diff --git a/frontend/src/components/admin/StatisticsCard.vue b/frontend/src/components/admin/StatisticsCard.vue
index 3be63df..24400ba 100644
--- a/frontend/src/components/admin/StatisticsCard.vue
+++ b/frontend/src/components/admin/StatisticsCard.vue
@@ -1,37 +1,24 @@
 <script setup lang="ts">
 import {computed, defineProps} from "vue";
+import type {NodesFilter} from "@/types";
 
-const props = defineProps({
-    title: {
-        type: String,
-        required: true,
-    },
-    icon: {
-        type: String,
-        required: true,
-    },
-    variant: {
-        type: String,
-        required: true,
-    },
-    value: {
-        type: Number,
-        required: true,
-    },
-    link: {
-        type: String,
-        required: true,
-    },
-    filter: {
-        type: Object,
-        required: false,
-    },
-});
+interface Props {
+    title: string;
+    icon: string;
+    variant: string;
+    value: number;
+    link: string;
+    filter?: NodesFilter;
+}
+
+const props = defineProps<Props>();
 
 const linkTarget = computed(() => {
     if (props.filter) {
-        const json = JSON.stringify(props.filter);
-        return `${props.link}?search=${encodeURIComponent(json)}`;
+        return {
+            path: props.link,
+            query: props.filter,
+        }
     } else {
         return props.link;
     }
diff --git a/frontend/src/router/index.ts b/frontend/src/router/index.ts
index 0a2f2ad..8ce86c1 100644
--- a/frontend/src/router/index.ts
+++ b/frontend/src/router/index.ts
@@ -1,7 +1,8 @@
-import { createRouter, createWebHistory } from "vue-router";
+import {createRouter, createWebHistory} from "vue-router";
 import AdminDashboardView from "@/views/AdminDashboardView.vue";
 import AdminNodesView from "@/views/AdminNodesView.vue";
 import HomeView from "@/views/HomeView.vue";
+import {isNodesFilter} from "@/types";
 
 const router = createRouter({
     history: createWebHistory(import.meta.env.BASE_URL),
@@ -20,6 +21,9 @@ const router = createRouter({
             path: "/admin/nodes",
             name: "admin-nodes",
             component: AdminNodesView,
+            props: route => ({
+                filter: isNodesFilter(route.query) ? route.query : {}
+            })
         },
     ],
 });
diff --git a/frontend/src/stores/nodes.ts b/frontend/src/stores/nodes.ts
index a59a304..ef3ec75 100644
--- a/frontend/src/stores/nodes.ts
+++ b/frontend/src/stores/nodes.ts
@@ -1,5 +1,5 @@
 import {defineStore} from "pinia";
-import {isEnhancedNode, type EnhancedNode} from "@/types";
+import {type EnhancedNode, isEnhancedNode, type NodesFilter} from "@/types";
 import {internalApi} from "@/utils/Api";
 
 interface NodesStoreState {
@@ -37,12 +37,13 @@ export const useNodesStore = defineStore({
         },
     },
     actions: {
-        async refresh(page: number, nodesPerPage: number): Promise<void> {
+        async refresh(page: number, nodesPerPage: number, filter: NodesFilter): Promise<void> {
             const result = await internalApi.getPagedList<EnhancedNode>(
                 "nodes",
                 isEnhancedNode,
                 page,
                 nodesPerPage,
+                filter,
             );
             this.nodes = result.entries;
             this.totalNodes = result.total;
diff --git a/frontend/src/utils/Api.ts b/frontend/src/utils/Api.ts
index 2e437a2..2c67969 100644
--- a/frontend/src/utils/Api.ts
+++ b/frontend/src/utils/Api.ts
@@ -1,5 +1,4 @@
-import type {TypeGuard} from "@/types/shared";
-import {toIsArray} from "@/types/shared";
+import {toIsArray, type TypeGuard} from "@/types";
 import type {Headers} from "request";
 import {parseInteger} from "@/utils/Numbers";
 
@@ -63,10 +62,12 @@ class Api {
         isT: TypeGuard<T>,
         page: number,
         itemsPerPage: number,
+        filter?: object,
     ): Promise<PagedListResult<T>> {
         const response = await this.doGet(path, toIsArray(isT), {
             _page: page,
             _perPage: itemsPerPage,
+            ...filter,
         });
         const totalStr = response.headers.get("x-total-count");
         const total = parseInteger(totalStr, 10);
diff --git a/frontend/src/views/AdminNodesView.vue b/frontend/src/views/AdminNodesView.vue
index 3043a67..9162071 100644
--- a/frontend/src/views/AdminNodesView.vue
+++ b/frontend/src/views/AdminNodesView.vue
@@ -1,12 +1,18 @@
 <script setup lang="ts">
 import {useNodesStore} from "@/stores/nodes";
 import {onMounted, ref} from "vue";
-import type {EnhancedNode, MAC} from "@/types";
+import type {EnhancedNode, MAC, NodesFilter} from "@/types";
 import Pager from "@/components/Pager.vue";
 import LoadingContainer from "@/components/LoadingContainer.vue";
 
 const NODE_PER_PAGE = 50;
 
