Routing info as requested, listed below.

----- Original Message ----- 
From: "Mathias Jeschke" <openvpn-us...@0xaffe.de>
To: <openvpn-users@lists.sourceforge.net>
Cc: "Jeff Boyce" <jbo...@meridianenv.com>
Sent: Tuesday, November 11, 2014 1:32 AM
Subject: Re: [Openvpn-users] Classic case of can't reach machine behind 
OpenVPN server from the connected client


> Hi Jeff,
>
> On 11/10/2014 10:20 PM, Jeff Boyce wrote:
>
>> However, I turned off the firewall on the OpernWRT router (confirmed with 
>> $
>> iptables -L -n) then ran the ping test again.  The result is the same 
>> (Reply
>> from 10.4.0.1: Destination host unreachable).  That to me indicates that 
>> my
>> issue is with routing, and not with the firewall.  Which then takes me to
>> the decision diagram provided by David previously and puts me at the 
>> point
>> of  "Add a route to the router so it knows how to reach the VPN subnet".
>> Which is where my lack of routing knowledge gets me stuck, as I am not 
>> sure
>> what exactly to put for a static route, and also the right syntax to put
>> into an OpenWRT config.
>>
>> Does it seem like I am on the right track with this synopsis?
>
> Could you please post the routing table of the Vista box (192.168.123.111) 
> too?
>
> Cheers,
> Mathias.
>

VPN client routing table after establishing a connection to the OpenVPN 
server.



IPv4 Route Table

===========================================================================

Active Routes:

Network Destination        Netmask          Gateway       Interface  Metric

          0.0.0.0          0.0.0.0   192.168.112.11  192.168.112.125     10

         10.4.0.1  255.255.255.255         10.4.0.5         10.4.0.6     31

         10.4.0.4  255.255.255.252         On-link          10.4.0.6    286

         10.4.0.6  255.255.255.255         On-link          10.4.0.6    286

         10.4.0.7  255.255.255.255         On-link          10.4.0.6    286

        127.0.0.0        255.0.0.0         On-link         127.0.0.1    306

        127.0.0.1  255.255.255.255         On-link         127.0.0.1    306

  127.255.255.255  255.255.255.255         On-link         127.0.0.1    306

    192.168.112.0    255.255.255.0         On-link   192.168.112.125    266

  192.168.112.125  255.255.255.255         On-link   192.168.112.125    266

  192.168.112.255  255.255.255.255         On-link   192.168.112.125    266

    192.168.123.0    255.255.255.0         10.4.0.5         10.4.0.6     31

        224.0.0.0        240.0.0.0         On-link         127.0.0.1    306

        224.0.0.0        240.0.0.0         On-link          10.4.0.6    286

        224.0.0.0        240.0.0.0         On-link   192.168.112.125    266

  255.255.255.255  255.255.255.255         On-link         127.0.0.1    306

  255.255.255.255  255.255.255.255         On-link          10.4.0.6    286

  255.255.255.255  255.255.255.255         On-link   192.168.112.125    266

===========================================================================

Persistent Routes:

  None





OpenWRT Router / OpenVPN Server routing table after a connection is 
initiated from a remote VPN client



root@gateway:~# route -n

Kernel IP routing table

Destination     Gateway         Genmask         Flags Metric Ref    Use 
Iface

0.0.0.0         174.125.113.1   0.0.0.0         UG    0      0        0 
pppoe-wan

10.4.0.0        10.4.0.2        255.255.255.0   UG    0      0        0 tun0

10.4.0.2        0.0.0.0         255.255.255.255 UH    0      0        0 tun0

174.125.113.1   0.0.0.0         255.255.255.255 UH    0      0        0 
pppoe-wan

192.168.123.0   0.0.0.0         255.255.255.0   U     0      0        0 
br-lan





Routing table of Vista Box behind OpenVPN Server



IPv4 Route Table

===========================================================================

Active Routes:

Network Destination        Netmask          Gateway       Interface  Metric

          0.0.0.0          0.0.0.0    192.168.123.2  192.168.123.111     10

        127.0.0.0        255.0.0.0         On-link         127.0.0.1    306

        127.0.0.1  255.255.255.255         On-link         127.0.0.1    306

  127.255.255.255  255.255.255.255         On-link         127.0.0.1    306

     192.168.56.0    255.255.255.0         On-link      192.168.56.1    276

     192.168.56.1  255.255.255.255         On-link      192.168.56.1    276

   192.168.56.255  255.255.255.255         On-link      192.168.56.1    276

    192.168.123.0    255.255.255.0         On-link   192.168.123.111    266

  192.168.123.111  255.255.255.255         On-link   192.168.123.111    266

  192.168.123.255  255.255.255.255         On-link   192.168.123.111    266

        224.0.0.0        240.0.0.0         On-link         127.0.0.1    306

        224.0.0.0        240.0.0.0         On-link      192.168.56.1    276

        224.0.0.0        240.0.0.0         On-link   192.168.123.111    266

  255.255.255.255  255.255.255.255         On-link         127.0.0.1    306

  255.255.255.255  255.255.255.255         On-link      192.168.56.1    276

  255.255.255.255  255.255.255.255         On-link   192.168.123.111    266

===========================================================================

Persistent Routes:

  Network Address          Netmask  Gateway Address  Metric

         10.4.0.0    255.255.255.0         10.4.0.1       1

          0.0.0.0          0.0.0.0    192.168.123.2  Default

===========================================================================





VPN Client Config

client

dev tun

proto udp

remote <dynamic dns service> 1194

pull

nobind

persist-key

persist-tun

tls-client

ca "C:\\Program Files\\OpenVPN\\config\\ca.crt"

cert "C:\\Program Files\\OpenVPN\\config\\JABopti-755.crt"

key "C:\\Program Files\\OpenVPN\\config\\JABopti-755.key"

ns-cert-type server

resolv-retry infinite

comp-lzo

route-method exe

route-delay 2

verb 4





VPN Server Config

port 1194

proto udp

dev tun

tls-server

ca /etc/easy-rsa/keys/ca.crt

cert /etc/easy-rsa/keys/GatewayVPNServer.crt

key /etc/easy-rsa/keys/GatewayVPNServer.key

dh /etc/easy-rsa/keys/dh2048.pem

server 10.4.0.0 255.255.255.0

float

ifconfig-pool-persist /etc/openvpn/ipp.txt 120

push "route 192.168.123.0 255.255.255.0"

keepalive 10 120

comp-lzo

persist-key

persist-tun

status /etc/openvpn-status.log

log-append  /home/openvpn.log

verb 6





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