54D-Link DIR-615+ User Manual
Section 4 - Conguration
L2TP (cont)
Miscellaneous
NAT: Toggle this switch to enable Network Address Translation (NAT). This 
setting is enabled by default.
Firewall: Toggle this switch to enable rewall functionality. This setting is 
enabled by default.
RIP: Toggle this switch to enable Routing Information Protocol (RIP). This 
setting is disabled by default.
Ping: Toggle this switch to enable WAN Ping. This setting is disabled by 
default.
Isolate 
connection:
Toggle this switch to enable connection isolation. This setting is 
disabled by default.
Click Apply when you are done.