I figured out what was wrong with forwarding - I had DMZ enabled and needed to insert rules, not just append them. But now there is another problem:
I have 2 routers, one set's the asus in DMZ, so all ports are available to asus. Some PC's are connected to the first router, some to asus. The problem is, that pcs from the other router are able to access my website on the router, but when I try to access it from another host (using ssh and lynx) it fails.