Planet Enterprise WiFi System User Manual page 41

Enable PPTP pass
through on VPN
connection
Enable L2TP pass
through on VPN
connection
Set TTL value
After changing the configuration setting, please click the "Apply Changes" button to
complete the new configuration setting. Otherwise, click the "Reset" button to abort
change and recover the previous configuration setting.
PPPoE
Click the checkbox to enable PPTP packet pass through
Click the checkbox to enable L2TP packet pass through
Click to Enable and set Time to Live value.
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