記載著 Will 在網路世界的學習心得與技術分享 https://blog.miniasp.com/ http://www.rssboard.org/rss-specification BlogEngine.NET 3.3.7.0 zh-TW https://blog.miniasp.com/opml.axd https://blog.miniasp.com/syndication.axd Will Huang The Will Will Web 24.567110 120.970500 <p>10 月 23 日下午，我收到一封標題為「【TWNIC資安提醒】PHP 出現嚴重漏洞，請儘快更新 / Security Alert: Critical PHP Vulnerabilities, Please Update Now」的通知信。內容談的是 PHP 剛發布的兩個高風險漏洞，時機點很合理，但 Outlook 網頁版在寄件者旁邊跳出警示，說無法驗證這封信是否真的來自該寄件者。</p><p>... <a class="more" href="https://blog.miniasp.com/post/2026/10/24/outlook-unverified-sender-spf-dmarc-alignment#continue">繼續閱讀</a> ...</p> https://blog.miniasp.com/post/2026/10/24/outlook-unverified-sender-spf-dmarc-alignment [email protected] https://blog.miniasp.com/post/2026/10/24/outlook-unverified-sender-spf-dmarc-alignment#comment https://blog.miniasp.com/post.aspx?id=3ced9141-23c4-4d46-9da4-382088a0e718 週六, 24 十月 2026 00:35:00 +0000 Security Office 365 SPF DKIM DMARC Outlook Microsoft 365 Email will https://blog.miniasp.com/pingback.axd https://blog.miniasp.com/post.aspx?id=3ced9141-23c4-4d46-9da4-382088a0e718 https://blog.miniasp.com/trackback.axd?id=3ced9141-23c4-4d46-9da4-382088a0e718 https://blog.miniasp.com/post/2026/10/24/outlook-unverified-sender-spf-dmarc-alignment#comment https://blog.miniasp.com/syndication.axd?post=3ced9141-23c4-4d46-9da4-382088a0e718 <p>最近我替公司內部的會議錄音與轉錄網站加入 MCP，讓 Claude Code、Codex 這類 AI 工具可以查詢我自己的會議、逐字稿、摘要與筆記。網站已經有 Microsoft Entra ID 登入與使用者白名單，我希望沿用現有認證，不要為了 MCP 再建立一套帳號，也不要新增 Entra ID 的 App registration。</p><p>... <a class="more" href="https://blog.miniasp.com/post/2026/10/23/mcp-entra-oauth-dynamic-registration#continue">繼續閱讀</a> ...</p> https://blog.miniasp.com/post/2026/10/23/mcp-entra-oauth-dynamic-registration [email protected] https://blog.miniasp.com/post/2026/10/23/mcp-entra-oauth-dynamic-registration#comment https://blog.miniasp.com/post.aspx?id=7c38a352-9f40-4376-902d-e7f5fd8eb92f 週五, 23 十月 2026 12:46:52 +0000 AI Microsoft Azure Security MCP OAuth Microsoft Entra ID Azure Functions Codex Claude Code PKCE will https://blog.miniasp.com/pingback.axd https://blog.miniasp.com/post.aspx?id=7c38a352-9f40-4376-902d-e7f5fd8eb92f https://blog.miniasp.com/trackback.axd?id=7c38a352-9f40-4376-902d-e7f5fd8eb92f https://blog.miniasp.com/post/2026/10/23/mcp-entra-oauth-dynamic-registration#comment https://blog.miniasp.com/syndication.axd?post=7c38a352-9f40-4376-902d-e7f5fd8eb92f <p>我經常有一個需求，就是需要把我上課所需要的簡報轉成 PDF，還要加入防寫保護的密碼(限制編輯、防止篡改內容)。但是這個需求以前我在 Windows 的時候，有一個好用的 PDF-XChange 軟體，可以很方便地幫我修改文件屬性，還可以很快地設定密碼。但是到了 macOS 之後，我發現沒有好用的工具可以用。因此，我最近就自己寫了一套全新的 CLI 工具來做這件事。</p><p>... <a class="more" href="https://blog.miniasp.com/post/2026/10/17/generate-write-protected-pdf-using-cli#continue">繼續閱讀</a> ...