Iptables DNAT blocking firewall host

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I have a machine where I manage the firewall using UFW. I have setup a few DNAT rules. It works well from the network but not at all from the server itself:



Server IP:



inet 10.0.4.4/23 brd 10.0.5.255 scope global br0


10.0.4.10 in an LXC host running on the same server, networked through a bridged network interface (br0).



/etc/ufw/before.rules:



*nat
:PREROUTING ACCEPT [0:0]

# HTTP
-A PREROUTING -d 10.0.4.4 -p tcp --dport 80 -j DNAT --to 10.0.4.10:80
-A PREROUTING -d 10.0.4.4 -p tcp --dport 443 -j DNAT --to 10.0.4.10:443

COMMIT


I can access the 10.0.4.10 lxc host from the network using the 10.0.4.4 IP, but not from the server itself:



# curl --head http://10.0.4.4
curl: (7) Failed to connect to 10.0.4.4 port 80: Connection refused


But it can access 10.0.4.10 directly:



# curl --head http://10.0.4.10
HTTP/1.1 200 OK


What I have I done wrong ?




iptables nat ufw loopback




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    I have a machine where I manage the firewall using UFW. I have setup a few DNAT rules. It works well from the network but not at all from the server itself:



    Server IP:



    inet 10.0.4.4/23 brd 10.0.5.255 scope global br0


    10.0.4.10 in an LXC host running on the same server, networked through a bridged network interface (br0).



    /etc/ufw/before.rules:



    *nat
    :PREROUTING ACCEPT [0:0]

    # HTTP
    -A PREROUTING -d 10.0.4.4 -p tcp --dport 80 -j DNAT --to 10.0.4.10:80
    -A PREROUTING -d 10.0.4.4 -p tcp --dport 443 -j DNAT --to 10.0.4.10:443

    COMMIT


    I can access the 10.0.4.10 lxc host from the network using the 10.0.4.4 IP, but not from the server itself:



    # curl --head http://10.0.4.4
    curl: (7) Failed to connect to 10.0.4.4 port 80: Connection refused


    But it can access 10.0.4.10 directly:



    # curl --head http://10.0.4.10
    HTTP/1.1 200 OK


    What I have I done wrong ?




    iptables nat ufw loopback




    share|improve this question





















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      up vote
      0
      down vote

      favorite











      I have a machine where I manage the firewall using UFW. I have setup a few DNAT rules. It works well from the network but not at all from the server itself:



      Server IP:



      inet 10.0.4.4/23 brd 10.0.5.255 scope global br0


      10.0.4.10 in an LXC host running on the same server, networked through a bridged network interface (br0).



      /etc/ufw/before.rules:



      *nat
      :PREROUTING ACCEPT [0:0]

      # HTTP
      -A PREROUTING -d 10.0.4.4 -p tcp --dport 80 -j DNAT --to 10.0.4.10:80
      -A PREROUTING -d 10.0.4.4 -p tcp --dport 443 -j DNAT --to 10.0.4.10:443

      COMMIT


      I can access the 10.0.4.10 lxc host from the network using the 10.0.4.4 IP, but not from the server itself:



      # curl --head http://10.0.4.4
      curl: (7) Failed to connect to 10.0.4.4 port 80: Connection refused


      But it can access 10.0.4.10 directly:



      # curl --head http://10.0.4.10
      HTTP/1.1 200 OK


      What I have I done wrong ?




      iptables nat ufw loopback




      share|improve this question











      I have a machine where I manage the firewall using UFW. I have setup a few DNAT rules. It works well from the network but not at all from the server itself:



      Server IP:



      inet 10.0.4.4/23 brd 10.0.5.255 scope global br0


      10.0.4.10 in an LXC host running on the same server, networked through a bridged network interface (br0).



      /etc/ufw/before.rules:



      *nat
      :PREROUTING ACCEPT [0:0]

      # HTTP
      -A PREROUTING -d 10.0.4.4 -p tcp --dport 80 -j DNAT --to 10.0.4.10:80
      -A PREROUTING -d 10.0.4.4 -p tcp --dport 443 -j DNAT --to 10.0.4.10:443

      COMMIT


      I can access the 10.0.4.10 lxc host from the network using the 10.0.4.4 IP, but not from the server itself:



      # curl --head http://10.0.4.4
      curl: (7) Failed to connect to 10.0.4.4 port 80: Connection refused


      But it can access 10.0.4.10 directly:



      # curl --head http://10.0.4.10
      HTTP/1.1 200 OK


      What I have I done wrong ?





      iptables nat ufw loopback





      share|improve this question










      share|improve this question




      share|improve this question









      asked Jun 22 at 3:39









      Laurent

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