+interface Props {
+    filter: NodesFilter;
+}
+
+const props = defineProps<Props>();
+
 type NodeRedactField = "nickname" | "email" | "token";
 type NodeRedactFieldsMap = Partial<Record<NodeRedactField, boolean>>;
 
@@ -21,7 +27,7 @@ async function refresh(page: number): Promise<void> {
     loading.value = true;
     redactAllFields(true);
     try {
-        await nodes.refresh(page, NODE_PER_PAGE);
+        await nodes.refresh(page, NODE_PER_PAGE, props.filter);
     } finally {
         loading.value = false;
     }
diff --git a/server/types/shared.ts b/server/types/shared.ts
index 5ed7eca..4b61d15 100644
--- a/server/types/shared.ts
+++ b/server/types/shared.ts
@@ -23,6 +23,14 @@ export function isString(arg: unknown): arg is string {
     return typeof arg === "string"
 }
 
+export function isNumber(arg: unknown): arg is number {
+    return typeof arg === "number"
+}
+
+export function isBoolean(arg: unknown): arg is boolean {
+    return typeof arg === "boolean"
+}
+
 export function toIsArray<T>(isT: TypeGuard<T>): TypeGuard<T[]> {
     return (arg): arg is T[] => isArray(arg, isT);
 }
@@ -31,6 +39,10 @@ export function toIsEnum<E>(enumDef: E): TypeGuard<E> {
     return (arg): arg is E => Object.values(enumDef).includes(arg as [keyof E]);
 }
 
+export function isOptional<T>(arg: unknown, isT: TypeGuard<T>): arg is (T | undefined) {
+    return arg === undefined || isT(arg);
+}
+
 export type Version = string;
 
 // Should be good enough for now.
@@ -51,14 +63,13 @@ export function isNodeStatistics(arg: unknown): arg is NodeStatistics {
         return false;
     }
     const stats = arg as NodeStatistics;
-    // noinspection SuspiciousTypeOfGuard
     return (
-        typeof stats.registered === "number" &&
-        typeof stats.withVPN === "number" &&
-        typeof stats.withCoords === "number" &&
-        typeof stats.monitoring === "object" &&
-        typeof stats.monitoring.active === "number" &&
-        typeof stats.monitoring.pending === "number"
+        isNumber(stats.registered) &&
+        isNumber(stats.withVPN) &&
+        isNumber(stats.withCoords) &&
+        isObject(stats.monitoring) &&
+        isNumber(stats.monitoring.active) &&
+        isNumber(stats.monitoring.pending)
     );
 }
 
@@ -85,11 +96,10 @@ export function isCommunityConfig(arg: unknown): arg is CommunityConfig {
         return false;
     }
     const cfg = arg as CommunityConfig;
-    // noinspection SuspiciousTypeOfGuard
     return (
-        typeof cfg.name === "string" &&
-        typeof cfg.domain === "string" &&
-        typeof cfg.contactEmail === "string" &&
+        isString(cfg.name) &&
+        isString(cfg.domain) &&
+        isString(cfg.contactEmail) &&
         isArray(cfg.sites, isString) &&
         isArray(cfg.domains, isString)
     );
@@ -107,10 +117,9 @@ export function isLegalConfig(arg: unknown): arg is LegalConfig {
         return false;
     }
     const cfg = arg as LegalConfig;
-    // noinspection SuspiciousTypeOfGuard
     return (
-        (cfg.privacyUrl === undefined || typeof cfg.privacyUrl === "string") &&
-        (cfg.imprintUrl === undefined || typeof cfg.imprintUrl === "string")
+        isOptional(cfg.privacyUrl, isString) &&
+        isOptional(cfg.imprintUrl, isString)
     );
 }
 
@@ -125,8 +134,7 @@ export function isClientMapConfig(arg: unknown): arg is ClientMapConfig {
         return false;
     }
     const cfg = arg as ClientMapConfig;
-    // noinspection SuspiciousTypeOfGuard
-    return typeof cfg.mapUrl === "string";
+    return isString(cfg.mapUrl);
 }
 
 export class MonitoringConfig {
@@ -140,8 +148,7 @@ export function isMonitoringConfig(arg: unknown): arg is MonitoringConfig {
         return false;
     }
     const cfg = arg as MonitoringConfig;
-    // noinspection SuspiciousTypeOfGuard
-    return typeof cfg.enabled === "boolean";
+    return isBoolean(cfg.enabled);
 }
 
 export class Coords {
@@ -156,10 +163,9 @@ export function isCoords(arg: unknown): arg is Coords {
         return false;
     }
     const coords = arg as Coords;
-    // noinspection SuspiciousTypeOfGuard
     return (
-        typeof coords.lat === "number" &&
-        typeof coords.lng === "number"
+        isNumber(coords.lat) &&
+        isNumber(coords.lng)
     );
 }
 
