Why is my D-Link IP webcam unreachable from within the LAN, but accessible from outside?












0















I recently bought a D-Link DCS-930L network webcam which is connected to my WLAN network. It retrieves a IP address via DHCP from DD-WRT based router (a TP-Link TL-WR1043ND), and it is listed under "Active wireless nodes".



The camera is registered to a webservice called "My DLink", which enables the user to access the webcam from the internet (via their webpage or via smartphone apps). This service works, and I can access the camera from outside.



However, when I try to connect from inside my (W)LAN, it says "No route to host". How is that possible?



--



EDIT: I found the answer by myself accidentally by skimming through the IP webcam settings. It turned out that the option Setup > Network Setup > UPnP Port Forwarding was set to Enable. I don't use UPnP in my LAN, and it is disabled on my router.



I don't understand how the enabled UPnP on the webcam could cause troubles, when there were no other devices supporting UPnP. Has anybody an explanation for this?










share|improve this question

























  • No route to host is a reply from your router, not the Webcam itself. Can you ping the IP address? Can you scan it with nmap? Does it appear as one of the DHCP clients in your DD-WRT router page (under Status -> LAN, active clients)?

    – MariusMatutiae
    Feb 2 '14 at 13:51













  • No, I can't ping it, but it does appear as well as DHCP client as WLAN client. imac:~ andreas$ ping 192.168.1.30 PING 192.168.1.30 (192.168.1.30): 56 data bytes Request timeout for icmp_seq 0 Request timeout for icmp_seq 1 Request timeout for icmp_seq 2 Request timeout for icmp_seq 3 Request timeout for icmp_seq 4 ^C --- 192.168.1.30 ping statistics --- 6 packets transmitted, 0 packets received, 100.0% packet loss

    – abaumg
    Feb 2 '14 at 13:54













  • I can however ssh into my router and ping it successfully from there: root@lonkero:~# ping 192.168.1.30 PING 192.168.1.30 (192.168.1.30): 56 data bytes 64 bytes from 192.168.1.30: seq=0 ttl=64 time=1.592 ms 64 bytes from 192.168.1.30: seq=1 ttl=64 time=1.658 ms 64 bytes from 192.168.1.30: seq=2 ttl=64 time=2.857 ms 64 bytes from 192.168.1.30: seq=3 ttl=64 time=1.645 ms --- 192.168.1.30 ping statistics --- 4 packets transmitted, 4 packets received, 0% packet loss round-trip min/avg/max = 1.592/1.938/2.857 ms

    – abaumg
    Feb 2 '14 at 13:55













  • Can you post your routing table?

    – MariusMatutiae
    Feb 2 '14 at 14:06











  • 192.168.100.1 * 255.255.255.255 UH 0 0 0 ppp0 10.100.10.2 * 255.255.255.255 UH 0 0 0 tun0 192.168.1.0 * 255.255.255.0 U 0 0 0 br0 10.100.10.0 10.100.10.2 255.255.255.0 UG 0 0 0 tun0 169.254.0.0 * 255.255.0.0 U 0 0 0 br0 127.0.0.0 * 255.0.0.0 U 0 0 0 lo default 192.168.100.1 0.0.0.0 UG 0 0 0 ppp0

    – abaumg
    Feb 2 '14 at 14:13


















0















I recently bought a D-Link DCS-930L network webcam which is connected to my WLAN network. It retrieves a IP address via DHCP from DD-WRT based router (a TP-Link TL-WR1043ND), and it is listed under "Active wireless nodes".



The camera is registered to a webservice called "My DLink", which enables the user to access the webcam from the internet (via their webpage or via smartphone apps). This service works, and I can access the camera from outside.



However, when I try to connect from inside my (W)LAN, it says "No route to host". How is that possible?



--



EDIT: I found the answer by myself accidentally by skimming through the IP webcam settings. It turned out that the option Setup > Network Setup > UPnP Port Forwarding was set to Enable. I don't use UPnP in my LAN, and it is disabled on my router.



