ModsFinder

IPWhitelist

by CORE Minecraft

IPWhitelist adds a second admission check on Fabric servers, so a player whose Mojang account is valid still cannot join unless the connecting IP address is approved.

FabricServer-side onlyGNU General Public License v3.0 onlyOpen source1.21.1 – 26.3

What it does

Admission is tested before authentication finishes. The mod binds an approved IP address to a player name, so a connection from any other address is refused even when the account is valid. Connections that fail are rejected before they consume much server time, which limits the load a bot flood can place on a server. Admins add players with commands, and a wildcard suffix, CIDR notation such as 192.168.1.0/24, or an exact address can cover several addresses at once. IPv4 and IPv6 are both accepted.

Access to the mod's tools is restricted in its own way. Listed IPWL admins can run the lockdown command and view recent connections, and the server console keeps full access at all times. Removing an admin takes effect at once, without a rejoin. Temporary access can be granted for a set duration such as 30m, 2h, 1d or 3600s, without changing the permanent whitelist, and it expires on its own. Online admins receive a clickable chat message when someone tries to join without approval, and the server console prints the same details.

IPWhitelist is a server-side mod for Fabric and Java 25, with files for 1.21.1 – 26.3. It requires Fabric API, and it is released under the GNU General Public License v3.0 only, so it is open source with public source code, an issue tracker and a wiki.

Key features

  1. Per-player IP binding

    Each player name is tied to one or more approved addresses, and a join from any other address is refused.

  2. Early rejection of blocked connections

    Connections are turned away before authentication completes, so rejected players use only minimal server resources.

  3. Wildcard, CIDR and IPv6 matching

    Prefix wildcards, CIDR ranges such as 192.168.1.0/24 and IPv6 addresses can all be listed for a player.

  4. Temporary access grants

    Time-limited approvals with durations like 30m or 1d leave the permanent whitelist untouched and expire automatically.

  5. Live admin notifications

    Online admins get a clickable chat message for each blocked join attempt, and the console prints the same details.

  6. Automatic abuse detection

    The mod detects abusive connection patterns and enforces both ban types before authentication completes.

Compatibility

Latest build for each game version and loader.

26.x4 of 4 versions with builds
26.31.5.5
26.21.5.3
26.1.11.5.4
26.11.5.4
1.21.x11 of 11 versions with builds
1.21.111.5.3
1.21.101.5.3
1.21.91.5.3
1.21.81.5.3
1.21.71.5.3
1.21.61.5.3
1.21.51.5.3
1.21.41.5.3
1.21.31.5.3
1.21.21.5.3
1.21.11.5.3
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Required 1

Fabric APILightweight and modular API providing common hooks and intercompatibility measures utilized by mods using the Fabric toolchain.
Required

How it compares

Full comparison

Fabric-GeoLogin is a server-side mod released under the MIT License and open source, with files for 1.21.4 – 1.21.10, and it controls access through geographic location. Discord Verifier is also server-side and open source under the GNU General Public License v3.0 only, but it is published only for 1.21 – 1.21.1 and verifies players through Discord. IPWhitelist covers 1.21.1 – 26.3 and checks the connecting IP address itself.

ModLoadersGame versionsEnvironmentUpdated
IPWhitelistFabric1.21.1 – 26.3Server-side only2026-10-10
Fabric-GeoLoginFabric1.21.4 – 1.21.10Server-side only2025-10-13
Discord VerifierFabric1.21 – 1.21.1Server-side only2024-09-27

Questions

Does IPWhitelist need Fabric API?

Yes. Fabric API is a required dependency, so it must be installed alongside IPWhitelist on the server.

Does IPWhitelist have to be installed on the client?

No. IPWhitelist is server-side only, so players join without installing anything. Only the server needs the mod.

Which game versions does IPWhitelist cover?

The mod has Fabric files for 15 release versions, with the newest build being 1.5.5 for 26.3, published on 2026-10-10.

In the catalog

IPWhitelist is one of 8,016 Management mods on ModsFinder, and one of 5,930 Management mods for Fabric. 8,071 mods support Minecraft 26.3.

Management mods8,016Fabric modsMods for 26.38,071

More from CORE Minecraft

All projects
AutoCrop1.21.6 – 26.3

Similar mods

Cherished Worlds1.12.2 – 26.3Default Options1.18 – 26.3Axiom1.20 – 26.3Resourcify1.8.9 – 26.3Rebind Narrator1.16.1 – 26.1.2Paxi1.19.2 – 26.1.2

What the author says

Minecraft: 1.21.1-26.3 | Loader: Fabric | Java: 25 | License: GPL A server-side mod that adds a second security layer on top of Mojang authentication. Every player is bound to one or more approved IP addresses, even if someone has a valid account, they cannot join unless they are connecting from a pre-approved IP…
CORE Minecraft, on the Modrinth page

Official listing

Owner
CORE Minecraft
Published
2026-01-06
Updated on Modrinth
2026-10-10
Facts verified
2026-10-15

Tags

ManagementUtility
Open on ModrinthCompare