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Author Topic: Public LAN, Private VLAN, SNAT  (Read 5894 times)

timeshell

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Public LAN, Private VLAN, SNAT
« on: February 07, 2014, 09:09:59 AM »
DSR-250N Hardware Version A2 Firmware 1.08B44_WW

Greetings.  I need help regarding what should really be a fairly simple configuration.  I have purchased the DSR-250N because of its multi-routed VLAN capabilities.

I have a WAN connection using DSL.
I have a public /29 subnet on my default LAN.
I have a private /24 subnet on my VLAN2.

Below is how I'm trying to route traffic.

LAN -> Routed (NO NAT) -> WAN
VLAN2 -> Routed (NAT) -> WAN
LAN -> Routed (NO NAT) -> VLAN2
VLAN2 -> Routed (NO NAT) -> LAN

I have the Routing Mode configured to Classical Routing so that no NAT is performed by default.
I have a SNAT firewall configured for VLAN2 to hide behind the WAN IF IP.

The main problem is, the VLAN2 traffic isn't getting working outbound to WAN in this configuration.  If I set Routing Mode to NAT, all the traffic goes out, but my LAN is now also NAT'd and doesn't route correctly.

This is the configuration I previously used in OpenWRT on my 14 year old Linksys WRT54GS which has worked for years.  Unfortunately, that router died a week ago.  Seeing how the DSR-250N was advertised to do multi-VLAN routing and is a business router, I assumed it shouldn't have any issues doing a simple configuration like this.

Please help.
« Last Edit: February 08, 2014, 10:25:17 AM by timeshell »
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FurryNutz

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Re: Public LAN, Private VLAN, SNAT
« Reply #1 on: February 07, 2014, 09:15:06 AM »
Link>Welcome!

  • What Hardware version is your router? Look at sticker under router.
  • Link>What Firmware version is currently loaded? Found on the routers web page under status.
  • What region are you located?

Is there any information in the User Manual. I have no experience with this unit yet however I would recommend that you phone contact D-Link support and they should be able to help you configure it to work correctly for you.
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timeshell

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Re: Public LAN, Private VLAN, SNAT
« Reply #2 on: February 07, 2014, 11:22:48 AM »
DSR-250N Hardware Version A2 Firmware 1.08B44_WW
« Last Edit: February 08, 2014, 10:24:42 AM by timeshell »
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FurryNutz

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Re: Public LAN, Private VLAN, SNAT
« Reply #3 on: February 20, 2014, 07:46:59 AM »
Any status on this?  ???
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Cable: 1Gb/50Mb>NetGear CM1200>DIR-882>HP 24pt Gb Switch. COVR-1202/2202/3902,DIR-2660/80,3xDGL-4500s,DIR-LX1870,857,835,827,815,890L,880L,868L,836L,810L,685,657,3x655s,645,628,601,DNR-202L,DNS-345,DCS-933L,936L,960L and 8000LH.