雨果

今天要對公司其中一台網域主控站主機做硬體維護，但這台機器是 AD 中的 FSMO 五大角色，所以想先將 FSMO 五大角色轉移後再關機維護，我隱隱約約之中感覺這主題我之前好像有寫過 (這篇文章)，但卻無法直覺的找到該文章，所以為了讓日後更容易搜索到文章，決定寫一篇專文介紹轉移的過程，也順便重新複習一遍轉移五大角色的過程。

FSMO (Flexible Single Master Operations) 五大角色分別為：

      當在 Windows Server 2008 R2 上安裝 Active Directory 服務後，重新啓動服務器會收到類似“WinRM 服務無法創建以下 SPN: /WSMAN/DC.contoso.com; WSMAN/DC。”的警告！來自於系統日誌，事件來源：Windows Remote Management，事件ID：10154。具體的錯誤信息如下圖所示。

症狀
The System event log of a system running Windows contains NETLOGON warning 5782, with the following description:

依據訊息說明，您的信箱可能被對方加入黑名單中，聯絡寄件者的 IT 人員，將您的信箱加入信任清單後，再測試看看。

備份：
netsh dhcp server export d:\backup\dhcp.txt all

With the increasing threats to network security and privacy, bolstering servers with competent security mechanisms becomes very important. A VPN allows you to establish a private network that can be used to tunnel the data from a local computer to a remote server. In this tutorial, we will be configuring a VPN server in Windows Server 2022 which will help you make your processes much more available and secure.

In this tutorial, we will be leveraging Remote and Remote Access Services (RRAS) to configure a VPN server. RRAS offers a seamless and easy-to-use interface to set up networking features such as VPN, NAT, Dial-Up Access server, Lan Routing, etc.

Error Message：
此次環境當中，實體伺服器為 IBM xServer x3650 在新增記憶體之後，開機時卻顯示如下記憶體錯誤訊息？

From Cisco Switches / Firewall (ASA) / Switches:

To see the arp table:

A software-defined wide area network (SD-WAN) is a network that is abstracted from its hardware, creating a virtualized network overlay. It is an application of software-defined networking (SDN). SD-WAN is an automated, programmable wide-area network that dynamically and securely routes traffic based on applications policies, network conditions, or WAN circuit priority. Through a centralized interface, a cloud-delivered SD-WAN architecture allows companies to scale cloud-based applications across thousands of endpoints in the branch, campus, or SaaS and public cloud applications at distance.