2026年にOyster VPNを使ってオンラインプライバシーを保護する方法

クイックスタート

このガイドでは、OysterVPNのすべての機能について解説します。

• はじめる —アカウントを作成し、OysterVPNをインストールしてください。
• AES 256ビット暗号化の使用方法 — Locks your traffic behind 256-bit AES so nobody on the network can read it
• ゼロログポリシーの使用方法 — Keeps no record of what you browse while connected
• DDoS攻撃対策の使い方 — Masks your home IP so gamers and streamers cannot be knocked offline
• セキュアプロトコルの使用方法 — Lets you pick WireGuard, OpenVPN, IKEv2, L2TP/IPsec, or PPTP
• IP漏洩防止機能の使い方 — Blocks IP, DNS, WebRTC, and IPv6 leaks that expose your real address
• 広告ブロッカーの使い方 — Cuts ads and trackers at the network level for faster page loads
• 複数ログインの使用方法 — Protects up to 5 devices simultaneously on a single account
• P2P最適化サーバーの使い方 — Allows torrenting across the whole network, not a handful of nodes
• インターネットキルスイッチの使い方 — Blocks all traffic the moment the tunnel fails
• スプリットトンネルの使い方 — Routes chosen apps through the VPN and leaves the rest direct

所要時間： 各作品につき5分

このガイドには以下の内容も含まれています。 プロのヒント | よくある間違い | トラブルシューティング | 価格 | 代替案

このガイドを信頼する理由

I have run OysterVPN on Windows, Android, and iOS for six months and tested every toggle in this guide. Screenshots and results come from my own account, not press material.

OysterVPN is a small provider with 152 servers in 18 countries.

That is a tiny footprint next to most VPNs on the market.

But it still packs advanced security features into a cheap subscription.

Every one of the OysterVPN features below sits inside the paid apps.

このガイドでは、Oysterの使い方を説明します。 VPN properly, feature by feature.

OysterVPNチュートリアル

This How to Use Oyster VPN tutorial walks through installing OysterVPN, connecting for the first time, and switching on the security features that actually matter.

オイスターVPN

Cover 5 devices simultaneously with 256-bit AES encryption, a kill switch, and split tunneling. Plans start at $5.99 per month with a 30-day money-back guarantee.

今すぐOYSTERVPNをお試しください →

レビュー全文を読む →

OYSTERVPNの代替サービス →

OysterVPNの始め方

Installing OysterVPN takes under 10 minutes from signup to first connection.

ステップ1：アカウントを作成する

Go to the OysterVPN site and pick a plan.

Pay by credit or debit card, since 暗号 is not accepted.

✓ チェックポイント: チェックしてください 受信トレイ 確認メールについて。

ステップ2：アプリをダウンロードする

Grab the installer from the official download page or your app store.

There are apps for Windows, Android, and iOS, but none for macOS or Linux.

The mobile apps install fast, and the iOS app feels steadier than the rest of the OysterVPN apps.

They do not carry the same features as the desktop builds, so check both.

Here is what my own setup looked like:

✓ チェックポイント: The dashboard loads with a server list and a connect button.

ステップ3：初回接続

Sign in, choose the Smart Location option, and press connect.

The tunnel opens in a few seconds.

OysterVPNのAES 256ビット暗号化の使い方

AES 256ビット暗号化 lets you scramble every packet you send with bank-grade 256-bit AES encryption.

Step 1: Open the App and Sign In

Launch OysterVPN on Windows, Android, or iOS.

Enter the email and password you used at signup.

Step 2: Pick a Server

The server list sits on the left side of the app.

これは以下のようなものです。

✓ チェックポイント: The country name and a new IP appear at the top of the app.

Step 3: Hit Connect

Press the big connect button and wait a few seconds.

OysterVPNのログなしポリシーの使い方

ゼロログポリシー lets you use the VPN without your browsing history being recorded or stored.

ステップ1：設定を開く

Tap the gear icon in the top corner of the app.

Step 2: Read the Privacy Page

Open the privacy link and read the no logs policy in full.

これは以下のようなものです。

✓ チェックポイント: Diagnostics show as disabled in the privacy menu.

Step 3: Switch Off Diagnostics

Turn off crash reports so no extra data leaves your device.

