1、the configuration is correct,the users can go on line normally,so
does the Internet server.
2、recheck the configuration, and detect the address of NAT address pool
and Interface server is similar, so we hesitate the Internet server mask is too
large. After check, ensure the condition. So the packets of the Internet server
cannot be forwarded to NE40.
3、reconfigure the mask of the Internet server
correct the problem is solved.