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Re: WNDR3700v4 port forwarding

billkater
Aspirant

WNDR3700v4 port forwarding

I have this router setup and running just fine. Just wanted some clarification on the port forwarding page.

 

Everything I have forwarded I have setup manually. I have clicked the box next to "Use the same port range for Internal port" If I dont click that box, does it mean I can have someone goto port 2000 on the Wan side and be directed to say 1000 on the Wan side?

 

they use the address www.somehere.com:2000 and get redirectd to port 1000 on the wan side?

 Untitled.png

Model: WNDR3700v4|N600 Wireless Dual Band Gigabit Router
Message 1 of 14

Accepted Solutions
TheEther
Guru

Re: WNDR3700v4 port forwarding

Silly me.  192.161.x.x is a public IP address.  Sorry about that.

 

Remapping a port should usually work, but I can think of 2 reasons it won't:

  • The application is embedding the port number in its data.  The port forwarding logic won't be able to change it, so the application will not work.  This is unlikely to happen, but nevertheless possible.
  • There is a bug in the WNDR3700v4 port forwarding logic.

If you don't want to spend too much more time on this, why don't you change the port used by the camera?  For example, set the HTTP port to 2009.  Then you can use a straightforward, www.somewhere.com:2009 to forward to 192.168.1.2:2009, rule on the router.

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Message 12 of 14

All Replies
TheEther
Guru

Re: WNDR3700v4 port forwarding

Yes.

Message 2 of 14
billkater
Aspirant

Re: WNDR3700v4 port forwarding

I have tried this numrous times and have failed each time. Why wont it allow me to forward?

 

WNDR3700v4 Router Firmware Version V1.0.1.32

 

Untitled.pngUntitled1.pngUntitled2.png

Message 3 of 14
TheEther
Guru

Re: WNDR3700v4 port forwarding

What kind of modem is the WNDR3700v4 connected to?

Message 4 of 14
billkater
Aspirant

Re: WNDR3700v4 port forwarding

Surfboard sd6141
Message 5 of 14
TheEther
Guru

Re: WNDR3700v4 port forwarding

If you go to the Advanced Home, does the IP address of the Internet/WAN port look like any of the following?

 

  • 192.168.x.x
  • 172.y.x.x where y between 16 and 31, inclusive
  • 10.x.x.x
  • 100.64.x.x

x can be any number between 0 and 255, inclusive.

Message 6 of 14
billkater
Aspirant

Re: WNDR3700v4 port forwarding

192.161.x.x
Message 7 of 14
TheEther
Guru

Re: WNDR3700v4 port forwarding

Just to be clear, 192.161.x.x is on your WAN/Internet port, right?  It's not your router's LAN IP address, right?

 

If 192.161.x.x is on your WAN/Internet port, then something upstream of your WNDR3700v4 is performing NAT.  Port forwarding is not going to work on your router.

Message 8 of 14
billkater
Aspirant

Re: WNDR3700v4 port forwarding

That is correct. The left box shows Lan port 192.168.1.1

The right box (Internet port) shows 192.161.x.x

If I click on connection status in the right box I get

Ip address 192.161.x.x
Default gateway 192.161.x.1
DHCP server 209.55.0.135
DNS server 4.2.2.2. 4.2.2.3
Message 9 of 14
billkater
Aspirant

Re: WNDR3700v4 port forwarding

I am able to port forward, but only if I use say

www.somewhere.com:2009 to forward to 192.168.1.2:2009

I can't make a incoming Wan port go to a different lan port. Like

www.somewhere.com:2000 to forward to 192.186.1.2:80
Message 10 of 14
billkater
Aspirant

Re: WNDR3700v4 port forwarding

I am using new wave cable as a provider
Message 11 of 14
TheEther
Guru

Re: WNDR3700v4 port forwarding

Silly me.  192.161.x.x is a public IP address.  Sorry about that.

 

Remapping a port should usually work, but I can think of 2 reasons it won't:

  • The application is embedding the port number in its data.  The port forwarding logic won't be able to change it, so the application will not work.  This is unlikely to happen, but nevertheless possible.
  • There is a bug in the WNDR3700v4 port forwarding logic.

If you don't want to spend too much more time on this, why don't you change the port used by the camera?  For example, set the HTTP port to 2009.  Then you can use a straightforward, www.somewhere.com:2009 to forward to 192.168.1.2:2009, rule on the router.

Message 12 of 14
billkater
Aspirant

Re: WNDR3700v4 port forwarding

I have multiple cameras and brands. And the mapping doesn't work with any of them so I don't think it would be the first option. I am more inclined to say it is a netgear bug.

I have changed all the camera ports, you can see this in on of the pictures. It would just be nice if I didn't have to. Make it easier to remember and save a few key strokes when accessing them from the lan side.

Also, if I was to upgrade or down grade the firmware, would it erase all my configuration of the router, port forward rules and such?. I'm sure it will but just wanted to verify
Message 13 of 14
TheEther
Guru

Re: WNDR3700v4 port forwarding

Two things:

  1. You should use https to insure that the video stream is encrypted.
  2. It's not a bad idea to not use the standard https port (i.e. 443).  This will make it harder for hackers to stumble upon your camera, which is effectively exposed to the Internet.

As far as upgrading/downgrading, you may or may not lose your settings.  The odds favor not losing them.  If you notice any weird behavior after installing new firmware, beyond the brokenness of port forward, then you should perform a factory reset.

Message 14 of 14
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