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Bridged Mode: Cant ping wan

Complete Noob here trying to get started. To this point I've done the following:

My goal setup is as follows:

WAN->router->utm->internal network. utm is running in microsoft hyper-v.

Configured a bridged interface as follows:

2. Added the following firewall rules:

internal(network)->any->any allow

any->any->internal(network) allow (added this rule to troubleshoot).

3. Went to firewall->ICMP and enabled all ping related settings.

Yet with all this having been done, I cannot ping a WAN ip(8.8.8.8) from both the gateway and a host. Both cases return ICMP host unreachable.

I am however able to ping the utm itself and get a response.

My questions are as follows:

1. Given that I've essentially eliminated the firewall, why cant I reach the WAN.

2. I suspect the icmp issues may be due to the fact that bridge mode doesnt support icmp forwarding?? Is this the case?



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Top Replies

  • Figured it out. It turns out that when you setup the utm as a transparent bridge on Microsoft Hyper-V you must enable Mac spoofing on both member nics of the bridged interface as shown on the screenshot below:

    I've seen this question on lots of threads with no resolution so hopefully it helps someone. And now to get some sleep(It is 4am right now).

    Jump to answer
  • Figured it out. It turns out that when you setup the utm as a transparent bridge on Microsoft Hyper-V you must enable Mac spoofing on both member nics of the bridged interface as shown on the screenshot below:

    I've seen this question on lots of threads with no resolution so hopefully it helps someone. And now to get some sleep(It is 4am right now).

  • Kia ora Teererai and welcome to the UTM Community!

    Great job in your first post here - thanks for your contribution!

    Cheers - Bob

     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA