I have such a scheme

static ip "ABC"
forward all ports to
wan IP =
lan ip =
inner dhcp --
forward port 200 to local port 200
device (web cam)
ip =
port = 200

As I understand when user try to reach ABC:200 from internet the route should be:

ABC:200 --> --> -->

But the target host ( is unreachable from internet. Also if I connect to router#1 I can't ping, when reconnect to router#2 internet available and device is reachable.

Seems like there is lack of static route between 2 networks (1.0 and 2.0) but I can't understand the right way where and which route to add to let router#2 with wan be reachable from router#1.


Now the current availability:

connect to router#1 --> works fine.

All port forwarded from router#1 to so I believe that route should be

inetaddr:200 --> -->

But inetaddr:200 not respond and,

inetaddr:8080(to router#2 web admin panel) respond

so seems like can't get access throught router#2 to device.

BUT if use 2 routers in 1 network (lan -- lan instead of lan -- wan) it works, so all ports on router#1 works fine.

Can't understand why router#2 is not accessable from internet.

  • You've pointed out (part) of your problem. Router #1 can't reach router #2, right? Then how can anything else work? – Ryan Babchishin Sep 18 '16 at 2:20
  • Which kind of router you are using? Sounds like there is a firewall running on router #2, blocking all incoming requests on wan port... – chrwhm Sep 18 '16 at 8:44
  • Not being able to ping the router doesn't tell you much on its own. Many devices are misguidedly configured not to answer ping, thinking that would make them invisible to attackers, (It doesn't.) I'd recomend to divide the problem space by connecting a PC to the 192.168.1.* network and check if you can reach (a) the Internet and (b) the webcam on from it. – Tilman Schmidt Sep 18 '16 at 10:38
  • current router is asus AC68U. Router #1 can reach router #2 now but #2 still not accessable from internet. Could you check updates? – dilix Sep 18 '16 at 16:24
  • Is your webcam getting its address via dhcp or static configuration? If the former, are you sure it is .200? If the latter, check that the webcam has as its default route. If you these aren't the problem, can you try port forwarding to a pc in the network, where you have better diagnostics, e.g. a sniffer? – Jeremy Dover Sep 19 '16 at 0:18

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