[nsp] Pix + Tunnel IPSec

[Roberto Paoletti]

Hi all, 
 
Is it possibile that when i use the tunnel ipsec between a vpn client
(ver 1.1 on Windows) and outside of the pix (ver 6.3.1 and DES enable),
after a few time the system failed, i seen that the vpn client sending
the KEY for  KEY-EXCHANGE ISAKMP , but it doesn't received the response.
In this case i check the configuration, but i don't see mistakes , then
i think a error hardware but the pix doesn't output error or critical
messages,and ni'd like use the VAC(VPN ACCELERATOR CARD).
 
The system RAS(3Com) + ACS (Windows 200 Server) and pix 525 i use for
vpn client dynamic.
 
Can someone help me?
 
Thanks
Regards
Roberto Paoletti