PPTP Server with Multiple WAN

RouterOS General
1

Hi,

I’m curious to know if it is possible to route traffic back on the interface that it came from?
In my case it would be PPTP clients connecting both to my shaped and unshaped WAN IP addresses.

My problem is that I already have static routes, a transparent proxy and route marking on my Intel x86 box with ROS v5.2.
I think my problem is that my connection & packet marking is interfering with my route-marking rules to route the traffic back via the incoming interface.
Currently the client would connect to like 3.3.3.3 (pppoe-unshaped), but then RouterOS would send the traffic back on ppppoe-national interface, but it still performs NAT for 3.3.3.3 on the packets. A simplified network diagram is attached.

If it would be of use, I can post screenshots + exported parts of how my shaping, route marking & interfaces looks.

Another sort of unrelated problem that I have is that I wanted to route all the national traffic using route marking, but then the transparent proxy rule pretty much destroys it. I wanted to change the static routes to route marking, because 600+ routes in the main routing table is a bit crazy AND most likely has a performance disadvantage compared to route marking from a single address list with 600+ subnets?

Thanks in advance,
Chris
Multiple-WAN with shaping and servers.png

2

Think this might help. If you have a look at PCC example in WIKI the connection coming in from WAN is marked and then this mark is used on the output to insure data is routed out on the wan it came from.

3

Thanks.

I have tried the setup like in http://wiki.mikrotik.com/wiki/Manual:PCC , but I think my traffic shaping rules (which uses connection & packet marking) messes it up.

I’ll try it again some time this week without my shaping rules.