ZyXEL Communications ZyWall USG 50-H Series User Manual page 377

Figure 296 Connect L2TP to ZyWALL: Security
11 Select Optional encryption (connect even if no encryption) and the Allow these
protocols radio button. Select Unencrypted password (PAP) and clear all of the other
check boxes. Click OK.
Figure 297 Connect ZyWALL L2TP: Security > Advanced
12 Click IPSec Settings.
ZyWALL USG 50-H User's Guide
Chapter 25 L2TP VPN Example
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