1.Fix security problem about Web login without user name and password.

2.Fix the problem about using static DHCP together with MAC filter.

3.Modify Dial-on-Demand option.

4.Add Syslog function on DI-604.

5.Add WAN IP into intrusion log message.
(EX. Unrecognized attempt blocked from 192.168.122.1:1529 to 192.168.122.98 TCP:21)