Local browser tools
Your browser performs the calculation. FirewallGuide does not need the address, subnet, or draft rule entered into these local tools.
FirewallGuide Privacy Policy and Data Handling
Learn how FirewallGuide handles browser-tool inputs, public port scans, server logs, correspondence, cookies, external links, and data retention.
Information you choose to provide
You can browse the public site without creating an account. If you email FirewallGuide, the message may include your email address and anything you choose to write or attach. Send only the information needed to explain the correction, accessibility issue, or general question. Do not send passwords, private keys, confidential firewall exports, exploit payloads, or unnecessary personal data.
Browser-based tools
The port reference, subnet calculator, and firewall rule planner run in your browser. The tool code does not submit the values entered into those interfaces to FirewallGuide. Results are educational inputs for your review and are not stored as a firewall configuration by the application. Your browser or device may still retain normal local artifacts such as form history, so avoid entering sensitive production details.
Public port risk scanner
The public port risk scanner is different from the local tools. After you click its scan button, FirewallGuide uses the internet address already associated with that web request as the fixed target for selected TCP connection attempts. There is no field for another target. The scan does not attempt a login, exploit a vulnerability, or save results to the database. The address and last-attempt time are retained briefly in process memory to enforce the cooldown. Ordinary server logs may still contain the request address as described below.
Three different data paths
Public port scan
The server checks the observed public address. It uses short-lived memory for rate control and does not accept another target from the page.
Email and corrections
You control what the message contains. Remove credentials, private keys, customer records, and full configuration exports before sending it.
- Use local tools for planning.
- Use the scanner only on an authorized connection.
- Send the smallest amount of evidence needed for a correction.
Server and security logs
Like most websites, the hosting infrastructure may process the internet address, requested path, timestamp, user-agent string, response status, and related technical data required to deliver and protect the service. Limited logs may be retained for reliability, fault diagnosis, rate control, and abuse prevention. They are not a substitute for a user profile and should not be used to infer sensitive characteristics.
Cookies and measurement
The public reading and tool experience does not require an advertising profile. If a future feature requires a session cookie or privacy-respecting measurement, this policy and the interface should be updated before that use. Browser settings can restrict or delete cookies and stored site data, although doing so may affect future interactive features.
External links and embedded services
Guides link to standards bodies, government security resources, and vendor documentation so readers can verify claims. Following one of those links sends a request to the destination, which applies its own privacy terms. FirewallGuide does not control the destination's logs, cookies, retention, or subsequent links. External sources are linked for evidence, not as a statement about all of their data practices.
Retention, protection, and choices
Correspondence and operational records should be kept only as long as needed for the purpose received, legal obligations, security, and routine backups. Reasonable access controls reduce risk, but no internet service or email channel can promise perfect confidentiality. You may ask about personal information you deliberately supplied, request a correction, or request deletion where applicable and technically feasible by using the contact page. The request may need enough detail to locate the relevant correspondence and verify that it belongs to you.
Policy changes
This notice should change when the site's collection or publishing systems materially change. The page describes the public site, not the independent practices of a linked website, browser extension, internet provider, or security product. The separate terms and conditions explain the rules and limitations that apply when using the site's content and tools.