--- title: "How frequently is firewall configuration reviewed and firmware updated?" url: https://insuranceposture.com/questions/network-and-logging/frequently-firewall-configuration-reviewed-firmware-updated category: "Network, logging and monitoring" canonical_key: q_net_009 evidence_state: partial updated: 2026-08-24 --- # How frequently is firewall configuration reviewed and firmware updated? URL: https://insuranceposture.com/questions/network-and-logging/frequently-firewall-configuration-reviewed-firmware-updated Section: Network, logging and monitoring Evidence state: Partly verifiable from your tenant Edge devices are internet-facing, hold credentials, and sit outside most patch programmes. They have become one of the most exploited categories in the market. ## What the carrier is actually asking The carrier is asking two things: how often the rule base is reviewed for rules that are no longer needed, and how often device firmware is updated. Both matter and the second has become urgent. ## Why it is underwritten Vulnerabilities in firewalls, VPN concentrators, and remote access gateways have driven a large share of recent intrusions, because they are internet-facing by definition and frequently unpatched. Rule review matters separately, because a rule base that only ever grows becomes permissive over time. ## Where the answer lives in Microsoft 365, Entra ID, and Azure Edge devices sit outside the cloud tenant, so this is attested. The review record is the evidence. | Platform | Where the setting lives | What has to be true | | --- | --- | --- | | Firewall | Rule base with last-used data and rule owners | Unused rules identified and removed, with each remaining rule attributable. Attested | | Firewall | Firmware version against the vendor current release and advisories | Current firmware, with a process for emergency updates when advisories are published | | Review records | Dated review with findings and changes made | Evidence the review happened and produced changes | | Vendor advisories | Subscription to vendor security advisories | A route by which you learn about a critical edge advisory within a day rather than a month | | Azure | Cloud firewall and gateway configuration where used | Managed services patch themselves, which is a genuine advantage worth stating | **Edge firmware needs the emergency path** Critical vulnerabilities in edge devices are exploited within days of disclosure, sometimes hours. Whatever your general patch window, edge devices need a shorter one and a route that does not wait for the next change window. ## What a defensible yes requires - The rule base is reviewed at least annually with a record of what was removed. - Firmware is current and a process exists for emergency updates. - Vendor advisories are subscribed to and monitored. - Rules have owners, so review is possible rather than archaeological. - Management interfaces on these devices are not reachable from the internet. ## How this answer goes wrong Firmware is treated as infrastructure rather than software, so it is updated when a feature is needed rather than when a vulnerability is published. Devices run versions with public exploits available while the organisation reports a strong patch cadence based on its server estate. ## If this answer turns out to be wrong Remote access exposure and log retention are what a forensic report describes first, which makes them the answers most often revisited after a loss. Whether anything follows from an inaccuracy depends on materiality, on the policy wording, and on the law of the governing state: [how an application answer ends in a denied claim](https://insuranceposture.com/glossary/claim-denial). The other consequence terms are collected in the [glossary](https://insuranceposture.com/glossary). ## Frequently asked ### How often should rules be reviewed? Annually as a floor, semi-annually for complex rule bases. The value is in removing rules, so a review that changes nothing was probably not a review. ### How quickly should firmware be patched? Critical advisories within days. These devices are internet-facing and actively targeted, which justifies a shorter window than the rest of the estate. ### What about cloud-managed firewalls? The provider patches the platform, which removes the firmware half of the question. Say so; it is a real advantage. ### Should the management interface be exposed? Never to the internet. Compromised edge management interfaces have caused a substantial number of recent intrusions. ## Related questions - [Are administrative/management login portals restricted from the public internet (closed or limited to specific IP addresses)?](https://insuranceposture.com/questions/network-and-logging/administrative-management-login-portals-restricted-from-public-internet) - [What is the critical patching target (24h / 72h / 7d / >7d)?](https://insuranceposture.com/questions/endpoint-and-patching/critical-patching-target) - [Can network ports only be opened with a legitimate business need? Port accessibility regularly verified?](https://insuranceposture.com/questions/network-and-logging/can-network-ports-only-opened-legitimate-business-need-port) - [Does the Applicant use any operating system, hardware or software that is no longer supported / End-of-Life?](https://insuranceposture.com/questions/endpoint-and-patching/applicant-operating-system-hardware-software-no-longer-supported-end) --- Insurance Posture by SecValley. https://insuranceposture.com The question library is written in our own wording to reflect the control topics that recur across US cyber application and ransomware supplemental forms. No carrier form is republished. SecValley is not a law firm, an insurance broker, an agent, or a carrier, and holds no producer licence. Nothing here is insurance advice, legal advice, or a coverage determination, and no attorney-client relationship arises from reading it. Statements about what a party to a cited case did, knew, or intended are allegations drawn from court filings and contemporaneous reporting, not findings of fact. Your organization's authorized signer remains responsible for the accuracy of any application. Consult a licensed broker and qualified counsel before binding.