diff --git a/README.md b/README.md
index d93a77d57..dc0192ec4 100644
--- a/README.md
+++ b/README.md
@@ -32,6 +32,10 @@
 
 ## 細かい変更点
 
+- サーバー設定の初期値を変更
+  - 新規登録を無効化
+  - サーバーメトリクスの表示を有効化
+  - ランダムなアイコンの生成を無効化
 - 身バレ防止の設定を追加
   - 「おかえりなさい、◯◯さん」が出ないようにできるように
   - 自分のアイコンを非表示にできるように
diff --git a/packages/backend/migration/1000000000000-Init.js b/packages/backend/migration/1000000000000-Init.js
index bab5fae7a..4d6b16026 100644
--- a/packages/backend/migration/1000000000000-Init.js
+++ b/packages/backend/migration/1000000000000-Init.js
@@ -220,7 +220,7 @@ export class Init1000000000000 {
 			`CREATE INDEX "IDX_3c601b70a1066d2c8b517094cb" ON "notification" ("notifieeId") `,
 		);
 		await queryRunner.query(
-			`CREATE TABLE "meta" ("id" character varying(32) NOT NULL, "name" character varying(128), "description" character varying(1024), "maintainerName" character varying(128), "maintainerEmail" character varying(128), "announcements" jsonb NOT NULL DEFAULT '[]', "disableRegistration" boolean NOT NULL DEFAULT false, "disableLocalTimeline" boolean NOT NULL DEFAULT false, "disableGlobalTimeline" boolean NOT NULL DEFAULT false, "enableEmojiReaction" boolean NOT NULL DEFAULT true, "useStarForReactionFallback" boolean NOT NULL DEFAULT false, "langs" character varying(64) array NOT NULL DEFAULT '{}'::varchar[], "hiddenTags" character varying(256) array NOT NULL DEFAULT '{}'::varchar[], "blockedHosts" character varying(256) array NOT NULL DEFAULT '{}'::varchar[], "mascotImageUrl" character varying(512) DEFAULT '/static-assets/badges/info.png', "bannerUrl" character varying(512), "errorImageUrl" character varying(512) DEFAULT '/static-assets/badges/error.png', "iconUrl" character varying(512), "cacheRemoteFiles" boolean NOT NULL DEFAULT false, "proxyAccount" character varying(128), "enableRecaptcha" boolean NOT NULL DEFAULT false, "recaptchaSiteKey" character varying(64), "recaptchaSecretKey" character varying(64), "localDriveCapacityMb" integer NOT NULL DEFAULT 1024, "remoteDriveCapacityMb" integer NOT NULL DEFAULT 32, "maxNoteTextLength" integer NOT NULL DEFAULT 500, "summalyProxy" character varying(128), "enableEmail" boolean NOT NULL DEFAULT false, "email" character varying(128), "smtpSecure" boolean NOT NULL DEFAULT false, "smtpHost" character varying(128), "smtpPort" integer, "smtpUser" character varying(128), "smtpPass" character varying(128), "enableServiceWorker" boolean NOT NULL DEFAULT false, "swPublicKey" character varying(128), "swPrivateKey" character varying(128), "enableTwitterIntegration" boolean NOT NULL DEFAULT false, "twitterConsumerKey" character varying(128), "twitterConsumerSecret" character varying(128), "enableGithubIntegration" boolean NOT NULL DEFAULT false, "githubClientId" character varying(128), "githubClientSecret" character varying(128), "enableDiscordIntegration" boolean NOT NULL DEFAULT false, "discordClientId" character varying(128), "discordClientSecret" character varying(128), CONSTRAINT "PK_c4c17a6c2bd7651338b60fc590b" PRIMARY KEY ("id"))`,
+			`CREATE TABLE "meta" ("id" character varying(32) NOT NULL, "name" character varying(128), "description" character varying(1024), "maintainerName" character varying(128), "maintainerEmail" character varying(128), "announcements" jsonb NOT NULL DEFAULT '[]', "disableRegistration" boolean NOT NULL DEFAULT true, "disableLocalTimeline" boolean NOT NULL DEFAULT false, "disableGlobalTimeline" boolean NOT NULL DEFAULT false, "enableEmojiReaction" boolean NOT NULL DEFAULT true, "useStarForReactionFallback" boolean NOT NULL DEFAULT false, "langs" character varying(64) array NOT NULL DEFAULT '{}'::varchar[], "hiddenTags" character varying(256) array NOT NULL DEFAULT '{}'::varchar[], "blockedHosts" character varying(256) array NOT NULL DEFAULT '{}'::varchar[], "mascotImageUrl" character varying(512) DEFAULT '/static-assets/badges/info.png', "bannerUrl" character varying(512), "errorImageUrl" character varying(512) DEFAULT '/static-assets/badges/error.png', "iconUrl" character varying(512), "cacheRemoteFiles" boolean NOT NULL DEFAULT false, "proxyAccount" character varying(128), "enableRecaptcha" boolean NOT NULL DEFAULT false, "recaptchaSiteKey" character varying(64), "recaptchaSecretKey" character varying(64), "localDriveCapacityMb" integer NOT NULL DEFAULT 1024, "remoteDriveCapacityMb" integer NOT NULL DEFAULT 32, "maxNoteTextLength" integer NOT NULL DEFAULT 500, "summalyProxy" character varying(128), "enableEmail" boolean NOT NULL DEFAULT false, "email" character varying(128), "smtpSecure" boolean NOT NULL DEFAULT false, "smtpHost" character varying(128), "smtpPort" integer, "smtpUser" character varying(128), "smtpPass" character varying(128), "enableServiceWorker" boolean NOT NULL DEFAULT false, "swPublicKey" character varying(128), "swPrivateKey" character varying(128), "enableTwitterIntegration" boolean NOT NULL DEFAULT false, "twitterConsumerKey" character varying(128), "twitterConsumerSecret" character varying(128), "enableGithubIntegration" boolean NOT NULL DEFAULT false, "githubClientId" character varying(128), "githubClientSecret" character varying(128), "enableDiscordIntegration" boolean NOT NULL DEFAULT false, "discordClientId" character varying(128), "discordClientSecret" character varying(128), CONSTRAINT "PK_c4c17a6c2bd7651338b60fc590b" PRIMARY KEY ("id"))`,
 		);
 		await queryRunner.query(
 			`CREATE TABLE "following" ("id" character varying(32) NOT NULL, "createdAt" TIMESTAMP WITH TIME ZONE NOT NULL, "followeeId" character varying(32) NOT NULL, "followerId" character varying(32) NOT NULL, "followerHost" character varying(128), "followerInbox" character varying(512), "followerSharedInbox" character varying(512), "followeeHost" character varying(128), "followeeInbox" character varying(512), "followeeSharedInbox" character varying(512), CONSTRAINT "PK_c76c6e044bdf76ecf8bfb82a645" PRIMARY KEY ("id"))`,
diff --git a/packages/backend/migration/1688280713783-add-meta-options.js b/packages/backend/migration/1688280713783-add-meta-options.js
index e97a95c42..9e68b3e4a 100644
--- a/packages/backend/migration/1688280713783-add-meta-options.js
+++ b/packages/backend/migration/1688280713783-add-meta-options.js
@@ -3,10 +3,10 @@ export class AddMetaOptions1688280713783 {
 
