Hi Michael,

If you were using AstLinux instead of the Mikrotik in your home office I would 
point you to the Firewall tab ...

Network -> Firewall Configuration -> Firewall Options:

___ Allow OpenVPN Client tunnel to the [ 1st ] LAN Interface(s)

___ Allow OpenVPN Server tunnel to the [ 1st ] LAN Interface(s)


So, for the Mikrotik it may be a similar firewall "forwarding" rule for the 
OpenVPN 'tun' interface <-> LAN interface.

BTW, the proper OpenVPN config (your's looks good at a quick glance) will add 
the needed routes automatically.

Lonnie



> On Mar 11, 2020, at 6:31 AM, Michael Knill 
> <michael.kn...@ipcsolutions.com.au> wrote:
> 
> Hi Group
>  
> I have been trying out Mikrotik’s RouterOS v7 specifically to test UDP 
> OpenVPN.
> I have set up OpenVPN from my Home Office router (OpenVPN Client) to my 
> hosted Astlinux (OpenVPN Server) for telephony purposes only.
> The connection has come up fine and I can ping the OpenVPN addresses each way 
> from the terminating devices but I cant for the life of me get connectivity 
> working from the Home Office LAN to the Astlinux OpenVPN address.
> OpenVPN Subnet: 172.28.253.0/24. Astlinux gateway .1
> Home Office LAN: 172.16.16.0/24
>  
> I have set up the iroute file:
> 3000-IPC_Prod-CM1 kd # cat openvpn/ccd/IPC_Home_Office
> iroute 172.16.16.0 255.255.255.0
>  
> 3000-IPC_Prod-CM1 kd # ip route
> default via 221.121.132.145 dev eth0
> 172.16.16.0/24 via 172.28.253.1 dev tun0
> 172.28.253.0/24 dev tun0  proto kernel  scope link  src 172.28.253.1
> .......
>  
> ### gui.openvpn.conf - start ###
> ###
> ### Auth Method
> OVPN_USER_PASS_VERIFY="no"
> ### Device
> OVPN_DEV="tun0"
> ### Port Number
> OVPN_PORT="1194"
> ### Protocol
> OVPN_PROTOCOL="udp"
> ### Log Verbosity
> OVPN_VERBOSITY="4"
> ### Compression
> OVPN_LZO="no"
> ### QoS Passthrough
> OVPN_QOS="yes"
> ### Cipher
> OVPN_CIPHER=""
> ### Auth HMAC
> OVPN_AUTH=""
> ### Allowed External Hosts
> OVPN_TUNNEL_HOSTS="0/0"
> ### Client Isolation
> OVPN_CLIENT_ISOLATION="no"
> ### Server Hostname
> OVPN_HOSTNAME="30000.ipcaccess.net"
> ### Server IPv4 Network
> OVPN_SERVER="172.28.253.0 255.255.255.0"
> ### Server IPv6 Network
> OVPN_SERVERV6=""
> ### Topology
> OVPN_TOPOLOGY="subnet"
> ### Server Push
> OVPN_PUSH="
> "
> ### Raw Commands
> OVPN_OTHER="
> topology p2p
> route-gateway 172.28.253.1
> route 172.16.16.0 255.255.255.0
> "
> ### Private Key Size
> OVPN_CERT_KEYSIZE="2048"
> ### Signature Algorithm
> OVPN_CERT_ALGORITHM="sha256"
> ### CA File
> OVPN_CA="/mnt/kd/openvpn/webinterface/keys/ca.crt"
> ### CERT File
> OVPN_CERT="/mnt/kd/openvpn/webinterface/keys/server.crt"
> ### Key File
> OVPN_KEY="/mnt/kd/openvpn/webinterface/keys/server.key"
> ### DH File
> OVPN_DH="/mnt/kd/openvpn/webinterface/dh1024.pem"
> ### TLS-Auth File
> OVPN_TA=""
> ### Valid Clients
> OVPN_VALIDCLIENTS="
> ...........
> IPC_Home_Office
> "
> ### gui.openvpn.conf - end ###
>  
> I have looked at the firewall log on the Mikrotik and nothing comes up as 
> being denied. Any ideas on where to go next?
> Yes I realise it's a Beta version but as I can ping the OpenVPN address each 
> way, it just seems to be a routing problem.
>  
> Thanks all.
>  
> Regards
> Michael Knill
> _______________________________________________
> Astlinux-users mailing list
> Astlinux-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/astlinux-users
> 
> Donations to support AstLinux are graciously accepted via PayPal to 
> pay...@krisk.org.



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