Solved

port forwarding on netgear DGND3700v2

Posted on 2013-01-15
6
2,299 Views
Last Modified: 2013-02-18
Hi All,

I am having major trouble port forwarding on the DGND3700v2 router. I have never used this router before and just wondering if anyone knows how to do this sucessfully, everything I have tried just does not work.

All I want to do is set up remote desktop connections to the 5 or so computers I have behind the router. Any ideas what I'm doing wrong?
0
Comment
Question by:ezekuel
  • 3
  • 2
6 Comments
 
LVL 10

Expert Comment

by:bigbigpig
ID: 38781494
I've never used that particular router but port forwarding should be pretty straight forward.  Follow this link - it's to the manual of that router.  Look on page 105.  When you're setting it up on your router look for the service name RDP or Remote Desktop.  If it's not there you can create a custom service for TCP 3389.

http://www.downloads.netgear.com/files/GDC/DGND3700V2/DGND3700v2_UM_09Mar12.pdf

Now, you're probably going to have problems with the 5 computers.  If you have 5 computers listening on port 3389 and all 5 are behind a single public IP then it's not going to work.  Well, 1 of the 5 will work.  You can port forward to a single IP on the LAN for that port.  You either need multiple public IP's or you need to have the 5 computers all listening on different ports.
0
 
LVL 2

Author Comment

by:ezekuel
ID: 38781512
Thanks. How would I make the computers listen on different ports and set up the ports for them on port forwarding
0
 
LVL 23

Expert Comment

by:tailoreddigital
ID: 38781520
You could set the router to forward an external (incoming) port to a particular computer.  

For example,

TCP port 12000 point to 192.168.1.5
               12001 to 192.168.1.6
               12002 to 192.168.1.7       etc.....

So when remoting in,   add the port,   i.e,

xxx.xxx.xxx.xxx:12001   would be the "computer" in the Remote Desktop Connection input

If your ip is dynamic, you can use a service like dyndns.com to use a hostname instead of a IP that will change.

So then for your "computer" you can use something like    hostname.dyndns.org:12001    this would remote into  192.168.1.6  (as above)
0
Enabling OSINT in Activity Based Intelligence

Activity based intelligence (ABI) requires access to all available sources of data. Recorded Future allows analysts to observe structured data on the open, deep, and dark web.

 
LVL 23

Accepted Solution

by:
tailoreddigital earned 500 total points
ID: 38781524
If you want to change the computer's listen port,

http://www.techrepublic.com/blog/datacenter/changing-the-rdp-listening-port-on-windows-server/1939


You'll need to reboot after the change.   Plus you'll need to open this port in the system firewall.
0
 
LVL 23

Expert Comment

by:tailoreddigital
ID: 38781525
i use this method for RDP for an office of 25 and at my home of 3.  It's a great method, works well.
0
 
LVL 10

Expert Comment

by:bigbigpig
ID: 38781526
If you have the need to access multiple computers or resources inside your network from the Internet then you should consider a VPN.  

But here's how to change the RDP port number.  Leave one of them at default port, which is 3389, then change the other 4 each to a different port.  3390, 3391, 3392, 3393 should work if nothing else is binding to those ports.

From Microsoft (http://support.microsoft.com/kb/306759):
Start Registry Editor.
Locate and then click the following registry subkey:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\TerminalServer\WinStations\RDP-Tcp\PortNumber
On the Edit menu, click Modify, and then click Decimal.
Type the new port number, and then click OK.
Quit Registry Editor.
Restart the computer.

Then do the port forwarding steps from the manual linked above.  Create 5 entries; one for each of the ports.  Make them match your LAN computers IP's.  So if your LAN computer 192.168.0.50 (or whatever) is changed to port 3390 then set up your port forwarding on the Netgear so 3390 goes to 192.168.0.50.

A couple other considerations... make sure your public IP is static or you're using dynamic DNS.  Make sure your LAN computers have static IP's.  Make sure your LAN computers are set to not sleep or go into standby.  That'll kill the network connection.
0

Featured Post

Top 6 Sources for Identifying Threat Actor TTPs

Understanding your enemy is essential. These six sources will help you identify the most popular threat actor tactics, techniques, and procedures (TTPs).

Join & Write a Comment

Suggested Solutions

Title # Comments Views Activity
DNS on-premise and on-cloud 15 69
PORT NUMBER FOR FIOS ROUTER 5 40
VLAN question 7 45
Resource cost of NAT vs routing 3 26
Getting hacked is no longer a matter or "if you get hacked" — the 2016 cyber threat landscape is now titled "when you get hacked." When it happens — will you be proactive, or reactive?
Even if you have implemented a Mobile Device Management solution company wide, it is a good idea to make sure you are taking into account all of the major risks to your electronic protected health information (ePHI).
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
In this tutorial you'll learn about bandwidth monitoring with flows and packet sniffing with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're interested in additional methods for monitoring bandwidt…

759 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

21 Experts available now in Live!

Get 1:1 Help Now