Hi > Thank you very much, > But, what I want to found is the the > source code of native IPsec in Linux kernel 2.6, not the kernel components > (i.e. KLIPS) of Frees/wan or Openswan. Could you please give me some hints > about the former? > Thanks again. http://www.kernelhq.cc/browse.py?css=taichi seems to be it. install the kernel source code and peek into/grep the net directory regards Rahul Sundaram