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  1. #1
    Newbie ASBTECH's Avatar
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    Default How to Create VLANs on Transparent Bridge Mode?

    Hello to all!!

    Even when I know IT IS NOT RECOMMENDED, and I have read several old threads from several years ago, I want to know how you recommend to create VLANs in Untangle Transparent Bridge Mode?

    In my country it is very common companies to install aDSL Internet circuits running through ISP's Huawei HG8000 Series Routers, which are not very easy to configure into bridge mode in order to work as Modems, so we can configure Untangle as the network router. So far, we have been configuring Untangle on Bridge mode, but we need to create VLANs in Untangle to separate the different network traffic, which is not possible at the ISP's Huawei routers.

    Can you please bring me some lights on how you recommend we create the required VLANs in Untangle?

    Maybe with the new Untangle software releases you may have created a suggested way to perform such task.

    Thank you in advanced for your appreciated help.

    Regards,

  2. #2
    Untangle Ninja sky-knight's Avatar
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    Default

    The short answer is... you can't. Or rather, it's really logically silly to attempt it because it's just hard to troubleshoot.

    Untangle as a router doesn't have to do NAT, double NAT is the problem. So assuming your ISP router has any mechanism to do static or dynamic routing, I find it's easier to deploy Untangle as a router, disable the NAT checkbox on External, and setup a static route in the ISP gateway for my networks beyond Untangle relative to the ISP router.

    Now I have 1 place to do port forwarding (ISP router).
    NAT is only happening once (ISP router).
    I get easy VLAN termination and aggregation (Untangle Router).
    I get full visibility on all network sessions on both routers.

    And I never got into the layer 2 black magic with no logging that is trying to get VLANs to terminate on an interface without an IP address, and then be rebuilt on the addressed bridged interface to move onward to the next router up that has to be configured to receive the tagged packets. And if anything in that mess isn't right, packets "just don't flow". Screw that, I need to keep what's left of my hair on my head!
    Rob Sandling, BS:SWE, MCP
    NexgenAppliances.com
    Phone: 866-794-8879 x201
    Email: support@nexgenappliances.com

  3. #3
    Newbie ASBTECH's Avatar
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    Default

    Thank you Sky-Night for your detailed reply.

    Question:
    Once Untangle is configured in Bridge mode, the only way to configure it in router mode is reinstalling it or is it possible to move into Router mode?

    Thank you in advance for your answer.

    Regards.

  4. #4
    Untangle Ninja sky-knight's Avatar
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    Let me answer that in a little more complex way than simply, "yes".

    There is no such thing as "router mode" or "bridge mode".

    That selector during install simply configures Internal.

    Bridge Mode says Internal is bridged to External.

    Router Mode says Internal is static, and has DHCP enabled.

    That's it...

    So you're free to simply reconfigure Internal, and watch it work. And as you add more interfaces to Untangle it's important to understand that relationship. Because you can mix and match bridge and router as needed to do all sorts of crazy things.

    So again it's not a mode, just relationships between interfaces.
    Last edited by sky-knight; 04-02-2021 at 04:39 PM.
    skearton likes this.
    Rob Sandling, BS:SWE, MCP
    NexgenAppliances.com
    Phone: 866-794-8879 x201
    Email: support@nexgenappliances.com

  5. #5
    Untangler jcoffin's Avatar
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  6. #6
    Newbie ASBTECH's Avatar
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    Default

    Perfect!!

    I have work to do, and will keep you both (Sky-Nigh and JCoffin) posted on my results. Hoping this thread may help others in the future.

    Regards!

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