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OpenVPN Connects but can't see network


OpenVPN connects, but I can't see the networkUsing pfSense, OpenVPN Connects but Still Can't See the NetworkUse both OpenVPN & eth0 togetherOpenVPN connects but no internet accessIPfire OpenVPN access to LAN (Green) networkDDWRT - OpenVPN connects, but can't communicateOpenWRT OpenVPN LAN accessCan't ping specific IP via OpenVPNI can connect to VPN using openvpn but I can't get internetWireguard server and openvpn client - Forward traffic from wg0 to tun0 (openvpn tunnel)













0















I can connect to the firewall but cannot get to the lan. The lan can ping the interface of the open vpn gateway. My workstation cannot ping the interface of the openvpn gateway. I tried setting a route on my workstation but no change. I have tried both UDP and TCP connections and have added explicit rules to the LAN interface.










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    0















    I can connect to the firewall but cannot get to the lan. The lan can ping the interface of the open vpn gateway. My workstation cannot ping the interface of the openvpn gateway. I tried setting a route on my workstation but no change. I have tried both UDP and TCP connections and have added explicit rules to the LAN interface.










    share|improve this question














    bumped to the homepage by Community 2 mins ago


    This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.


















      0












      0








      0








      I can connect to the firewall but cannot get to the lan. The lan can ping the interface of the open vpn gateway. My workstation cannot ping the interface of the openvpn gateway. I tried setting a route on my workstation but no change. I have tried both UDP and TCP connections and have added explicit rules to the LAN interface.










      share|improve this question














      I can connect to the firewall but cannot get to the lan. The lan can ping the interface of the open vpn gateway. My workstation cannot ping the interface of the openvpn gateway. I tried setting a route on my workstation but no change. I have tried both UDP and TCP connections and have added explicit rules to the LAN interface.







      openvpn






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Mar 15 '12 at 18:38









      Sean KennedySean Kennedy

      11




      11





      bumped to the homepage by Community 2 mins ago


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      bumped to the homepage by Community 2 mins ago


      This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
























          1 Answer
          1






          active

          oldest

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          0














          The "server-side" of OpenVPN creates a virtual network interface on that end, usually tun0. So, on the system that you are connecting to, that system will have an eth0, lo, and then a tun0.



          However, if nothing on the "server-side" is telling that system to forward packets coming in from tun0 to anywhere else, it won't. Linux systems are usually not set to "promiscuously route" by default.



          If you are the one operating OpenVPN on the "server-side," you need to look into setting up basic routing, first by echo 1 > /proc/sys/net/ipv4/ip_forward (I think), and then setting it up some basic firewall/access control rules with iptables since, after all, you just turned that machine into a router. This must be done if you want to reach hosts other than the one the openvpn instance is running on. Alternatively you can cobble up some quick "static port address translation" with rinetd, nc or similar tools.



          Again, all this must be done on the "server-side." You can't do anything on your end, the "client" end.






          share|improve this answer
























          • There is the 'push' server configuration directive that will do that very easily, assuming that is what the problem is. Also, how do you know he's using Linux?

            – paradroid
            Mar 15 '12 at 19:40











          • This is the standalone version of pfsense. Not sure if that is an option. I can't find any info on doing that.

            – Sean Kennedy
            Mar 15 '12 at 19:48













          • its running on FreeBSD

            – Sean Kennedy
            Mar 15 '12 at 19:50











          • I went ahead and made this addition to the sysctl.conf net.ipv4.ip_forward = 1 and rebooted. Behavior didn't change

            – Sean Kennedy
            Mar 15 '12 at 20:00













          • The push server configuration will push routes to the client. On the server side, you need to set up routing manually. I've never set up routing on FreeBSD, but you might need to do more than the sysctl you did.

            – LawrenceC
            Mar 15 '12 at 20:17











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          1 Answer
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          1 Answer
          1






          active

          oldest

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          active

          oldest

          votes






          active

          oldest

          votes









          0














          The "server-side" of OpenVPN creates a virtual network interface on that end, usually tun0. So, on the system that you are connecting to, that system will have an eth0, lo, and then a tun0.



          However, if nothing on the "server-side" is telling that system to forward packets coming in from tun0 to anywhere else, it won't. Linux systems are usually not set to "promiscuously route" by default.



