Arch Linux

MarthaParkin

Member

Registered: 2016-03-19

Posts: 232

Trouble setting up routes for server/client containers

Following
this but with containers.

I am not sure what I am missing.

I have setup static ip for the internal network on the server and set the client container to point to it but there is still no connection on the client.

Data for the containers

    NAME        STATE   AUTOSTART GROUPS IPV4                   IPV6 
    mitm        RUNNING 0         -      xxx.xxx.xxx.xxx (internet address for eth0 which works), xxx.xxx.3.1 (internal address for eth1) -    
    mitm-client RUNNING 0         -      xxx.xxx.3.10           -    

Dnsmasq is running on the server.

    $ sudo systemctl status dnsmasq
    ● dnsmasq.service - A lightweight DHCP and caching DNS server
       Loaded: loaded (/usr/lib/systemd/system/dnsmasq.service; enabled; vendor preset: disabled)
       Active: active (running) since Tue 2018-04-10 15:58:21 UTC; 1min 23s ago
         Docs: man:dnsmasq(8)
      Process: 83 ExecStartPre=/usr/bin/dnsmasq --test (code=exited, status=0/SUCCESS)
     Main PID: 88 (dnsmasq)
        Tasks: 1 (limit: 4915)
       CGroup: /system.slice/dnsmasq.service
               └─88 /usr/bin/dnsmasq -k --enable-dbus --user=dnsmasq --pid-file

    Apr 10 15:58:21 mitm dnsmasq[83]: dnsmasq: syntax check OK.
    Apr 10 15:58:21 mitm systemd[1]: Started A lightweight DHCP and caching DNS server.
    Apr 10 15:58:21 mitm dnsmasq[88]: started, version 2.79 cachesize 150
    Apr 10 15:58:21 mitm dnsmasq[88]: compile time options: IPv6 GNU-getopt DBus i18n IDN DHCP DH
    Apr 10 15:58:21 mitm dnsmasq[88]: DBus support enabled: connected to system bus
    Apr 10 15:58:21 mitm dnsmasq-dhcp[88]: DHCP, IP range xxx.xxx.x.xxx -- xxx.xxx.x.xxx, lease ti
    Apr 10 15:58:21 mitm dnsmasq[88]: reading /etc/resolv.conf
    Apr 10 15:58:21 mitm dnsmasq[88]: using nameserver 84.200.69.80#53
    Apr 10 15:58:21 mitm dnsmasq[88]: using nameserver 84.200.70.40#53
    Apr 10 15:58:21 mitm dnsmasq[88]: read /etc/hosts - 1 addresses

Route for server

    $ route -n
    Kernel IP routing table
    Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
    0.0.0.0         xxx.xxx.3.1        0.0.0.0         UG    0      0        0 eth0
    0.0.0.0         0.0.0.0         0.0.0.0         U     0      0        0 eth1
    10.0.0.0        0.0.0.0         255.0.0.0       U     0      0        0 eth0
    xxx.xxx.3.0     0.0.0.0         255.255.255.0   U     0      0        0 eth1

Ip route on client

    # ip route
    default via xxx.xxx.3.1 dev eth0 proto static
    xxx.xxx.3.0/24 dev eth0 proto kernel scope link src xxx.xxx.3.10

I start mitmproxy as per the link on the server with `mitmproxy -T --host` but there is still no internet connection on the client when I try ping or wget.

Any ideas what is wrong?

I thought maybe the iptables config was wrong/not present. I am using ufw and added the data in ufw noted in that post and checked it was added to iptables and it was however still no change. The settings also disappeared when I rebooted. I know they do with iptables but I thought they would persist when put in before.rules. Anyhow that isn't the root of this problem since they were surely active when I tried to access on the client and it still had not internet connection.

Last edited by MarthaParkin (2018-04-10 21:21:20)