A have a Cisco router 1811. All clients are connected to the internet through it. I want redirected all packages from 1811 to ASG. Cisco uses for this purpose the protocol WCCP. How to configure cisco I know, but how to configure ASG?
If I understand correctly (I've never used it and it's been several years since I've done any configuring on a Cisco), WCCP is used to distribute traffic to multiple caching devices. It's unlcear to me why it would be used in an environment where ALL traffic should go to one device. It's also not clear how this would be desirable in a stand-alone small business implementation that the Cisco 1811 is for.
That's why I asked what problem you are trying to solve. The Astaro is not a Cisco device and doesn't implement Cicsco's WCCP approach, so, in order to help, we need to undersxtand what problem you're trying to solve.