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Dual Wan out one wan back in the other

Posted: Wed Oct 31, 2012 3:53 pm
by whoknew
hi,

I have a dual wan setup, I am needing to have my data users go out one WAN and come back in the other WAN. How do I accomplish this?

Re: Dual Wan out one wan back in the other

Posted: Wed Oct 31, 2012 7:58 pm
by whoknew
been trying at this all afternoon, still no progress.. Anyone done this, where you allow clients to be nat'd out one wan link and be able to come back into the other Wan link?

Dual Wan out one wan back in the other

Posted: Wed Oct 31, 2012 8:51 pm
by cbrown
Are you trying to upload out one WAN and download in another?

You can't do that.

Re: Dual Wan out one wan back in the other

Posted: Thu Nov 01, 2012 1:07 am
by Ivoshiee
Are you trying to upload out one WAN and download in another?

You can't do that.
Why not? I've tested that years back with Linux and even on the MT - it is working just fine.
Just have the default gateway to point one ISP gateway and perform source NAT (not a plain masquerade rule) for your internal network with second ISP address. Packets will be sent out according to default gw and answers will come back from second WAN connection, because of the different source.

It may prove interesting for some network snooper to see only traffic going one direction....

Re: Dual Wan out one wan back in the other

Posted: Thu Nov 01, 2012 2:40 am
by whoknew
Not trying to download/upload, more so go out WAN1 and come back in WAN2 to access a web gui of something that is on WAN2.

Dual Wan out one wan back in the other

Posted: Thu Nov 01, 2012 2:51 am
by cbrown
It sounds like you may need hairpin nat setup. Without having more info on your setup and even a diagram this is just a guess.

http://wiki.mikrotik.com/wiki/Hairpin_NAT