@@ -177,11 +183,10 @@ export function isCoordsSelectorConfig(arg: unknown): arg is CoordsSelectorConfi
         return false;
     }
     const cfg = arg as CoordsSelectorConfig;
-    // noinspection SuspiciousTypeOfGuard
     return (
-        typeof cfg.lat === "number" &&
-        typeof cfg.lng === "number" &&
-        typeof cfg.defaultZoom === "number" &&
+        isNumber(cfg.lat) &&
+        isNumber(cfg.lng) &&
+        isNumber(cfg.defaultZoom) &&
         isObject(cfg.layers) // TODO: Better types!
     );
 }
@@ -199,10 +204,9 @@ export function isOtherCommunityInfoConfig(arg: unknown): arg is OtherCommunityI
         return false;
     }
     const cfg = arg as OtherCommunityInfoConfig;
-    // noinspection SuspiciousTypeOfGuard
     return (
-        typeof cfg.showInfo === "boolean" &&
-        typeof cfg.showBorderForDebugging === "boolean" &&
+        isBoolean(cfg.showInfo) &&
+        isBoolean(cfg.showBorderForDebugging) &&
         isArray(cfg.localCommunityPolygon, isCoords)
     );
 }
@@ -225,7 +229,6 @@ export function isClientConfig(arg: unknown): arg is ClientConfig {
         return false;
     }
     const cfg = arg as ClientConfig;
-    // noinspection SuspiciousTypeOfGuard
     return (
         isCommunityConfig(cfg.community) &&
         isLegalConfig(cfg.legal) &&
@@ -233,7 +236,7 @@ export function isClientConfig(arg: unknown): arg is ClientConfig {
         isMonitoringConfig(cfg.monitoring) &&
         isCoordsSelectorConfig(cfg.coordsSelector) &&
         isOtherCommunityInfoConfig(cfg.otherCommunityInfo) &&
-        typeof cfg.rootPath === "string"
+        isString(cfg.rootPath)
     );
 }
 
@@ -281,19 +284,18 @@ export function isNode(arg: unknown): arg is Node {
         return false;
     }
     const node = arg as Node;
-    // noinspection SuspiciousTypeOfGuard
     return (
         isToken(node.token) &&
-        typeof node.nickname === "string" &&
-        typeof node.email === "string" &&
-        typeof node.hostname === "string" &&
-        (node.coords === undefined || typeof node.coords === "string") &&
-        (node.key === undefined || isFastdKey(node.key)) &&
+        isString(node.nickname) &&
+        isString(node.email) &&
+        isString(node.hostname) &&
+        isOptional(node.coords, isString) &&
+        isOptional(node.key, isFastdKey) &&
         isMAC(node.mac) &&
-        typeof node.monitoring === "boolean" &&
-        typeof node.monitoringConfirmed === "boolean" &&
+        isBoolean(node.monitoring) &&
+        isBoolean(node.monitoringConfirmed) &&
         isMonitoringState(node.monitoringState) &&
-        typeof node.modifiedAt === "number"
+        isNumber(node.modifiedAt)
     );
 }
 
@@ -321,8 +323,26 @@ export function isEnhancedNode(arg: unknown): arg is EnhancedNode {
     }
     const node = arg as EnhancedNode;
     return (
-        (node.site === undefined || isSite(node.site)) &&
-        (node.domain === undefined || isDomain(node.domain)) &&
-        (node.onlineState === undefined || isOnlineState(node.onlineState))
+        isOptional(node.site, isSite) &&
+        isOptional(node.domain, isDomain) &&
+        isOptional(node.onlineState, isOnlineState)
+    );
+}
+
+export interface NodesFilter {
+    hasKey?: boolean;
+    hasCoords?: boolean;
+    monitoringState?: MonitoringState;
+}
+
+export function isNodesFilter(arg: unknown): arg is NodesFilter {
+    if (!isObject(arg)) {
+        return false;
+    }
+    const filter = arg as NodesFilter;
+    return (
+        isOptional(filter.hasKey, isBoolean) &&
+        isOptional(filter.hasCoords, isBoolean) &&
+        isOptional(filter.monitoringState, isMonitoringState)
     );
 }