I don't understand how the enabled UPnP on the webcam could cause troubles, when there were no other devices supporting UPnP. Has anybody an explanation for this?










share|improve this question

























  • No route to host is a reply from your router, not the Webcam itself. Can you ping the IP address? Can you scan it with nmap? Does it appear as one of the DHCP clients in your DD-WRT router page (under Status -> LAN, active clients)?

    – MariusMatutiae
    Feb 2 '14 at 13:51













  • No, I can't ping it, but it does appear as well as DHCP client as WLAN client. imac:~ andreas$ ping 192.168.1.30 PING 192.168.1.30 (192.168.1.30): 56 data bytes Request timeout for icmp_seq 0 Request timeout for icmp_seq 1 Request timeout for icmp_seq 2 Request timeout for icmp_seq 3 Request timeout for icmp_seq 4 ^C --- 192.168.1.30 ping statistics --- 6 packets transmitted, 0 packets received, 100.0% packet loss

    – abaumg
    Feb 2 '14 at 13:54













  • I can however ssh into my router and ping it successfully from there: root@lonkero:~# ping 192.168.1.30 PING 192.168.1.30 (192.168.1.30): 56 data bytes 64 bytes from 192.168.1.30: seq=0 ttl=64 time=1.592 ms 64 bytes from 192.168.1.30: seq=1 ttl=64 time=1.658 ms 64 bytes from 192.168.1.30: seq=2 ttl=64 time=2.857 ms 64 bytes from 192.168.1.30: seq=3 ttl=64 time=1.645 ms --- 192.168.1.30 ping statistics --- 4 packets transmitted, 4 packets received, 0% packet loss round-trip min/avg/max = 1.592/1.938/2.857 ms

    – abaumg
    Feb 2 '14 at 13:55













  • Can you post your routing table?

    – MariusMatutiae
    Feb 2 '14 at 14:06











  • 192.168.100.1 * 255.255.255.255 UH 0 0 0 ppp0 10.100.10.2 * 255.255.255.255 UH 0 0 0 tun0 192.168.1.0 * 255.255.255.0 U 0 0 0 br0 10.100.10.0 10.100.10.2 255.255.255.0 UG 0 0 0 tun0 169.254.0.0 * 255.255.0.0 U 0 0 0 br0 127.0.0.0 * 255.0.0.0 U 0 0 0 lo default 192.168.100.1 0.0.0.0 UG 0 0 0 ppp0

    – abaumg
    Feb 2 '14 at 14:13
















0












0








0








I recently bought a D-Link DCS-930L network webcam which is connected to my WLAN network. It retrieves a IP address via DHCP from DD-WRT based router (a TP-Link TL-WR1043ND), and it is listed under "Active wireless nodes".



The camera is registered to a webservice called "My DLink", which enables the user to access the webcam from the internet (via their webpage or via smartphone apps). This service works, and I can access the camera from outside.



However, when I try to connect from inside my (W)LAN, it says "No route to host". How is that possible?



--



EDIT: I found the answer by myself accidentally by skimming through the IP webcam settings. It turned out that the option Setup > Network Setup > UPnP Port Forwarding was set to Enable. I don't use UPnP in my LAN, and it is disabled on my router.



I don't understand how the enabled UPnP on the webcam could cause troubles, when there were no other devices supporting UPnP. Has anybody an explanation for this?










share|improve this question
















I recently bought a D-Link DCS-930L network webcam which is connected to my WLAN network. It retrieves a IP address via DHCP from DD-WRT based router (a TP-Link TL-WR1043ND), and it is listed under "Active wireless nodes".



The camera is registered to a webservice called "My DLink", which enables the user to access the webcam from the internet (via their webpage or via smartphone apps). This service works, and I can access the camera from outside.



However, when I try to connect from inside my (W)LAN, it says "No route to host". How is that possible?



