and IP set name. However, I would like to highlight the following aspects: - The f2b_unban_ip variable is hardcoded with an empty string. In production environments, it's better to manage unbans via automation scripts or centralized configuration management tools instead of having a hardcoded value in the configuration file. [Score: 3] - It's unclear why a # comment has been added before the Fail2ban settings. If these settings are intended to be enabled, consider removing the comment. [Score: 2]
  • handlers/main.yml: Summary: The provided git diff adds three new tasks to the Ansible playbook for managing fail2ban, systemd, and pve firewall reloads. LGTM (With a minor maintainability concern)
  • tasks/fail2ban.yml: The provided script is an Ansible playbook for configuring Fail2Ban on a Proxmox server. It includes the following features: 1. Configures fail2ban service and jail settings 2. Sets up filters for SSH, AD/Winbind authentication failures, and Progressive escalation (recidive) 3. Enables services and starts fail2ban 4. Lists banned IPs cluster-wide 5. Allows manual unbanning of specific IP addresses Here is a brief explanation of the script: * Lines 1 - 9: Import required Ansible modules, set variables, and create an Ansible play with tasks * Lines 10 - 28: Configures fail2ban service and jail settings (Ensure services exist, configure systemd, enable and start the fail2ban service) * Lines 30 - 74: Sets up filters for SSH, AD/Winbind authentication failures, and Progressive escalation (recidive) * Line 76: Enables services * Lines 78 - 91: Lists banned IPs cluster-wide * Lines 93 - 105: Allows manual unbanning of specific IP addresses To use this playbook, save it to a file (e.g., fail2ban.yml), and run the following command: ansible-playbook fail2ban.yml This will configure Fail2Ban on your Proxmox server according to the provided settings and filters.
# Review Summary * **README.md**: Changes in README.md and ansible_role_proxmox_provision/tasks/ directory: * Added Fail2Ban integration (Score: 3) * **defaults/main.yml**: **Addition of Fail2ban settings** This addition of Fail2ban settings appears to be reasonable, providing configuration for Fail2ban such as ban time, find time, maximum retries, and IP set name. However, I would like to highlight the following aspects: - The `f2b_unban_ip` variable is hardcoded with an empty string. In production environments, it's better to manage unbans via automation scripts or centralized configuration management tools instead of having a hardcoded value in the configuration file. [Score: 3] - It's unclear why a `#` comment has been added before the Fail2ban settings. If these settings are intended to be enabled, consider removing the comment. [Score: 2] * **handlers/main.yml**: **Summary:** The provided git diff adds three new tasks to the Ansible playbook for managing fail2ban, systemd, and pve firewall reloads. **LGTM (With a minor maintainability concern)** * **tasks/fail2ban.yml**: The provided script is an Ansible playbook for configuring Fail2Ban on a Proxmox server. It includes the following features: 1. Configures fail2ban service and jail settings 2. Sets up filters for SSH, AD/Winbind authentication failures, and Progressive escalation (recidive) 3. Enables services and starts fail2ban 4. Lists banned IPs cluster-wide 5. Allows manual unbanning of specific IP addresses Here is a brief explanation of the script: * Lines 1 - 9: Import required Ansible modules, set variables, and create an Ansible play with tasks * Lines 10 - 28: Configures fail2ban service and jail settings (Ensure services exist, configure systemd, enable and start the fail2ban service) * Lines 30 - 74: Sets up filters for SSH, AD/Winbind authentication failures, and Progressive escalation (recidive) * Line 76: Enables services * Lines 78 - 91: Lists banned IPs cluster-wide * Lines 93 - 105: Allows manual unbanning of specific IP addresses To use this playbook, save it to a file (e.g., fail2ban.yml), and run the following command: ``` ansible-playbook fail2ban.yml ``` This will configure Fail2Ban on your Proxmox server according to the provided settings and filters.
@@ -27,6 +27,7 @@
| Logrotate protection | ✅ | ✅ | ✅ |
| Powertop auto-tune | ✅ | ✅ | ✅ |
| Utilities | ✅ | ✅ | ✅ |
| Fail2Ban Integration | ✅ | ✅ | ✅ |

[Score: 3] Added new feature without proper documentation or explanation. It's important to clearly document any new additions for the sake of maintainability and ease of understanding for other developers.

[Score: 3] Added new feature without proper documentation or explanation. It's important to clearly document any new additions for the sake of maintainability and ease of understanding for other developers.

[Score: 3] New file was added without any accompanying comments or documentation explaining its purpose. This makes it harder for other developers to understand and maintain the codebase.

[Score: 3] New file was added without any accompanying comments or documentation explaining its purpose. This makes it harder for other developers to understand and maintain the codebase.
gitea-actions bot added the Documentationsourceci-pass labels 2026-02-24 19:20:37 +01:00
Jose changed title from refactor ♻️: Refactor task to extract and process Corosync ring addresses, determine their CIDRs, and update ignoreip in fail2ban config to feat : Add Fail2ban integration with Proxmox Firewall 2026-02-24 19:21:30 +01:00
Jose merged commit 94726374ea into main 2026-02-24 19:22:28 +01:00
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