Setup L2TP / IPSec VPN on Windows Server 2016

Following tutorial shows how to setup Windows Server 2016 (single NIC, behind NAT/Firewall) as a L2TP / IPSec VPN Server.

Install Remote Access Role

• Open Server Manager > Manage > Add Roles and Features and add Remote Access role.
• On Role Services screen choose only DirectAccess and VPN (RAS).
  

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Setup L2TP / IPSec VPN Server on SonicWALL Firewall

This tutorial is for setting up L2TP / IPSec VPN server on SonicWALL TZ300 with Firmware version 6.5. This should work for majority of other SonicWALL firewalls as well.

• Switch to Classic Navigation Mode if not already in Classic Mode (hamburger icon in bottom left).
• Go to VPN > Settings and Enable WAN GroupVPN.
  
  

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Add second VLAN on Netgear GD724T Switch

This simple setup allows to split one Netgear GD724T 24 port switch into two 12 port VLANs so that it can serve 2 independent network segments / subsets.

• Login to the Netgear switch management web interface.
• Go to Switching > VLAN > Basic > VLAN Configuration
  • Create a new VLAN with Name and ID of your choice (i.e. Name: LAN-2 ID: 10).
    
  • Go to Switching > VLAN > Advanced > VLAN Membership
    

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Cannot delete legacy mailbox on Exchange 2010 - Access is Denied

Issue

Some mailboxes on Microsoft Exchange 2010 cannot be deleted via Exchange Management Console. Following error is displayed:

Active Directory operation failed on <domain controller>. This error is not retriable. Additional information: Access is Denied. Active directory response: 00000005: SecErr: DSID-033520B4, problem 4003 (INSUFF_ACCESS_RIGHTS), data 0

The affected mailboxes seem to be those that were moved during Exchange Upgrades from Exchange 2003 > 2007 > 2010.

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