Yet another routing problem on W10 :-)

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danko33
OpenVpn Newbie
Posts: 8
Joined: Thu Oct 14, 2021 5:56 pm

Yet another routing problem on W10 :-)

Post by danko33 » Tue Jul 12, 2022 3:57 pm

Hello

i ve just installed Open VPN 2.5 Server on a fresh windows 10 virtual machine.
i can connect to my vpn, get an ip and ping the vpn server's ip (10.8.0.1), the host's ip (192.168.1.5) and the client (10.8.0.6) but i can't go further on my LAN... for exemple i can't ping 192.168.1.3 which is an alive server on my LAN, of course authorized to answer at ICMP request.. :-)

VPN ip : 10.8.0.1
VPN ip client (my mobile phone for exemple) : 10.8.0.6
server IP : 192.168.1.5
gateway : 192.168.1.1 (internet provider router)
and all my machines are on 192.168.1.x ip range (very simple LAN)

server config:
[oconf=]
port xxxxx
proto udp4
dev tun
ca ca.crt
cert server.crt
key server.key
dh dh.pem
server 10.8.0.0 255.255.255.0
ifconfig-pool-persist ipp.txt
push "redirect-gateway def1"
push "dhcp-option DNS 8.8.8.8"
keepalive 10 120
persist-key
persist-tun
status openvpn-status.log
verb 4
[oconf]

client config:
[oconf]
client

proto udp4
dev tun
remote aaa.bbb.ccc xxxxx
resolv-retry infinite
nobind
ca ca.crt
cert cert.crt
key key.key
route-delay 2
route-method exe
redirect-gateway def1
persist-key
persist-tun
verb 4
[/oconf]

routing table on server :

destination / mask / gateway / interface / metric
0.0.0.0 0.0.0.0 192.168.1.1 192.168.1.5 26
10.8.0.0 255.255.255.0 10.8.0.2 10.8.0.1 281
10.8.0.0 255.255.255.252 On-link 10.8.0.1 281
10.8.0.1 255.255.255.255 On-link 10.8.0.1 281
10.8.0.3 255.255.255.255 On-link 10.8.0.1 281
127.0.0.0 255.0.0.0 On-link 127.0.0.1 331
127.0.0.1 255.255.255.255 On-link 127.0.0.1 331
127.255.255.255 255.255.255.255 On-link 127.0.0.1 331
192.168.1.0 255.255.255.0 On-link 192.168.1.5 281
192.168.1.5 255.255.255.255 On-link 192.168.1.5 281
192.168.1.255 255.255.255.255 On-link 192.168.1.5 281
224.0.0.0 240.0.0.0 On-link 127.0.0.1 331
224.0.0.0 240.0.0.0 On-link 192.168.1.5 281
224.0.0.0 240.0.0.0 On-link 10.8.0.1 281
255.255.255.255 255.255.255.255 On-link 127.0.0.1 331
255.255.255.255 255.255.255.255 On-link 192.168.1.5 281
255.255.255.255 255.255.255.255 On-link 10.8.0.1 281

on win10 i have enabled routing ("EnableRouter" regedit value to 1) and started routing service "RemoteAccess" and disabled firewall (for tests only :-) )

do you have any idea ?

Thanks

Meserias
OpenVpn Newbie
Posts: 18
Joined: Sun Oct 17, 2021 3:01 pm

Re: Yet another routing problem on W10 :-)

Post by Meserias » Fri Jul 22, 2022 10:19 am

1) add a persistent route in any LAN machine from server side in order to reach it from a client....
2) enable routing on all interfaces involved in OpenVPN server

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