</p> https://blog.miniasp.com/post/2026/10/17/generate-write-protected-pdf-using-cli [email protected] https://blog.miniasp.com/post/2026/10/17/generate-write-protected-pdf-using-cli#comment https://blog.miniasp.com/post.aspx?id=b6112ada-54b0-47da-a2d3-f7544d0b7fb8 週五, 16 十月 2026 16:33:00 +0000 Tips Security PDF CLI pdf-encrypt Security Rust will https://blog.miniasp.com/pingback.axd https://blog.miniasp.com/post.aspx?id=b6112ada-54b0-47da-a2d3-f7544d0b7fb8 https://blog.miniasp.com/trackback.axd?id=b6112ada-54b0-47da-a2d3-f7544d0b7fb8 https://blog.miniasp.com/post/2026/10/17/generate-write-protected-pdf-using-cli#comment https://blog.miniasp.com/syndication.axd?post=b6112ada-54b0-47da-a2d3-f7544d0b7fb8 <p>最近有個需求，要讓一台電腦上的排程程式，每天自動把產出的檔案上傳到公司 Teams 頻道的「檔案」裡面，讓團隊成員可以直接在 Teams 取用。這種每天定時執行的工作，當然不能靠人工登入，也不適合把某個人的帳號密碼寫進設定檔。</p><p>... <a class="more" href="https://blog.miniasp.com/post/2026/10/06/entra-app-certificate-sharepoint-teams-folder-access#continue">繼續閱讀</a> ...</p> https://blog.miniasp.com/post/2026/10/06/entra-app-certificate-sharepoint-teams-folder-access [email protected] https://blog.miniasp.com/post/2026/10/06/entra-app-certificate-sharepoint-teams-folder-access#comment https://blog.miniasp.com/post.aspx?id=46b7d020-34a0-4c29-9fbc-41d3d9535adc 週二, 6 十月 2026 17:36:46 +0000 Microsoft Azure Office 365 Security Microsoft Entra ID Microsoft Graph SharePoint Teams OpenSSL PowerShell certificate will https://blog.miniasp.com/pingback.axd https://blog.miniasp.com/post.aspx?id=46b7d020-34a0-4c29-9fbc-41d3d9535adc https://blog.miniasp.com/trackback.axd?id=46b7d020-34a0-4c29-9fbc-41d3d9535adc https://blog.miniasp.com/post/2026/10/06/entra-app-certificate-sharepoint-teams-folder-access#comment https://blog.miniasp.com/syndication.axd?post=46b7d020-34a0-4c29-9fbc-41d3d9535adc <p>今天有客戶希望我們重新提供給他們一次 PFX 憑證檔案，所以我寫了一支批次檔專門用來匯出先前的 PFX 金鑰，並且再重新將 TWCA 簽發的 <code>server.cer</code> 憑證搭配原始金鑰再匯出一份新的 PFX 金鑰與設定強式密碼給他們。這篇文章我就來分享今天撰寫的腳本。</p><p>... <a class="more" href="https://blog.miniasp.com/post/2025/09/18/Sharing-batch-script-for-export-PFX-private-key-and-repackage-it-into-a-new-PFX#continue">繼續閱讀</a> ...</p> https://blog.miniasp.com/post/2025/09/18/Sharing-batch-script-for-export-PFX-private-key-and-repackage-it-into-a-new-PFX [email protected] https://blog.miniasp.com/post/2025/09/18/Sharing-batch-script-for-export-PFX-private-key-and-repackage-it-into-a-new-PFX#comment https://blog.miniasp.com/post.aspx?id=1fab9696-eccc-4bb5-8f82-393258352cad 週四, 18 九月 2025 15:54:00 +0000 Security Windows tls certificate ssl pfx will https://blog.miniasp.com/pingback.axd https://blog.miniasp.com/post.aspx?id=1fab9696-eccc-4bb5-8f82-393258352cad https://blog.miniasp.com/trackback.axd?id=1fab9696-eccc-4bb5-8f82-393258352cad https://blog.miniasp.com/post/2025/09/18/Sharing-batch-script-for-export-PFX-private-key-and-repackage-it-into-a-new-PFX#comment https://blog.miniasp.com/syndication.axd?post=1fab9696-eccc-4bb5-8f82-393258352cad <p>我最近都在準備 <a href="https://www.accupass.com/go/e2e-playwright">實戰 E2E 測試：使用 Playwright 測試框架</a> 課程，也為這堂課特別精心翻譯了整個 <a href="https://playwright.dev/">playwright.dev</a> 網站，甚至還買了一個 <a href="https://playwright.tw/">playwright.tw</a> 域名，並把翻譯好的網站部署到 GitHub Pages 上面。