How to Use OysterVPN DDoS Protector

DDoS防御 lets you hide your real IP address so attackers cannot flood your connection.

Step 1: Connect Before You Play

Start the VPN before you open your game or ストリーミングソフトウェア.

Step 2: Check Your New IP

Search for what is my IP in the browser and compare it.

これは以下のようなものです。

✓ チェックポイント: The IP shown online no longer matches your real one.

Step 3: Lock the Server In

Save that server to your favorite servers list for next time.

OysterVPNのセキュアプロトコルの使い方

安全なプロトコル lets you switch between secure VPN protocols to balance speed and stability.

ステップ1：プロトコル設定を開く

Go to Settings and find the protocol menu.

Step 2: Select WireGuard

WireGuard gives the best mix of speed and stability here.

これは以下のようなものです。

✓ チェックポイント: The active protocol name shows on the main screen.

Step 3: Reconnect

Disconnect and reconnect so the new protocol takes effect.

How to Use OysterVPN IP Leak Protector

IP漏洩保護 lets you stop your real IP address escaping through DNS, WebRTC, or IPv6.

Step 1: Connect First

Pick any server and wait for the connected status.

Step 2: Run a Leak Test

Open the IP leak test on the OysterVPN site.

これは以下のようなものです。

✓ チェックポイント: No DNS entry from your own provider appears in the report.

Step 3: Compare the Results

Your displayed IP should differ from your real one.

OysterVPN広告ブロッカーの使い方

広告ブロッカー lets you strip ads and trackers out of pages before they load in your browser.

Step 1: Open the Features Menu

Find the ad-blocker toggle in the app settings.

Step 2: Turn It On

Flip the switch and confirm the prompt.

これは以下のようなものです。

✓ チェックポイント: Pages load with fewer banners and finish faster.

Step 3: Reload a Page

Refresh a news site and watch the banners disappear.

OysterVPNの複数ログイン機能の使い方

複数ログイン lets you cover five devices simultaneously on one subscription.

ステップ1：各デバイスにダウンロードする

Grab the app from the official download page or the app stores.

Step 2: Sign In Everywhere

Use the same account details on each install.

これは以下のようなものです。

✓ チェックポイント: Every device shows a connected status at the same time.

Step 3: Track Your Slots

Stop at five, or one device gets dropped.

OysterVPNのP2P最適化サーバーの使い方

P2P最適化サーバー lets you torrent on any server without hunting for a special P2P location.

Step 1: Connect to a Close Country

Torrenting is allowed on all of OysterVPN’s servers.

Distance hurts transfer speed more than anything else.

Step 2: Confirm the Link Is Live

Check the timer counting up on the main screen.

これは以下のようなものです。

✓ チェックポイント: Your client shows the server IP, not your home one.

Step 3: Start Your Client

Open your torrent client only after the tunnel is up.

OysterVPNのインターネットキルスイッチの使い方

インターネットキルスイッチ lets you cut your internet instantly if the VPN connection drops.

ステップ1：詳細設定を開く

Scroll to the security section of the desktop app.

ステップ2：キルスイッチを有効にする

Toggle it on before you connect, not after.

これは以下のようなものです。

✓ チェックポイント: Web pages stop loading the second the tunnel closes.

Step 3: Test It

Disconnect manually and watch your browser lose access.

OysterVPNのスプリットトンネル機能の使い方

分割トンネル工法 lets you send some apps through the tunnel while others use your normal connection.

Step 1: Find Split Tunneling

Open the split tunneling feature inside the settings menu.

Step 2: Choose Your Apps

Tick the apps that should skip the tunnel.

これは以下のようなものです。

✓ チェックポイント: Excluded apps still show your local IP address.

Step 3: Save and Reconnect

Apply the list, then reconnect for it to bite.

OysterVPNのプロ向けヒントとショートカット

Six months of daily use taught me a few shortcuts worth knowing.

キーボードショートカット

ほとんどの人が見逃す隠れた機能

• Favorite servers: Star any location so it pins to the top of the list.
• Perfect forward secrecy: Keys rotate per session, so future data stays sealed if one key leaks.
• Router setup: Manual configuration works on Asus, DD-WRT, and Tomato routers.