          If you are the one operating OpenVPN on the "server-side," you need to look into setting up basic routing, first by echo 1 > /proc/sys/net/ipv4/ip_forward (I think), and then setting it up some basic firewall/access control rules with iptables since, after all, you just turned that machine into a router. This must be done if you want to reach hosts other than the one the openvpn instance is running on. Alternatively you can cobble up some quick "static port address translation" with rinetd, nc or similar tools.



          Again, all this must be done on the "server-side." You can't do anything on your end, the "client" end.






          share|improve this answer
























          • There is the 'push' server configuration directive that will do that very easily, assuming that is what the problem is. Also, how do you know he's using Linux?

            – paradroid
            Mar 15 '12 at 19:40











          • This is the standalone version of pfsense. Not sure if that is an option. I can't find any info on doing that.

            – Sean Kennedy
            Mar 15 '12 at 19:48













          • its running on FreeBSD

            – Sean Kennedy
            Mar 15 '12 at 19:50











          • I went ahead and made this addition to the sysctl.conf net.ipv4.ip_forward = 1 and rebooted. Behavior didn't change

            – Sean Kennedy
            Mar 15 '12 at 20:00













          • The push server configuration will push routes to the client. On the server side, you need to set up routing manually. I've never set up routing on FreeBSD, but you might need to do more than the sysctl you did.

            – LawrenceC
            Mar 15 '12 at 20:17
















          0














          The "server-side" of OpenVPN creates a virtual network interface on that end, usually tun0. So, on the system that you are connecting to, that system will have an eth0, lo, and then a tun0.



          However, if nothing on the "server-side" is telling that system to forward packets coming in from tun0 to anywhere else, it won't. Linux systems are usually not set to "promiscuously route" by default.



          If you are the one operating OpenVPN on the "server-side," you need to look into setting up basic routing, first by echo 1 > /proc/sys/net/ipv4/ip_forward (I think), and then setting it up some basic firewall/access control rules with iptables since, after all, you just turned that machine into a router. This must be done if you want to reach hosts other than the one the openvpn instance is running on. Alternatively you can cobble up some quick "static port address translation" with rinetd, nc or similar tools.



          Again, all this must be done on the "server-side." You can't do anything on your end, the "client" end.






          share|improve this answer
























          • There is the 'push' server configuration directive that will do that very easily, assuming that is what the problem is. Also, how do you know he's using Linux?

            – paradroid
            Mar 15 '12 at 19:40











          • This is the standalone version of pfsense. Not sure if that is an option. I can't find any info on doing that.

            – Sean Kennedy
            Mar 15 '12 at 19:48













          • its running on FreeBSD

            – Sean Kennedy
            Mar 15 '12 at 19:50











          • I went ahead and made this addition to the sysctl.conf net.ipv4.ip_forward = 1 and rebooted. Behavior didn't change

            – Sean Kennedy
            Mar 15 '12 at 20:00













          • The push server configuration will push routes to the client. On the server side, you need to set up routing manually. I've never set up routing on FreeBSD, but you might need to do more than the sysctl you did.

            – LawrenceC
            Mar 15 '12 at 20:17














          0












          0








          0







          The "server-side" of OpenVPN creates a virtual network interface on that end, usually tun0. So, on the system that you are connecting to, that system will have an eth0, lo, and then a tun0.



          However, if nothing on the "server-side" is telling that system to forward packets coming in from tun0 to anywhere else, it won't. Linux systems are usually not set to "promiscuously route" by default.



          If you are the one operating OpenVPN on the "server-side," you need to look into setting up basic routing, first by echo 1 > /proc/sys/net/ipv4/ip_forward (I think), and then setting it up some basic firewall/access control rules with iptables since, after all, you just turned that machine into a router. This must be done if you want to reach hosts other than the one the openvpn instance is running on. Alternatively you can cobble up some quick "static port address translation" with rinetd, nc or similar tools.



          Again, all this must be done on the "server-side." You can't do anything on your end, the "client" end.






          share|improve this answer













          The "server-side" of OpenVPN creates a virtual network interface on that end, usually tun0. So, on the system that you are connecting to, that system will have an eth0, lo, and then a tun0.



