Hello,
I set up OpenVPN on my Synology NAS (DS218+) on December 22, and was able to connect to the shares on the Synology NAS while using public wifi at a mall, but since that time, I have not been able to reach the Synology NAS...
The OpenVPN connection succeeds when I give it my username and password (so port forwarding of 1194/UDP) appears to work, but why can I not see the NAS shares any longer? I'm probably going to get a Synology RT2600AC router (which supports VPN Server Plus in it's RSM, which includes OpenVPN) in the future, but would like to know what is going on...here is some information:
Sun Dec 30 18:27:01 2018 SIGUSR1[soft,init_instance] received, process restarting
Sun Dec 30 18:27:06 2018 WARNING: No server certificate verification method has been enabled. See
http://openvpn.net/howto.html#mitm for more info.
Sun Dec 30 18:27:06 2018 TCP/UDP: Preserving recently used remote address: [AF_INET]xxx.xxx.xxx.12:1194
Sun Dec 30 18:27:06 2018 UDP link local (bound): [AF_INET][undef]:1194
Sun Dec 30 18:27:06 2018 UDP link remote: [AF_INET]98.160.179.12:1194
Sun Dec 30 18:27:06 2018 [synology.com] Peer Connection Initiated with [AF_INET]xx.xxx.xxx.12:1194
Sun Dec 30 18:27:08 2018 open_tun
Sun Dec 30 18:27:08 2018 TAP-WIN32 device [Ethernet 3] opened: \\.\Global\{AA95997D-6014-40A2-9241-2B1DA2285507}.tap
Sun Dec 30 18:27:08 2018 Notified TAP-Windows driver to set a DHCP IP/netmask of 10.8.0.6/255.255.255.252 on interface {AA95997D-6014-40A2-9241-2B1DA2285507} [DHCP-serv: 10.8.0.5, lease-time: 31536000]
Sun Dec 30 18:27:08 2018 Successful ARP Flush on interface [14] {AA95997D-6014-40A2-9241-2B1DA2285507}
Sun Dec 30 18:27:08 2018 do_ifconfig, tt->did_ifconfig_ipv6_setup=0
Sun Dec 30 18:27:13 2018 Initialization Sequence Completed
Interface: 192.168.1.75 --- 0x8
Internet Address Physical Address Type
98.160.179.12 e4-6f-13-45-a3-e0 dynamic
192.168.1.1 e4-6f-13-45-a3-e0 dynamic
192.168.1.10 00-24-8c-d1-1c-0e dynamic
192.168.1.60 00-11-32-89-6d-eb dynamic <--- Internal ADDR of Synology NAS (which I can see fine on my LAN)
192.168.1.70 00-21-b7-7b-60-f5 dynamic
192.168.1.255 ff-ff-ff-ff-ff-ff static
224.0.0.22 01-00-5e-00-00-16 static
224.0.0.251 01-00-5e-00-00-fb static
224.0.0.252 01-00-5e-00-00-fc static
239.255.255.250 01-00-5e-7f-ff-fa static
255.255.255.255 ff-ff-ff-ff-ff-ff static
Interface: 10.8.0.6 --- 0xe
Internet Address Physical Address Type
10.8.0.5 00-ff-ab-95-99-7d dynamic
10.8.0.7 ff-ff-ff-ff-ff-ff static
224.0.0.22 01-00-5e-00-00-16 static
224.0.0.251 01-00-5e-00-00-fb static
224.0.0.252 01-00-5e-00-00-fc static
239.255.255.250 01-00-5e-7f-ff-fa static
255.255.255.255 ff-ff-ff-ff-ff-ff static
Server side OpenVPN IP would be 10.8.0.5/30
If you need more information, let me know and I will try to supply it 😃