<a href="https://pages.github.com/">GitHub Pages</a> 是 GitHub 提供的免費靜態網頁服務，使用者可以透過 GitHub Pages 建立個人網站、部落格、文件網站等。今天這篇文章我將介紹如何在 GitHub Pages 設定自訂域名與啟用免費的 TLS 憑證。</p><p>... <a class="more" href="https://blog.miniasp.com/post/2024/09/10/How-to-set-up-a-custom-domain-and-enable-free-TLS-certificates-on-GitHub-Pages#continue">繼續閱讀</a> ...</p> https://blog.miniasp.com/post/2024/09/10/How-to-set-up-a-custom-domain-and-enable-free-TLS-certificates-on-GitHub-Pages [email protected] https://blog.miniasp.com/post/2024/09/10/How-to-set-up-a-custom-domain-and-enable-free-TLS-certificates-on-GitHub-Pages#comment https://blog.miniasp.com/post.aspx?id=c6585c3c-16cd-45fd-ae1a-00a97743f022 週二, 10 九月 2024 14:25:00 +0000 Security Tips Web 網路管理 GitHub Pages GitHub tls will https://blog.miniasp.com/pingback.axd https://blog.miniasp.com/post.aspx?id=c6585c3c-16cd-45fd-ae1a-00a97743f022 https://blog.miniasp.com/trackback.axd?id=c6585c3c-16cd-45fd-ae1a-00a97743f022 https://blog.miniasp.com/post/2024/09/10/How-to-set-up-a-custom-domain-and-enable-free-TLS-certificates-on-GitHub-Pages#comment https://blog.miniasp.com/syndication.axd?post=c6585c3c-16cd-45fd-ae1a-00a97743f022 <p>我個人寫過的 PowerShell 腳本可能有數百到上千支，數不清了，由於大部分的腳本都是自己個人使用為主，所以大多都不會特別對這些腳本進行數位簽章。但是對於金融業這種高度管制的企業或組織來說，其實 PowerShell 腳本是被嚴格禁止的，此時對你的 PowerShell 腳本進行數位簽章就顯的十分重要。除此之外，若你要發佈腳本給其他人使用，對腳本進行數位簽章也是一個很好的選擇，不但可以增加可信度，也可以確保腳本的完整性，不會被惡意竄改後重新散佈有問題的版本。這篇文章我將介紹如何對 PowerShell 腳本檔案進行數位簽章。</p><p>... <a class="more" href="https://blog.miniasp.com/post/2024/09/07/How-to-digitally-sign-PowerShell-script-files#continue">繼續閱讀</a> ...</p> https://blog.miniasp.com/post/2024/09/07/How-to-digitally-sign-PowerShell-script-files [email protected] https://blog.miniasp.com/post/2024/09/07/How-to-digitally-sign-PowerShell-script-files#comment https://blog.miniasp.com/post.aspx?id=dd41040d-cff7-4aa5-b85d-13ad148b03e6 週六, 7 九月 2024 03:59:00 +0000 Security Windows 系統管理 PowerShell will https://blog.miniasp.com/pingback.axd https://blog.miniasp.com/post.aspx?id=dd41040d-cff7-4aa5-b85d-13ad148b03e6 https://blog.miniasp.com/trackback.axd?id=dd41040d-cff7-4aa5-b85d-13ad148b03e6 https://blog.miniasp.com/post/2024/09/07/How-to-digitally-sign-PowerShell-script-files#comment https://blog.miniasp.com/syndication.axd?post=dd41040d-cff7-4aa5-b85d-13ad148b03e6 <p>我們公司主要採用 <a href="https://www.microsoft.com/zh-tw/microsoft-365/microsoft-365-enterprise">Microsoft 365</a> (<code>M365</code>) 為主要的協作平台，背後自然使用的是地表最強大的 <a href="https://learn.microsoft.com/en-us/entra/fundamentals/whatis?WT.mc_id=DT-MVP-4015686">Microsoft Entra ID</a> 服務。