Dark lord have right, L2Divine is only walker who can;t be detect in l2dexternet.
For those who don't like fair play, some haking tools for l2 dex 
Third party progam, more complex then clasic l2walker, up to 8 caracters loaded, settings for l2dex whit ong undetectable by l2 dex anti-hack shield.

A guide book for newbies who don't know how to use it.

For l2 DEX go settings/config and set:
Profile : Private
LoginServerIP : 85.186.68.138
LoginServerPort : 2106
ProtocolVersion : 656
Server Name : Dexternet/Wrath/Arion
If you intend use it on other l2 server change setings acording to l2Divine guide book. Good luck!