com.samsung.android.knox.app.networkfilter Copy

Labelled "KnoxNetworkFilter" on the device, this is a small Samsung Knox component (roughly 150 to 190 KB in our sample) signed by a Samsung OEM key that also signs the Android framework. It has no launcher icon. Its declared permissions are network-oriented: access to network and Wi-Fi state, internet access, use of restricted networks, the ability to act across users, the ability to query all installed packages, and a Knox analytics permission. Samsung documents the Knox Firewall as the enterprise feature that fits this shape. Knox Firewall lets an administrator allow, deny or redirect access to specific IP addresses, allow or deny whole domains or sub-domains, and apply those rules to a single app or the whole device, with logs of blocked domain access attempts. In the Knox SDK the same capability appears as the Firewall and DomainFilterRule APIs that an EMM calls, where domain rules work by filtering DNS resolution and IP rules are enforced through iptables once the firewall is enabled. Note that Samsung's published documentation describes the feature without naming this package, so the link between the two is inferred here from the package name, its on-device label and its declared permissions rather than taken from a Samsung statement. For Android Enterprise, EMM and kiosk deployments this matters if your profile applies Knox firewall or URL filtering rules, since disabling a component that filtering may depend on could quietly leave a device unfiltered while the console still reports the policy as applied. Treat it as caution: leave it in place on managed Samsung hardware, and if you are trimming an image, verify your filtering policies still block what they should on a test device afterwards. Version note: no Android or One UI release that changed this package's role could be sourced. On the feature side, Samsung documents that Knox SDK 3.3 added the ability to use domain name rules and IP firewall rules at the same time, so what an EMM can express through Knox firewall policy depends on the Knox version on the device rather than on Android alone.

• Knox Firewall - Samsung Knox mobile security whitepaper, Samsung Knox Documentation →
• Firewalls - Knox SDK, Samsung Knox Documentation →
• Package provenance for com.samsung.android.knox.app.networkfilter - Android System App Database →

• Signed by the device maker's own signing key (Samsung), so it is an OEM preinstall, and that single certificate is consistent across all 18 device profiles. It also signs the Android framework, so it is a platform-level key on its device(s). Inferred from the certificate appearing only on Samsung devices (508 packages, 10196 observations).
• Its largest observed manifest declares 8 permissions: 2 signature or system-level, 4 install-time and 2 vendor or uncatalogued.
• Never reported as user-facing, so it runs as a background or system component rather than an app the user opens.