Hi Guys,
finnaly i got the big Problem solved
In 99% all router user with problems have got this problem.
And its quite simple to solve.
You have to configure your TCP and ICMP aging in you Masqudaring options and set them higher than default.
Defaults are about 10-20 seconds. You can try to set the up to 3600. Sound be no problem for you server..
Please report if this could sove your problem.
Rough Element