--



EDIT: I found the answer by myself accidentally by skimming through the IP webcam settings. It turned out that the option Setup > Network Setup > UPnP Port Forwarding was set to Enable. I don't use UPnP in my LAN, and it is disabled on my router.



I don't understand how the enabled UPnP on the webcam could cause troubles, when there were no other devices supporting UPnP. Has anybody an explanation for this?







networking wireless-networking router dd-wrt upnp






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Feb 3 '14 at 22:58







abaumg

















asked Feb 2 '14 at 13:38









abaumgabaumg

17817




17817













  • No route to host is a reply from your router, not the Webcam itself. Can you ping the IP address? Can you scan it with nmap? Does it appear as one of the DHCP clients in your DD-WRT router page (under Status -> LAN, active clients)?

    – MariusMatutiae
    Feb 2 '14 at 13:51













  • No, I can't ping it, but it does appear as well as DHCP client as WLAN client. imac:~ andreas$ ping 192.168.1.30 PING 192.168.1.30 (192.168.1.30): 56 data bytes Request timeout for icmp_seq 0 Request timeout for icmp_seq 1 Request timeout for icmp_seq 2 Request timeout for icmp_seq 3 Request timeout for icmp_seq 4 ^C --- 192.168.1.30 ping statistics --- 6 packets transmitted, 0 packets received, 100.0% packet loss

    – abaumg
    Feb 2 '14 at 13:54













  • I can however ssh into my router and ping it successfully from there: root@lonkero:~# ping 192.168.1.30 PING 192.168.1.30 (192.168.1.30): 56 data bytes 64 bytes from 192.168.1.30: seq=0 ttl=64 time=1.592 ms 64 bytes from 192.168.1.30: seq=1 ttl=64 time=1.658 ms 64 bytes from 192.168.1.30: seq=2 ttl=64 time=2.857 ms 64 bytes from 192.168.1.30: seq=3 ttl=64 time=1.645 ms --- 192.168.1.30 ping statistics --- 4 packets transmitted, 4 packets received, 0% packet loss round-trip min/avg/max = 1.592/1.938/2.857 ms

    – abaumg
    Feb 2 '14 at 13:55













  • Can you post your routing table?

    – MariusMatutiae
    Feb 2 '14 at 14:06











  • 192.168.100.1 * 255.255.255.255 UH 0 0 0 ppp0 10.100.10.2 * 255.255.255.255 UH 0 0 0 tun0 192.168.1.0 * 255.255.255.0 U 0 0 0 br0 10.100.10.0 10.100.10.2 255.255.255.0 UG 0 0 0 tun0 169.254.0.0 * 255.255.0.0 U 0 0 0 br0 127.0.0.0 * 255.0.0.0 U 0 0 0 lo default 192.168.100.1 0.0.0.0 UG 0 0 0 ppp0

    – abaumg
    Feb 2 '14 at 14:13





















  • No route to host is a reply from your router, not the Webcam itself. Can you ping the IP address? Can you scan it with nmap? Does it appear as one of the DHCP clients in your DD-WRT router page (under Status -> LAN, active clients)?

    – MariusMatutiae
    Feb 2 '14 at 13:51













  • No, I can't ping it, but it does appear as well as DHCP client as WLAN client. imac:~ andreas$ ping 192.168.1.30 PING 192.168.1.30 (192.168.1.30): 56 data bytes Request timeout for icmp_seq 0 Request timeout for icmp_seq 1 Request timeout for icmp_seq 2 Request timeout for icmp_seq 3 Request timeout for icmp_seq 4 ^C --- 192.168.1.30 ping statistics --- 6 packets transmitted, 0 packets received, 100.0% packet loss

    – abaumg
    Feb 2 '14 at 13:54













  • I can however ssh into my router and ping it successfully from there: root@lonkero:~# ping 192.168.1.30 PING 192.168.1.30 (192.168.1.30): 56 data bytes 64 bytes from 192.168.1.30: seq=0 ttl=64 time=1.592 ms 64 bytes from 192.168.1.30: seq=1 ttl=64 time=1.658 ms 64 bytes from 192.168.1.30: seq=2 ttl=64 time=2.857 ms 64 bytes from 192.168.1.30: seq=3 ttl=64 time=1.645 ms --- 192.168.1.30 ping statistics --- 4 packets transmitted, 4 packets received, 0% packet loss round-trip min/avg/max = 1.592/1.938/2.857 ms

    – abaumg
    Feb 2 '14 at 13:55













  • Can you post your routing table?