Putting the VPN on your router covers smart TVs and consoles that have no app of their own.

Every device on the network is then protected without extra setup.

Does OysterVPN work in restrictive countries? Switch to OpenVPN there, since it slips past more firewalls.

Here are the benefits I lean on most:

OysterVPNでよくある間違いを避ける方法

Mistake #1: Trusting the Marketing Claims

Mistake #2: Skipping the Kill Switch

Mistake #3: Expecting Every Platform to Unblock

OysterVPNのトラブルシューティング

Problem: A site will not load properly

原因： The server IP is flagged, so the site properly blocks the request.

修理： Switch to another city, clear cookies, and reload the page.

Problem: Stuck on a security check

原因： A firewall check shows verification successful waiting for the site to respond.

修理： Note the Ray ID on screen, disconnect, then reconnect to a different server.

Problem: Speeds crawl on the Windows app

原因： The Windows app has bugs, and distant servers make it worse.

修理： Switch to WireGuard, pick the closest country, and restart the app.

📌 注記： If none of these help, the 24/7 live chat carries OysterVPN customer support, since email support is weak.

OysterVPNとは何ですか？

オイスターVPN is a budget VPN that encrypts your internet traffic and hides your IP address.

Think of it like a private lane on a public motorway.

Is OysterVPN safe? The encryption and leak blocking hold up well in testing.

OysterVPN offers monthly, yearly, and lifetime plans under the same refund window.

こちらの簡単な概要をご覧ください。

主な機能は以下のとおりです。

• AES 256ビット暗号化： Industry-standard 256-bit AES that hides your browsing from your ISP and public Wi-Fi snoops
• ログなしポリシー： A strict no logs policy backed by an Irish base, outside the 5/9/14-Eyes Alliance
• DDoS攻撃対策： IP masking that keeps your home address out of reach during ゲーム and live streams
• 安全なプロトコル: Secure VPN protocols including OpenVPN, IKEv2, L2TP/IPsec, and PPTP
• IP漏洩保護： Leak protection covering IP, DNS, WebRTC, and IPv6 requests
• 広告ブロッカー: A built-in blocker that filters ads and trackers across every app
• 複数ログイン： Up to 5 devices simultaneously on one plan, tested across phones and laptops
• P2P最適化サーバー： Torrent-friendly servers across the entire network
• インターネットキルスイッチ: A kill switch that blocks internet traffic if the VPN connection drops
• 分割トンネル工法： Split tunneling that lets banking apps skip the tunnel while streaming stays protected

詳細については、こちらをご覧ください。 OysterVPNレビュー.

OysterVPNの価格設定

Here is what OysterVPN costs in 2026:

無料トライアル: No free plan and no free trial.

返金保証: Yes, 30 days on every plan.

💰 最もお得な価格: Lifetime Access — one payment, and no renewal date to track.

OysterVPNと代替サービスの比較

How does OysterVPN compare against the top competitors?

おすすめ商品：

• 総合ベスト： NordVPN — the fastest server speeds and a real audit trail.
• ベスト予算： OysterVPN — strong security for the price of a coffee.
• 初心者におすすめ： ExpressVPN — the most intuitive apps in the category.
• Best for more devices: Surfshark VPN — unlimited logins on one account.

🎯 OysterVPNの代替品

Looking for OysterVPN alternatives? Here are the options worth a look:

• 🚀 ノルドVPN: 6,000+ servers, audited no logs policy, and the fastest server speeds in the category.
• 🌟 エクスプレスVPN: 105 countries, flawless streaming access, and the most polished apps on the market.
• ⭐ ピュアVPN: 6,500+ servers with dedicated IP add-ons and solid port forwarding for torrents.
• 💰 Surfshark VPN: Unlimited device connections on one account, which beats the 5-device cap here.
• 🔒 プロトンVPN: Swiss privacy law, open-source apps, and a genuinely usable free plan.
• 👶 プライベートVPN: Simple apps and a free tier that suits light users testing the waters.
• 🎯 アドガードVPN: Built by an ad-blocking company, so filtering and browser extensions are strong.
• 💼 仮想シールド: Family-focused plans with parental controls layered on top of the tunnel.
• 🔧 強力なVPN: Reliable OpenVPN performance and easy manual setup guides for routers.
• ⚡ 最速VPN: Very cheap lifetime deals with 10 device connections included.
• 🏢 Aura VPN: Bundled with identity theft protection and credit monitoring.
• 📊 サイバーゴースト： 11,000+ servers with dedicated streaming and gaming profiles.
• 🧠 マカフィーVPN: Ships inside McAfee antivirus, so one subscription covers both.
• 🔥 プライベートインターネットアクセス: Open-source apps, court-proven no logs record, and heavy customisation.
• 🎨 ミステリウムVPN: Decentralised peer-to-peer network with pay-as-you-go crypto billing.
• 🚀 SafeShell VPN: Streaming-first design aimed at unlocking regional catalogues quickly.

