Initial config - no traffic

Hi guys,

Fresh install.

 here is my topology (Hyper-V).

 Internal ( -----------------------UTM-------------External (router)-----------Internet

 UTM Interfaces:

External (WAN)
on eth1

Added by installation wizard

on eth0
MTU 1500
Auto-created on installation

 There is no traffic going through the UTM. I can ping it and web access it from a LAN PC, however, there is no traffic going through it. The traffic is not hitting the UTM, I even enabled traceroute/icmp on UTM and tried tracert and it times out with *.

When I check the traffic monitor (internal in), I can see pings when I ping, however, there is no info when I try to ping the Internet or web access anything (DNS fails stragith away).

 Am I missing something obvious? The DG on the PC points to but no traffic.

  • please post the output from "route print".

    looks like your traffic try to go other ways...

    are you able to ping from UTM? (support -> tools -> Ping check)


  • In reply to dirkkotte:

    I can ping the Internet from the UTM, no problem.

    PING ( 56(84) bytes of data.

    64 bytes from icmp_seq=1 ttl=121 time=72.1 ms

    64 bytes from icmp_seq=2 ttl=121 time=81.0 ms

    64 bytes from icmp_seq=3 ttl=121 time=55.5 ms

    64 bytes from icmp_seq=4 ttl=121 time=94.0 ms

    64 bytes from icmp_seq=5 ttl=121 time=83.0 ms


    The problem is that from a local PC (192.168.88.x) - I can web access the UTM and ping it, but when I try to access antything else, seems that UTM ignores all that traffic. I tried from a physical laptop - the same problem - I can web access the UTM but anything that is supposed to go through the UTM - does not reach it or gets dropped.


    it literally behaves like there was an incorrect default gateway on the PC.


    I did configure it as on PCs.

  • In reply to Mmm M:

    try route print ...

    seen incorrect static routes (or routes learned by ICMP-redirect) already.

    Also a router configured with proxy-arp may by the cause.

    You may use ssh to the UTM an check incomming traffic with tcpdump

  • In reply to dirkkotte:

    You mean a routing table on the PC? I did check that, it looks good:

    IPv4 Route Table
    Active Routes:
    Network Destination        Netmask          Gateway       Interface  Metric
           On-link    331
           On-link    331         On-link    331         On-link    281         On-link    281         On-link    281
           On-link    331
           On-link    281         On-link    331         On-link    281
    Persistent Routes:
      Network Address          Netmask  Gateway Address  Metric


    Proxy-arp... There is no router on, I did that on purpose to make sure this is a unique subnet.

    Whats more - I can https to the UTM from that PC no problems :/

  • In reply to Mmm M:

    Looks like a Hyper-V issue... installed with VirtualBox.