    – MariusMatutiae
    Feb 2 '14 at 14:06











  • 192.168.100.1 * 255.255.255.255 UH 0 0 0 ppp0 10.100.10.2 * 255.255.255.255 UH 0 0 0 tun0 192.168.1.0 * 255.255.255.0 U 0 0 0 br0 10.100.10.0 10.100.10.2 255.255.255.0 UG 0 0 0 tun0 169.254.0.0 * 255.255.0.0 U 0 0 0 br0 127.0.0.0 * 255.0.0.0 U 0 0 0 lo default 192.168.100.1 0.0.0.0 UG 0 0 0 ppp0

    – abaumg
    Feb 2 '14 at 14:13



















No route to host is a reply from your router, not the Webcam itself. Can you ping the IP address? Can you scan it with nmap? Does it appear as one of the DHCP clients in your DD-WRT router page (under Status -> LAN, active clients)?

– MariusMatutiae
Feb 2 '14 at 13:51







No route to host is a reply from your router, not the Webcam itself. Can you ping the IP address? Can you scan it with nmap? Does it appear as one of the DHCP clients in your DD-WRT router page (under Status -> LAN, active clients)?

– MariusMatutiae
Feb 2 '14 at 13:51















No, I can't ping it, but it does appear as well as DHCP client as WLAN client. imac:~ andreas$ ping 192.168.1.30 PING 192.168.1.30 (192.168.1.30): 56 data bytes Request timeout for icmp_seq 0 Request timeout for icmp_seq 1 Request timeout for icmp_seq 2 Request timeout for icmp_seq 3 Request timeout for icmp_seq 4 ^C --- 192.168.1.30 ping statistics --- 6 packets transmitted, 0 packets received, 100.0% packet loss

– abaumg
Feb 2 '14 at 13:54







No, I can't ping it, but it does appear as well as DHCP client as WLAN client. imac:~ andreas$ ping 192.168.1.30 PING 192.168.1.30 (192.168.1.30): 56 data bytes Request timeout for icmp_seq 0 Request timeout for icmp_seq 1 Request timeout for icmp_seq 2 Request timeout for icmp_seq 3 Request timeout for icmp_seq 4 ^C --- 192.168.1.30 ping statistics --- 6 packets transmitted, 0 packets received, 100.0% packet loss

– abaumg
Feb 2 '14 at 13:54















I can however ssh into my router and ping it successfully from there: root@lonkero:~# ping 192.168.1.30 PING 192.168.1.30 (192.168.1.30): 56 data bytes 64 bytes from 192.168.1.30: seq=0 ttl=64 time=1.592 ms 64 bytes from 192.168.1.30: seq=1 ttl=64 time=1.658 ms 64 bytes from 192.168.1.30: seq=2 ttl=64 time=2.857 ms 64 bytes from 192.168.1.30: seq=3 ttl=64 time=1.645 ms --- 192.168.1.30 ping statistics --- 4 packets transmitted, 4 packets received, 0% packet loss round-trip min/avg/max = 1.592/1.938/2.857 ms

– abaumg
Feb 2 '14 at 13:55







I can however ssh into my router and ping it successfully from there: root@lonkero:~# ping 192.168.1.30 PING 192.168.1.30 (192.168.1.30): 56 data bytes 64 bytes from 192.168.1.30: seq=0 ttl=64 time=1.592 ms 64 bytes from 192.168.1.30: seq=1 ttl=64 time=1.658 ms 64 bytes from 192.168.1.30: seq=2 ttl=64 time=2.857 ms 64 bytes from 192.168.1.30: seq=3 ttl=64 time=1.645 ms --- 192.168.1.30 ping statistics --- 4 packets transmitted, 4 packets received, 0% packet loss round-trip min/avg/max = 1.592/1.938/2.857 ms

– abaumg
Feb 2 '14 at 13:55















Can you post your routing table?