 	async up(queryRunner) {
 		await queryRunner.query(
-			`ALTER TABLE "meta" ADD "enableServerMachineStats" boolean NOT NULL DEFAULT false`,
+			`ALTER TABLE "meta" ADD "enableServerMachineStats" boolean NOT NULL DEFAULT true`,
 		);
 		await queryRunner.query(
-			`ALTER TABLE "meta" ADD "enableIdenticonGeneration" boolean NOT NULL DEFAULT true`,
+			`ALTER TABLE "meta" ADD "enableIdenticonGeneration" boolean NOT NULL DEFAULT false`,
 		);
 	}
 
diff --git a/packages/backend/src/models/entities/meta.ts b/packages/backend/src/models/entities/meta.ts
index 9fbe30449..794aae4fe 100644
--- a/packages/backend/src/models/entities/meta.ts
+++ b/packages/backend/src/models/entities/meta.ts
@@ -42,7 +42,7 @@ export class Meta {
 	public maintainerEmail: string | null;
 
 	@Column("boolean", {
-		default: false,
+		default: true,
 	})
 	public disableRegistration: boolean;
 
@@ -548,12 +548,12 @@ export class Meta {
 	public experimentalFeatures: Record<string, unknown>;
 
 	@Column("boolean", {
-		default: false,
+		default: true,
 	})
 	public enableServerMachineStats: boolean;
 
 	@Column("boolean", {
-		default: true,
+		default: false,
 	})
 	public enableIdenticonGeneration: boolean;