Netgate Discussion Forum
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Search
    • Register
    • Login

    2 Networks, 2 Gateways, same Router. Routing Question

    Scheduled Pinned Locked Moved Routing and Multi WAN
    20 Posts 2 Posters 1.4k Views
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • L
      LeiShen @Rico
      last edited by

      @Rico : ip forwarding is turned on.
      When I entered your 'ip route' command, I got this:

      root@wormhole:/home/pi# ip route add 172.27.2.0/24 via 172.27.3.1 dev eth0
      RTNETLINK answers: File exists
      
      

      So, it looks like that's already in there. But still no joy.

      1 Reply Last reply Reply Quote 0
      • RicoR
        Rico LAYER 8 Rebel Alliance
        last edited by

        What is the output of ip route?

        -Rico

        L 1 Reply Last reply Reply Quote 0
        • L
          LeiShen @Rico
          last edited by

          @Rico : Lots of stuff!

          root@wormhole:/etc/dnsmasq.d# ip route
          0.0.0.0/1 via 10.8.0.5 dev tun0
          default via 172.27.3.1 dev eth0  metric 202
          10.8.0.0/24 via 10.8.0.5 dev tun0
          10.8.0.1 via 10.8.0.5 dev tun0
          10.8.0.5 dev tun0  proto kernel  scope link  src 10.8.0.6
          10.10.0.0/24 via 10.10.0.5 dev tun2
          10.10.0.1 via 10.10.0.5 dev tun2
          10.10.0.5 dev tun2  proto kernel  scope link  src 10.10.0.6
          47.149.29.80 via 172.27.3.1 dev eth0
          127.0.0.1 via 172.27.3.1 dev eth0
          128.0.0.0/1 via 10.8.0.5 dev tun0
          136.32.128.65 via 172.27.3.1 dev eth0
          136.61.208.161 via 172.27.3.1 dev eth0
          139.178.68.38 via 172.27.3.1 dev eth0
          139.178.82.59 via 172.27.3.1 dev eth0
          172.27.2.0/24 via 172.27.3.1 dev eth0
          172.27.3.0/24 dev eth0  proto kernel  scope link  src 172.27.3.3  metric 202
          
          
          1 Reply Last reply Reply Quote 0
          • RicoR
            Rico LAYER 8 Rebel Alliance
            last edited by

            That looks Okay to me, but routing is still asynchronous.
            You can either add routes to your endpoints in the 172.27.3.0/24 network or tell pfSense to use 172.27.3.3 as Gateway for 172.27.3.0/24. Check https://docs.netgate.com/pfsense/en/latest/book/routing/static-routes.html

            -Rico

            L 1 Reply Last reply Reply Quote 1
            • RicoR
              Rico LAYER 8 Rebel Alliance
              last edited by

              Probably the best and clean solution would be to get rid of the Raspi and use pfSense as your VPN Client.
              Check out https://www.netgate.com/resources/videos/openvpn-as-a-wan-on-pfsense.html

              -Rico

              1 Reply Last reply Reply Quote 1
              • L
                LeiShen @Rico
                last edited by

                @Rico
                Ok, so I already had 172.27.3.3 set up as a gateway for the 172.27.3.x Interface.

                Not sure how to add a route to an endpoint in the 172.27.3.0/24 network, but I'll dig around for how to do that on those devices I need to access from 172.27.2.x

                Thanks!

                1 Reply Last reply Reply Quote 0
                • L
                  LeiShen
                  last edited by LeiShen

                  I'm still dead.
                  Can't figure out how to set a static route on hassio or a tasmota device.
                  And I know my

                  172.27.2.0/24 via 172.27.3.1 dev eth0
                  

                  works, because if I remove that route, then I can't get to anything on the 2.x network from the 3.x network. But I'm still unable to access anything on the 3.x network from the 2.x network.

                  I'll jump over the the OpenVPN forum and see if they can help. But if anyone has any further ideas, please let me know.

                  Thanks @Rico !!

                  1 Reply Last reply Reply Quote 0
                  • L
                    LeiShen
                    last edited by

                    Here's a tracert from the 172.27.2.x network (my PC) to a device on the 172.27.3.x network (my Home Assistant Server):

                    C:\Users\DaHai>tracert hassio.asgard
                    
                    Tracing route to hassio.asgard [172.27.3.4]
                    over a maximum of 30 hops:
                    
                      1     1 ms     1 ms     1 ms  bifrost.asgard [172.27.2.1]
                      2     2 ms     2 ms     1 ms  hassio.asgard [172.27.3.4]
                    
                    Trace complete.
                    

                    It routes and complete pretty much instantly, but I can't bring its web page up in my browser.
                    I get "The site can't be reached"

                    This is the same with any other device on the 3.x network when I try to access it via its web page from the 2.x network.

                    1 Reply Last reply Reply Quote 0
                    • L
                      LeiShen
                      last edited by

                      Maybe the iptables.up.rules is set up wrong on the OpenVPN RPI3B+ device?

                      # Generated by iptables-save v1.4.21 on Tue Nov 29 15:32:04 2016
                      *nat
                      :PREROUTING ACCEPT [0:0]
                      :INPUT ACCEPT [0:0]
                      :OUTPUT ACCEPT [25:1612]
                      :POSTROUTING ACCEPT [25:1612]
                      -A POSTROUTING -o tun0 -j MASQUERADE
                      -A POSTROUTING -o tun1 -j MASQUERADE
                      -A POSTROUTING -o tun2 -j MASQUERADE
                      -A POSTROUTING -o eth0 -j MASQUERADE
                      COMMIT
                      # Completed on Tue Nov 29 15:32:04 2016
                      
                      1 Reply Last reply Reply Quote 0
                      • L
                        LeiShen
                        last edited by

                        @LeiShen said in 2 Networks, 2 Gateways, same Router. Routing Question:

                        -A POSTROUTING -o eth0 -j MASQUERADE

                        Well, it looks like that was the problem. I don't know why it was in there. I don't know what taking it out might break, but now I can get to 3.x devices from the 2.x network!

                        I'll have to look through my notes to see why it was put in there to begin with...

                        Cheers!

                        1 Reply Last reply Reply Quote 0
                        • First post
                          Last post
                        Copyright 2025 Rubicon Communications LLC (Netgate). All rights reserved.