– MariusMatutiae
Feb 2 '14 at 14:06





Can you post your routing table?

– MariusMatutiae
Feb 2 '14 at 14:06













192.168.100.1 * 255.255.255.255 UH 0 0 0 ppp0 10.100.10.2 * 255.255.255.255 UH 0 0 0 tun0 192.168.1.0 * 255.255.255.0 U 0 0 0 br0 10.100.10.0 10.100.10.2 255.255.255.0 UG 0 0 0 tun0 169.254.0.0 * 255.255.0.0 U 0 0 0 br0 127.0.0.0 * 255.0.0.0 U 0 0 0 lo default 192.168.100.1 0.0.0.0 UG 0 0 0 ppp0

– abaumg
Feb 2 '14 at 14:13







192.168.100.1 * 255.255.255.255 UH 0 0 0 ppp0 10.100.10.2 * 255.255.255.255 UH 0 0 0 tun0 192.168.1.0 * 255.255.255.0 U 0 0 0 br0 10.100.10.0 10.100.10.2 255.255.255.0 UG 0 0 0 tun0 169.254.0.0 * 255.255.0.0 U 0 0 0 br0 127.0.0.0 * 255.0.0.0 U 0 0 0 lo default 192.168.100.1 0.0.0.0 UG 0 0 0 ppp0

– abaumg
Feb 2 '14 at 14:13












2 Answers
2






active

oldest

votes


















0














Most of all, you have a very confused routing table. You may wish to erase all of your routes, and let eth0 acquire a new address via DHCP: Then I bet you will see your camera. In other words: I believe the problem lies with your routing table, not with your camera.



Try the follwoing: as sudo,



   service network-manager stop
ifconfig br0 down
brctl delbr br0
ifconfig eth0 down
ifconfig eth0 up
dhclient eth0
ping -c3 192.168.1.30


I think it will work now. In any case, all of the changes above disappear upon reboot.






share|improve this answer































    0














    It's possible that you turned on ap isolation in the basic wireless settings of dd-wrt.






    share|improve this answer
























    • AP Isolation is disabled.

      – abaumg
      Feb 2 '14 at 21:43











    • What range of ip addresses do you have assigned to your vpn and dhcp pools?

      – user295510
      Feb 3 '14 at 14:24











    • Also, what is the ip of the machine that is failing to ping the webcam?

      – user295510
      Feb 3 '14 at 14:44











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    2 Answers
    2






    active

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    2 Answers
    2






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    0














    Most of all, you have a very confused routing table. You may wish to erase all of your routes, and let eth0 acquire a new address via DHCP: Then I bet you will see your camera. In other words: I believe the problem lies with your routing table, not with your camera.



    Try the follwoing: as sudo,



       service network-manager stop
    ifconfig br0 down
    brctl delbr br0
    ifconfig eth0 down
    ifconfig eth0 up
    dhclient eth0
    ping -c3 192.168.1.30


    I think it will work now. In any case, all of the changes above disappear upon reboot.






    share|improve this answer




























      0














      Most of all, you have a very confused routing table. You may wish to erase all of your routes, and let eth0 acquire a new address via DHCP: Then I bet you will see your camera. In other words: I believe the problem lies with your routing table, not with your camera.



      Try the follwoing: as sudo,



         service network-manager stop
      ifconfig br0 down
      brctl delbr br0
      ifconfig eth0 down
      ifconfig eth0 up
      dhclient eth0
      ping -c3 192.168.1.30


      I think it will work now. In any case, all of the changes above disappear upon reboot.






      share|improve this answer


























        0












        0








        0







        Most of all, you have a very confused routing table. You may wish to erase all of your routes, and let eth0 acquire a new address via DHCP: Then I bet you will see your camera. In other words: I believe the problem lies with your routing table, not with your camera.