          However, if nothing on the "server-side" is telling that system to forward packets coming in from tun0 to anywhere else, it won't. Linux systems are usually not set to "promiscuously route" by default.



          If you are the one operating OpenVPN on the "server-side," you need to look into setting up basic routing, first by echo 1 > /proc/sys/net/ipv4/ip_forward (I think), and then setting it up some basic firewall/access control rules with iptables since, after all, you just turned that machine into a router. This must be done if you want to reach hosts other than the one the openvpn instance is running on. Alternatively you can cobble up some quick "static port address translation" with rinetd, nc or similar tools.



          Again, all this must be done on the "server-side." You can't do anything on your end, the "client" end.







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Mar 15 '12 at 19:29









          LawrenceCLawrenceC

          59.5k11103181




          59.5k11103181













          • There is the 'push' server configuration directive that will do that very easily, assuming that is what the problem is. Also, how do you know he's using Linux?

            – paradroid
            Mar 15 '12 at 19:40











          • This is the standalone version of pfsense. Not sure if that is an option. I can't find any info on doing that.

            – Sean Kennedy
            Mar 15 '12 at 19:48













          • its running on FreeBSD

            – Sean Kennedy
            Mar 15 '12 at 19:50











          • I went ahead and made this addition to the sysctl.conf net.ipv4.ip_forward = 1 and rebooted. Behavior didn't change

            – Sean Kennedy
            Mar 15 '12 at 20:00













          • The push server configuration will push routes to the client. On the server side, you need to set up routing manually. I've never set up routing on FreeBSD, but you might need to do more than the sysctl you did.

            – LawrenceC
            Mar 15 '12 at 20:17



















          • There is the 'push' server configuration directive that will do that very easily, assuming that is what the problem is. Also, how do you know he's using Linux?

            – paradroid
            Mar 15 '12 at 19:40











          • This is the standalone version of pfsense. Not sure if that is an option. I can't find any info on doing that.

            – Sean Kennedy
            Mar 15 '12 at 19:48













          • its running on FreeBSD

            – Sean Kennedy
            Mar 15 '12 at 19:50











          • I went ahead and made this addition to the sysctl.conf net.ipv4.ip_forward = 1 and rebooted. Behavior didn't change

            – Sean Kennedy
            Mar 15 '12 at 20:00













          • The push server configuration will push routes to the client. On the server side, you need to set up routing manually. I've never set up routing on FreeBSD, but you might need to do more than the sysctl you did.

            – LawrenceC
            Mar 15 '12 at 20:17

















          There is the 'push' server configuration directive that will do that very easily, assuming that is what the problem is. Also, how do you know he's using Linux?

          – paradroid
          Mar 15 '12 at 19:40





          There is the 'push' server configuration directive that will do that very easily, assuming that is what the problem is. Also, how do you know he's using Linux?

          – paradroid
          Mar 15 '12 at 19:40













          This is the standalone version of pfsense. Not sure if that is an option. I can't find any info on doing that.

          – Sean Kennedy
          Mar 15 '12 at 19:48







          This is the standalone version of pfsense. Not sure if that is an option. I can't find any info on doing that.

          – Sean Kennedy
          Mar 15 '12 at 19:48















          its running on FreeBSD

          – Sean Kennedy
          Mar 15 '12 at 19:50





          its running on FreeBSD

          – Sean Kennedy
          Mar 15 '12 at 19:50













          I went ahead and made this addition to the sysctl.conf net.ipv4.ip_forward = 1 and rebooted. Behavior didn't change

          – Sean Kennedy
          Mar 15 '12 at 20:00







          I went ahead and made this addition to the sysctl.conf net.ipv4.ip_forward = 1 and rebooted. Behavior didn't change

          – Sean Kennedy
          Mar 15 '12 at 20:00















          The push server configuration will push routes to the client. On the server side, you need to set up routing manually. I've never set up routing on FreeBSD, but you might need to do more than the sysctl you did.

          – LawrenceC
          Mar 15 '12 at 20:17





          The push server configuration will push routes to the client. On the server side, you need to set up routing manually. I've never set up routing on FreeBSD, but you might need to do more than the sysctl you did.

          – LawrenceC
          Mar 15 '12 at 20:17


















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