1. IP Masquerading works, but does not masquerade from within the local network
I've got a box running Redhat 6.1 working as a gateway for our home network.
It's connected to a cable modem, and we've only got one IP address, so it's
doing IP forwarding and masquerading for us.
Now, consider this situation: I've got a webcam running on one of my windows
boxes, whose IP address is 192.168.0.1 (for instance). The webcam is on port
8888, and I've got the linux box set up to forward this port along from
port, say, 9999, using a line much like
ipmasqadm portfw -a -P tcp -L xxx.xxx.xxx.xxx 9999 -R 192.168.0.1 8888
in my rc.local.
This works very well for people connecting in from outside - they'd use a
but if I try and use that URL from inside the local network, it doesn't
connect, I'd have to use:
which is rather annoying as it makes it difficult to test things (I have to
VNC out to work and boot up a browser there)
I'm fairly sure the problem isn't with the webcam software - I've had the
same problem when trying to connected to an apache server inside the network
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