        Try the follwoing: as sudo,



           service network-manager stop
        ifconfig br0 down
        brctl delbr br0
        ifconfig eth0 down
        ifconfig eth0 up
        dhclient eth0
        ping -c3 192.168.1.30


        I think it will work now. In any case, all of the changes above disappear upon reboot.






        share|improve this answer













        Most of all, you have a very confused routing table. You may wish to erase all of your routes, and let eth0 acquire a new address via DHCP: Then I bet you will see your camera. In other words: I believe the problem lies with your routing table, not with your camera.



        Try the follwoing: as sudo,



           service network-manager stop
        ifconfig br0 down
        brctl delbr br0
        ifconfig eth0 down
        ifconfig eth0 up
        dhclient eth0
        ping -c3 192.168.1.30


        I think it will work now. In any case, all of the changes above disappear upon reboot.







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Feb 2 '14 at 14:25









        MariusMatutiaeMariusMatutiae

        38.5k953100




        38.5k953100

























            0














            It's possible that you turned on ap isolation in the basic wireless settings of dd-wrt.






            share|improve this answer
























            • AP Isolation is disabled.

              – abaumg
              Feb 2 '14 at 21:43











            • What range of ip addresses do you have assigned to your vpn and dhcp pools?

              – user295510
              Feb 3 '14 at 14:24











            • Also, what is the ip of the machine that is failing to ping the webcam?

              – user295510
              Feb 3 '14 at 14:44
















            0














            It's possible that you turned on ap isolation in the basic wireless settings of dd-wrt.






            share|improve this answer
























            • AP Isolation is disabled.

              – abaumg
              Feb 2 '14 at 21:43











            • What range of ip addresses do you have assigned to your vpn and dhcp pools?

              – user295510
              Feb 3 '14 at 14:24











            • Also, what is the ip of the machine that is failing to ping the webcam?

              – user295510
              Feb 3 '14 at 14:44














            0












            0








            0







            It's possible that you turned on ap isolation in the basic wireless settings of dd-wrt.






            share|improve this answer













            It's possible that you turned on ap isolation in the basic wireless settings of dd-wrt.







            share|improve this answer












            share|improve this answer



            share|improve this answer










            answered Feb 2 '14 at 14:35









            user295510user295510

            1




            1













            • AP Isolation is disabled.

              – abaumg
              Feb 2 '14 at 21:43











            • What range of ip addresses do you have assigned to your vpn and dhcp pools?

              – user295510
              Feb 3 '14 at 14:24











            • Also, what is the ip of the machine that is failing to ping the webcam?

              – user295510
              Feb 3 '14 at 14:44



















            • AP Isolation is disabled.

              – abaumg
              Feb 2 '14 at 21:43











            • What range of ip addresses do you have assigned to your vpn and dhcp pools?

              – user295510
              Feb 3 '14 at 14:24











            • Also, what is the ip of the machine that is failing to ping the webcam?

              – user295510
              Feb 3 '14 at 14:44

















            AP Isolation is disabled.

            – abaumg
            Feb 2 '14 at 21:43





            AP Isolation is disabled.

            – abaumg
            Feb 2 '14 at 21:43













            What range of ip addresses do you have assigned to your vpn and dhcp pools?

            – user295510
            Feb 3 '14 at 14:24





            What range of ip addresses do you have assigned to your vpn and dhcp pools?

            – user295510
            Feb 3 '14 at 14:24













            Also, what is the ip of the machine that is failing to ping the webcam?

            – user295510
            Feb 3 '14 at 14:44





            Also, what is the ip of the machine that is failing to ping the webcam?

            – user295510
            Feb 3 '14 at 14:44


















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            Tribalistas

            Listed building