Allied Telesis AT-WR4500 manual PPPoE, L2TP Setup for Windows, ToInternet 1500, Office 1500

170	AT-WR4500 Series - IEEE 802.11abgh Outdoor Wireless Routers
	RouterOS v3 Configuration and User Guide

Finally, the proxy APR must be enabled on the 'Office' interface:

[admin@RemoteOffice] interface ethernet> set Office arp=proxy-arp

[admin@RemoteOffice] interface ethernet> print

Flags:		X - disabled, R - running
#		NAME	MTU	MAC-ADDRESS	ARP
0	R	ToInternet	1500	00:30:4F:0B:7B:C1	enabled
1	R	Office	1500	00:30:4F:06:62:12	proxy-arp

[admin@RemoteOffice] interface ethernet>

L2TP Setup for Windows

Microsoft provides L2TP client support for Windows XP, 2000, NT4, ME and 98. Windows 2000 and XP include support in the Windows setup or automatically install L2TP. For 98, NT and ME, installation requires a download from Microsoft (L2TP/IPsec VPN Client).

For more information, see:

Microsoft L2TP/IPsec VPN Client Microsoft L2TP/IPsec VPN Client On Windows 2000, L2TP setup without IPsec requires editing registry:

Disabling IPsec for the Windows 2000 Client

Disabling IPSEC Policy Used with L2TP

8.5.7 Troubleshooting

Description

I use firewall and I cannot establish L2TP connection

Make sure UDP connections can pass through both directions between your sites.

My Windows L2TP/IPsec VPN Client fails to connect to L2TP server with "Error 789" or "Error 781"

The error messages 789 and 781 occur when IPsec is not configured properly on both ends. See the respective documentation on how to configure IPsec in the Microsoft L2TP/IPsec VPN Client and in the RouterOS. If you do not want to use IPsec, it can be easily switched off on the client side.

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If you are using Windows 2000, you need to edit system registry using regedt32.exe or regedit.exe. Add the following registry value to HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Rasman\Parameters:

Value Name: ProhibitIpSec

Data Type: REG_DWORD

Value: 1

You must restart the Windows 2000 for the changes to take effect

8.6PPPoE

8.6.1General Information

Summary

The PPPoE (Point to Point Protocol over Ethernet) protocol provides extensive user management, network management and accounting benefits to ISPs and network administrators. Currently PPPoE is used mainly by ISPs to control client connections for xDSL and cable modems as well as plain Ethernet networks. PPPoE is an extension of the standard Point to Point Protocol (PPP). The difference between them is expressed in transport method: PPPoE employs Ethernet instead of modem connection.