Rockwell Automation 1756-EN2TSC EtherNet/IP Secure Communication User Manual - Manual (Page 39)

Rockwell Automation Publication ENET-UM003B-EN-P - September 2013 39
Configure a Secure Connection to a Microsoft Windows Client Chapter 3
16. On the Security tab, do the following.
a. Choose Layer 2 Tunneling Protocol with IPsec (L2TP/IPsec) as the
type of VPN.
b. Choose Optional encryption (connect even if no encryption) as the
type of data encryption.
c. Click Allow these protocols.
d. Check Unencrypted password (PAP).
e. Check Challenge Handshake Authentication Protocol (CHAP).
f. Clear the Microsoft CHAP version 2 (MS-CHAP v2) checkbox.
17. On the Security tab, click Advanced Settings and enter the pre-shared key.
The pre-shared key must be same as defined for the mobile client as part of
configuring the 1756-EN2TSC module (page
29 ).
IMPORTANT This setting means that the L2TP configuration does not enforce
encryption, but there still is IPsec encryption.