I am using a wifi in an office.
At home, I have a VPN server running on a Synology DiskStation.
I can connect to my VPN server using its DynDNS-adress and a PPTP connection I configured in the network manager of my laptop. After connecting my laptop still has the IP 192.168.10.27.
The disk station is reachable on http://10.0.0.0:port (e.g. the webpage of the administration website) and according to the VPN server logs the laptop then gets another IP 10.0.0.1. This is what I expected. I am a bit confused that the network manager shows under active connections two entries, one for the wifi and one for the VPN, and both have the same IP 192.168.10.27.
Now, no internet is working. If I ping 220.127.116.11 the ping gets lost. Also, if I ping my router on the home network, this ping gets lost.
There is a setting on the VPN server to use a specific IP as DNS server. I checked this and put in my home router's IP. This should make the VPN-server use the home router for resolving names.
Also, what I did was putting a route in the network manager. To my understanding I have to tell the VPN that all internet connections should be managed by my home router. So, I put in 192.168.0.1 as additional DNS server and created a route with this as address, 255.255.255.0 as netmask and 10.0.0.0 as gateway. (I took that out as it was not working.)
After I connected I was able to load a webpage, but then after some seconds the internet connection was lost again.
Where am I wrong?
After connecting ifconfig shows an added item:
ppp0 Link encap:Punkt-zu-Punkt-Verbindung inet Adresse:10.0.0.1 P-z-P:10.0.0.0 Maske:255.255.255.255 UP PUNKTZUPUNKT RUNNING NOARP MULTICAST MTU:1400 Metrik:1 RX-Pakete:7 Fehler:0 Verloren:0 Überläufe:0 Fenster:0 TX-Pakete:7 Fehler:0 Verloren:0 Überläufe:0 Träger:0 Kollisionen:0 Sendewarteschlangenlänge:3 RX-Bytes:88 (88.0 B) TX-Bytes:106 (106.0 B) ben@acer:~$ ip r s default dev ppp0 proto static 10.0.0.0 dev ppp0 proto kernel scope link src 10.0.0.1 18.104.22.168 via 192.168.1.1 dev wlan0 proto static 22.214.171.124 via 192.168.1.1 dev wlan0 src 192.168.10.27 192.168.0.0/20 dev wlan0 proto kernel scope link src 192.168.10.27 metric 9 ben@acer:~$ route -n Kernel-IP-Routentabelle Ziel Router Genmask Flags Metric Ref Use Iface 0.0.0.0 0.0.0.0 0.0.0.0 U 0 0 0 ppp0 10.0.0.0 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0 126.96.36.199 192.168.1.1 255.255.255.255 UGH 0 0 0 wlan0 188.8.131.52 192.168.1.1 255.255.255.255 UGH 0 0 0 wlan0 192.168.0.0 0.0.0.0 255.255.240.0 U 9 0 0 wlan0
I like that 10.0.0.0 seems to be the default route but I am not sure if there should be a gateway somewhere in it. In my case that gateway should probably be the router on my home network with the IP 192.168.0.1. Is this information missing in the routing table?