全リストについては、こちらをご覧ください。 OysterVPNの代替サービス ガイド。

⚔️ OysterVPNの比較

Here is how OysterVPN stacks up head to head:

• OysterVPN vs NordVPN: NordVPN wins on server count, audits, and speed. OysterVPN only wins on price.
• OysterVPN vs ExpressVPN： ExpressVPN unblocks more platforms and costs far more. OysterVPN suits tight budgets.
• OysterVPN vs PureVPN： PureVPN offers a bigger network and more add-ons at a similar yearly price.
• OysterVPN vs Surfshark VPN: Surfshark allows unlimited devices. OysterVPN stops at five simultaneous logins.
• OysterVPN vs ProtonVPN: ProtonVPN is independently audited and free to try. OysterVPN has neither.
• OysterVPN 対 PrivadoVPN: PrivadoVPN gives you a free plan first. OysterVPN asks for payment upfront.
• OysterVPNとAdGuard VPNの比較: AdGuard has real browser extensions. OysterVPN still lists them as coming soon.
• OysterVPN vs. Virtual Shield: Virtual Shield targets families. OysterVPN is a leaner single-user tool.
• OysterVPN 対 StrongVPN: StrongVPN has better router documentation. OysterVPN matches it on encryption.
• OysterVPN 対 FastestVPN: FastestVPN undercuts almost everyone on lifetime pricing, including OysterVPN.
• OysterVPN vs Aura VPN: Aura sells a whole security suite. OysterVPN sells one focused product.
• OysterVPN 対 Cyber​​Ghost: CyberGhost has a far bigger network and unblocks more streaming services.
• OysterVPNとMcAfee VPNの比較: McAfee bundles antivirus. OysterVPN gives sharper protocol control.
• OysterVPNとPrivate Internet Accessの比較: PIA has a proven logging record in court. OysterVPN has no audit at all.
• OysterVPN vs Mysterium VPN: Mysterium accepts crypto. OysterVPN takes credit and debit cards only.
• OysterVPN vs SafeShell VPN: SafeShell chases streaming libraries. OysterVPN covers broader security ground.

今すぐOysterVPNを使い始めましょう

You now know how to use every major OysterVPN feature:

• ✅ AES 256ビット暗号化
• ✅ ログを一切記録しないポリシー
• ✅ DDoS攻撃対策
• ✅ 安全なプロトコル
• ✅ IP漏洩保護
• ✅ 広告ブロッカー
• ✅ 複数ログイン
• ✅ P2P最適化サーバー
• ✅ インターネットキルスイッチ
• ✅ 分割トンネル

次のステップ： Pick one feature and try it today.

Most people start with the kill switch.

5分もかかりません。

よくある質問

インストール後、VPNを使用する方法は？

Open the app, sign in, pick a nearby server, and press connect. Wait a few seconds for the status to turn green, then browse as normal.

Oyster VPNは無料ですか？

No. OysterVPN has no free plan and no free trial. Paid plans start at $5.99 per month and carry a 30-day money-back guarantee instead.

旅行中にVPNを使用する方法は？

Install it before you leave. Abroad, connect to a home-country server for banking, and use a local server for faster speeds on everyday browsing.

VPN初心者向けの使い方とは？

Download the app, sign in, and tap connect. Leave the default protocol alone at first. Turn on the kill switch once you are comfortable.

Oyster VPNは良いサービスですか？

It is a decent VPN with strong encryption and fair pricing. But a small server network, buggy apps, and no independent audit hold it back.