I have a OpenVPN AS instance (AWS). I am trying to route traffic from my VPC (172.31.10.0/20) to home (192.168.5.0/24).
What works: I can route ALL traffic from home (192.168.5.0/24) via 192.168.5.4 to 172.31.10.0/20
ROUTE: ANY Source to Dest 172.31.10.0/20 via 192.168.5.4
What does not work: I cannot route all traffic from AWS (172.31.10.0/20)via 172.31.10.5 to 192.168.5.0/24
Example I cannot ping from 172.31.10.15(Win Server AWS) to 192.168.5.4( RasPi OpenVPN Client). When I do a tcpdump from 172.31.10.5( OpenVPN Server) for ping packets, I get nothing.
ROUTE: Dest 192.168.5.0/24 via 172.31.10.5
What I have done to troubleshoot
-OpenVPN Server Dest Check is disabled
-VPC, Routing Tables, I created a route to 192.168.5.0/24 via dest OpenVPn Server Instance 172.31.10.5. see screenshot
Route Table from AWS OpenVPN Server 172.31.10.5 (cannot reach 192.168.5.4):
default via 172.31.10.1 dev eth0 : 172.27.224.0/21 dev as0t0 proto kernel scope link src 172.27.224.1
172.27.232.0/21 dev as0t1 proto kernel scope link src 172.27.232.1
172.31.10.0/20 dev eth0 proto kernel scope link src 172.31.10.5
192.168.5.0/24 dev as0t1 proto static
Route Table From Home OpenVPN Client 192.168.5.4(which can reach 172.31.10.0/20):
default via 192.168.5.254 dev eth0 onlink
13.59.64.181 via 192.168.5.254 dev eth0
172.27.224.0/20 via 172.27.232.1 dev tun0 metric 101
172.27.232.0/21 dev tun0 proto kernel scope link src 172.27.232.5
172.31.0.0/16 via 172.27.232.1 dev tun0 metric 101
192.168.5.0/24 dev eth0 proto kernel scope link src 192.168.5.4