Thank you very much for the answer.
Before I test this solitions a few questions:
1. Does 10.1.2.0/24 mean 0. 0, 0. 0/0???
2. As for IP range, my internal network is /24 network. When connected wit vpn, the client receives /32 ip address. How is it then possible to have the same range, since dialup vpn does not offer it actually?
3. I know where to setup a policy, but where do you setup a nat policy on ssg? Or what is the difference between those in ssg setup?
Thank you in advance! Will test your solution today evening or tomorrow.