我們上個月有位同事被 Entra ID 判定有 MFA 異常登入的狀況，導致帳號被鎖定，無法使用 MFA 登入，因此導致他完全無法使用任何 <code>M365</code> 服務。我當時也不知道怎樣處理的，可能是設定讓他重新設定 MFA 之類的，反正他就正常可以登入了。結果過了一個多月，就在前幾天，同一個人，他的帳號又再次被鎖定，這次鎖的更緊了，害我怎樣都解鎖不了，還必須要動用微軟技術支援中心才能解決。這次我還是認真做一下筆記好了，以免日後再有同仁遇到帳號被鎖定的狀況。</p><p>... <a class="more" href="https://blog.miniasp.com/post/2024/04/24/Deal-with-Microsoft-365-User-Account-MFA-Locked#continue">繼續閱讀</a> ...</p> https://blog.miniasp.com/post/2024/04/24/Deal-with-Microsoft-365-User-Account-MFA-Locked [email protected] https://blog.miniasp.com/post/2024/04/24/Deal-with-Microsoft-365-User-Account-MFA-Locked#comment https://blog.miniasp.com/post.aspx?id=f390d580-e8a7-45a5-b7c3-fa233086ebed 週三, 24 四月 2024 15:57:00 +0000 Microsoft Azure Office 365 Security Microsoft 365 Entra ID will https://blog.miniasp.com/pingback.axd https://blog.miniasp.com/post.aspx?id=f390d580-e8a7-45a5-b7c3-fa233086ebed https://blog.miniasp.com/trackback.axd?id=f390d580-e8a7-45a5-b7c3-fa233086ebed https://blog.miniasp.com/post/2024/04/24/Deal-with-Microsoft-365-User-Account-MFA-Locked#comment https://blog.miniasp.com/syndication.axd?post=f390d580-e8a7-45a5-b7c3-fa233086ebed <p>我有個客戶的網站最近剛上線，在設定 CSP (<a href="https://content-security-policy.com/">Content Security Policy</a>) 標頭的時候，因為我設定了 <code>unsafe-inline</code> 的關係，所以導致 Google Analytics (GA) 的程式無法執行，但&nbsp;GA 網站提供的程式碼就是用 Inline Script (內嵌腳本) 怎麼辦呢？這篇文章我就來告訴你解決方案。</p><p>... <a class="more" href="https://blog.miniasp.com/post/2023/12/22/Inline-script-and-CSP-settings-nonce-hash#continue">繼續閱讀</a> ...</p> https://blog.miniasp.com/post/2023/12/22/Inline-script-and-CSP-settings-nonce-hash [email protected] https://blog.miniasp.com/post/2023/12/22/Inline-script-and-CSP-settings-nonce-hash#comment https://blog.miniasp.com/post.aspx?id=41f067b1-b146-48a2-ad49-30be9c154d61 週五, 22 十二月 2023 02:40:00 +0000 ASP.NET Core Security Web Content Security Policy google analytics will https://blog.miniasp.com/pingback.axd https://blog.miniasp.com/post.aspx?id=41f067b1-b146-48a2-ad49-30be9c154d61 https://blog.miniasp.com/trackback.axd?id=41f067b1-b146-48a2-ad49-30be9c154d61 https://blog.miniasp.com/post/2023/12/22/Inline-script-and-CSP-settings-nonce-hash#comment https://blog.miniasp.com/syndication.axd?post=41f067b1-b146-48a2-ad49-30be9c154d61 <p>昨天 (2023/11/20) 晚上 8:19 我經歷了一場歷時 16 小時的驚魂記，因為我的臉書 (Facebook) 帳號被盜了！我之前已經將 Facebook 所有的安全保護機制全部都啟用且設定過，二階段驗證也有啟用，但帳號是還是被盜了，這還是讓我覺得不可思議。還好就在剛剛我經成功把帳號救回來了，所以我想分享一下我這 16 小時的親身經歷，希望能幫助到有遇到同樣問題的人。</p><p>... <a class="more" href="https://blog.miniasp.com/post/2023/11/21/How-to-Recover-Your-Facebook-Account#continue">繼續閱讀</a> ...