TMS zl Module Planning and Implementation Guide 2009-08

Table Of Contents
Page 119
Next we will configure the IPsec Proposal. Because we are using Windows
clients, we will need to select Transport Mode. Be sure to use ESP as the
“Security Protocol!”
Because we have our VPN clients using Layer 2 Tunneling Protocol (L2TP)
over IPsec, our IPSec traffic selector will utilize UDP and the L2TP port is
1701. The local address is the “real” IP address of the TMS zl Module, not the
Virtual one.