Hi, I have read the manual and some forum posts on here, but have not been able to find exactly what I need. I hope someone here can help me.

I have a DrayTek V3300 with three lines coming in to it: one SDSL, and two ADSL2+. I want to dedicate the SDSL line to one server only on my internal network, so that all traffic to and from that server travels along the SDSL line, and nothing else.

I have set up port redirection rules to say that traffic coming on the SDSL WAN interface is forwarded to my server, and believe that is working correctly. However I need to make sure that all outbound traffic from my server is directed down the SDSL line. I don't want any traffic from my other servers using this SDSL line.

Could someone give me instructions how to do this please?

Many thanks

If you have 3 different connections then you should have 3 different default gateways - I would have thought setting those on the servers rather than redirection would be a better option?