</p> https://blog.miniasp.com/post/2023/11/21/How-to-Recover-Your-Facebook-Account [email protected] https://blog.miniasp.com/post/2023/11/21/How-to-Recover-Your-Facebook-Account#comment https://blog.miniasp.com/post.aspx?id=95055d86-2942-42b5-a0fd-0644864783d6 週二, 21 十一月 2023 06:21:00 +0000 Security 心得分享 Facebook will https://blog.miniasp.com/pingback.axd https://blog.miniasp.com/post.aspx?id=95055d86-2942-42b5-a0fd-0644864783d6 https://blog.miniasp.com/trackback.axd?id=95055d86-2942-42b5-a0fd-0644864783d6 https://blog.miniasp.com/post/2023/11/21/How-to-Recover-Your-Facebook-Account#comment https://blog.miniasp.com/syndication.axd?post=95055d86-2942-42b5-a0fd-0644864783d6 <p>我記得我最早在 2008 年就因為一個標案串接過 e 政府服務平臺的單一登入機制，事隔多年後，竟然什麼也沒有變，還是一樣透過 SOAP Web Service 來進行驗證。今天這篇文章我就來說說如何透過 .NET 7 實作 e 政府服務平臺的單一簽入機制，以及說明如何用 .NET 呼叫以 SOAP 為基礎的 Web Service 服務。</p><p>... <a class="more" href="https://blog.miniasp.com/post/2023/09/26/How-to-integrate-SSO-with-TW-eGov-using-dotnet#continue">繼續閱讀</a> ...</p> https://blog.miniasp.com/post/2023/09/26/How-to-integrate-SSO-with-TW-eGov-using-dotnet [email protected] https://blog.miniasp.com/post/2023/09/26/How-to-integrate-SSO-with-TW-eGov-using-dotnet#comment https://blog.miniasp.com/post.aspx?id=604f0fae-109e-44dc-a6c9-0d15a59a19f5 週二, 26 九月 2023 14:13:00 +0000 .NET Core Security sso eGov wcf web service will https://blog.miniasp.com/pingback.axd https://blog.miniasp.com/post.aspx?id=604f0fae-109e-44dc-a6c9-0d15a59a19f5 https://blog.miniasp.com/trackback.axd?id=604f0fae-109e-44dc-a6c9-0d15a59a19f5 https://blog.miniasp.com/post/2023/09/26/How-to-integrate-SSO-with-TW-eGov-using-dotnet#comment https://blog.miniasp.com/syndication.axd?post=604f0fae-109e-44dc-a6c9-0d15a59a19f5 <p>前陣子在研究 <a href="https://datatracker.ietf.org/doc/html/rfc6238">TOTP</a> (Time-based One-Time Password) 的實作方式，發現還蠻容易的，這篇文章我就來記錄一下實作的注意事項。</p><p>... <a class="more" href="https://blog.miniasp.com/post/2023/09/04/How-to-implement-TOTP-in-dotNET#continue">繼續閱讀</a> ...</p> https://blog.miniasp.com/post/2023/09/04/How-to-implement-TOTP-in-dotNET [email protected] https://blog.miniasp.com/post/2023/09/04/How-to-implement-TOTP-in-dotNET#comment https://blog.miniasp.com/post.aspx?id=edf1f82e-cf0e-4f2a-bdcf-d1996e13f922 週一, 4 九月 2023 11:16:00 +0000 .NET Core .NET Framework C# Security otp totp QRCode QRCoder otp.net Microsoft Authenticator Google Authenticator will https://blog.miniasp.com/pingback.axd https://blog.miniasp.com/post.aspx?id=edf1f82e-cf0e-4f2a-bdcf-d1996e13f922 https://blog.miniasp.com/trackback.axd?id=edf1f82e-cf0e-4f2a-bdcf-d1996e13f922 https://blog.miniasp.com/post/2023/09/04/How-to-implement-TOTP-in-dotNET#comment https://blog.miniasp.com/syndication.axd?post=edf1f82e-cf0e-4f2a-bdcf-d1996e13f922 <p>由於每一家不同的 OAuth 2.0 Provider 對於 Refresh Token 的核發方法都不盡相同，這篇文章我打算記錄一下 Google OAuth 2.0 發出 Refresh Token 的方法。</p><p>... <a class="more" href="https://blog.miniasp.com/post/2023/06/14/How-to-issue-Refresh-Token-in-Google-OAuth#continue">繼續閱讀</a> ...</p> https://blog.miniasp.com/post/2023/06/14/How-to-issue-Refresh-Token-in-Google-OAuth [email protected] https://blog.miniasp.com/post/2023/06/14/How-to-issue-Refresh-Token-in-Google-OAuth#comment https://blog.miniasp.com/post.aspx?id=74bb0c8a-eca0-4c35-abf9-cdea8bbfadcd 週三, 14 六月 2023 12:19:00 +0000 Security Web OAuth2 Refresh Token google will https://blog.miniasp.com/pingback.axd https://blog.miniasp.com/post.aspx?id=74bb0c8a-eca0-4c35-abf9-cdea8bbfadcd https://blog.miniasp.com/trackback.axd?id=74bb0c8a-eca0-4c35-abf9-cdea8bbfadcd https://blog.miniasp.com/post/2023/06/14/How-to-issue-Refresh-Token-in-Google-OAuth#comment https://blog.miniasp.com/syndication.axd?post=74bb0c8a-eca0-4c35-abf9-cdea8bbfadcd <p>從 ASP.NET Core 7.0 開始，.NET SDK 7 內建支援 <code>dotnet user-jwts</code> 命令，可以幫助你管理開發時期所需的金鑰與 JWT Tokens，我深入的把玩了一下，發現還真的好用，這篇文章我就來說說怎樣使用。</p><p>... <a class="more" href="https://blog.miniasp.com/post/2023/04/28/ASPNET-Core-7-dotnet-user-jwts#continue">繼續閱讀</a> ...</p> https://blog.miniasp.com/post/2023/04/28/ASPNET-Core-7-dotnet-user-jwts [email protected] https://blog.miniasp.com/post/2023/04/28/ASPNET-Core-7-dotnet-user-jwts#comment https://blog.miniasp.com/post.aspx?id=29540acd-a4aa-4875-9a39-ed51ddcb8823 週五, 28 四月 2023 14:55:00 +0000 ASP.NET Core Security ASP.NET Core 7 jwt dotnet user-jwts will https://blog.miniasp.com/pingback.axd https://blog.miniasp.com/post.aspx?id=29540acd-a4aa-4875-9a39-ed51ddcb8823 https://blog.miniasp.com/trackback.axd?id=29540acd-a4aa-4875-9a39-ed51ddcb8823 https://blog.miniasp.com/post/2023/04/28/ASPNET-Core-7-dotnet-user-jwts#comment https://blog.miniasp.com/syndication.axd?post=29540acd-a4aa-4875-9a39-ed51ddcb8823 <p>ASP.NET Core Data Protection 提供了一組加密 API (cryptographic API) 來保護資料安全，其中還自動包含了密鑰管理(key management)與密鑰更換(key rotation)等機制。這套技術主要用來長期取代 .NET Framework 的 ASP.NET 1.x ~ 4.x 中 <code>web.config</code> 定義的 <code>&lt;machineKey&gt;</code> 元素，我研究之後發現這套機制不但簡單好上手，背後的金鑰管理也有一定程度的複雜度，可算是相當不錯的資料保護解決方案。這篇文章我想帶大家快速上手 ASP.NET Core 資料保護機制，並透過一個簡單範例說明他的加解密的用法。</p><p>... <a class="more" href="https://blog.miniasp.com/post/2023/04/27/ASPNET-Core-Data-Protection-Overview#continue">繼續閱讀</a> ...</p> https://blog.miniasp.com/post/2023/04/27/ASPNET-Core-Data-Protection-Overview [email protected] https://blog.miniasp.com/post/2023/04/27/ASPNET-Core-Data-Protection-Overview#comment https://blog.miniasp.com/post.aspx?id=7d58baf1-b672-405f-9c4c-7b2c000ed464 週四, 27 四月 2023 05:05:00 +0000 .NET Core ASP.NET Core Security asp.net core data protection will https://blog.miniasp.com/pingback.axd https://blog.miniasp.com/post.aspx?id=7d58baf1-b672-405f-9c4c-7b2c000ed464 https://blog.miniasp.com/trackback.axd?id=7d58baf1-b672-405f-9c4c-7b2c000ed464 https://blog.miniasp.com/post/2023/04/27/ASPNET-Core-Data-Protection-Overview#comment https://blog.miniasp.com/syndication.axd?post=7d58baf1-b672-405f-9c4c-7b2c000ed464