Question about D-Link DSL-2540B ADSL2/2+ MODEM W/4-PORT ETHERNET ROUTER (Retail)

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How to setup a DMZ host on a dsl-2540u router

How do I setup a DMZ host on a dsl-2540u router for VoIP applications. I do not seem to be able to successfully setup vistual servers to open-up the needed ports on the routers (UDP/TCP ports 5060-5061, 16000-17000 and 40000-65525) nor do the STUN server settings on my ATA have an influence on the fact that all calls get dropped after 30 seconds. By the way I use a SIPURA SPA3000 ATA. I guess the DMZ host might be the only hope left.

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  • ivan263 Sep 07, 2009

    Thanks! So far so good! The ATA device is in the DMZ. I can make/receive calls but unfortunately the calls still get dropped after about 30 seconds. It's kind of frustrating as the setup has been working in many different countries over the years. Since I arrived here in Senegal and I set-up the gear to be able to make our calls things just do not want to work the way they used to. I am just wondering were this timeout is coming from. I guess the only way to trace the error is to analyze what going at the SIP protocol level!?

  • ivan263 Sep 07, 2009

    Thanks a lot! It's OK as far as the procedure to put the ATA in the DMZ is concerned, I still have the problem of the call drops after 30 seconds though.

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First connect your router to computer with ethernet cable.
Then access it with following link.
http://192.168.1.1

or
http://192.168.0.1

type user name as "admin" and password as "admin" or blank or "password"

then go to advanced ->DMZ ( Demilitarized Zone)
then add your ip addreses of voip device then save settings and exit
restart router.
Let me know if you need more assistanse.
Thanks.

Posted on Sep 07, 2009

  • You need to reset your router settings to factory defaults.
    press RESET button for 10 seconds it is in back side of router.
    Then again configure it.
    Go to chanel type 4 ,6 and 11 are best channel .
    try 1 by 1.
    Then check.

    Let me know if you need more assistanse.
    Thanks.


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My dlink dsl-2540u router not connect to the internet. Dsl led blinking & sometimes totaly off.


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Which is the latest firmware update for the 2540U Router? http://ftp.dlink.ru/pub/ADSL/DSL-2540U/Firmware/ is the only site I can find with updates on it but I'm not sure which to choose.


Make sure you download the correct firmware for you Hardware.
Usually you can login on your browser to you router and go to the management section to check for firmware updates and select that button and it will download and install the firmware. On some models, you have to go to the D-link web site and look for firmware updates for your router. Always check what you current firmware you have installed and check the version of you router modem hardware (A, B, C etc). Then you can manually download the firmware (usually in a ZIP file), open the zip file, and then using your browser connected to the router look for Update Firmware. You will have to go to where (folder) you saved the downloaded update and select that file. It is recommended that you update using a LAN connection and not a wireless connection.

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Gaming router setup steps:

1. Check for current anti-virus before doing step below.
2.Check firewall allowances or permission to be sure game is allowed
3. Try "port forwarding
4. Check the game / verify ports need for multiplayer gaming.
5. Please forward all ports UDP/ TCP To gaming computers IP address.\
6. Log in to router and place gaming computer in to DMZ.
7. When done gaming disable the game in the DMZ.

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1 Answer

Nat help


Hi jman92592,


Here are some options with that router. Some online games and videoconferencing applications are incompatible with NAT. The WGR614 router is programmed to recognize some of these applications and to work properly with them, but there are other applications that may not function well. In some cases, one local PC can run the application properly if that PC’s IP address is entered as the default in the PORTS Menu. If one local PC acts as a game or videoconferencing host, enter its IP address as the default


To set up an additional computer to play games like Half Life, KALI or Quake III:
1.Click the button of an unused port in the table.
2.Select the game again from the Service Name list.
3.Change the beginning port number in the Start Port box. For these games, use the supplied number in the default listing and add +1 for each additional computer. For example, if you've already configured one computer to play Hexen II (using port 26900), the second computer's port number would be 26901, and the third computer would be 26902.
4.Type the same port number in the End Port box that you typed in the Start Port box.
5.Type the IP address of the additional computer in the Server IP Address box.
6.Click Apply



The WAN Setup options let you configure a DMZ server, change the MTU size and enable the router to respond to a Ping on the WAN port.

Connect Automatically, as Required

  • Normally, this option should be Enabled, so that an Internet connection will be made automatically, whenever Internet-bound traffic is detected. In locations where Internet access is billed by the minute, if this causes high connection costs, you can disable this setting.
  • If disabled, you must connect manually, using the sub-screen accessed from the Router Status menu "Show WAN Status" screen.

•Disable SPI Firewall

  • Normally, this option should be Enabled, so that your local network will be protected by the Stateful Packet Inspection (SPI) firewall included in the WGR614. However, certain communications functions like VPN may require turning off the SPI feature.
Setting Up a Default DMZ Server

  • The default DMZ server feature is helpful when using some online games and videoconferencing applications that are incompatible with NAT. The router is programmed to recognize some of these applications and to work properly with them, but there are other applications that may not function well. In some cases, one local PC can run the application properly if that PC’s IP address is entered as the default DMZ server.
Note: DMZ servers pose a security risk. A computer designated as the default DMZ server loses much of the protection of the firewall, and is exposed to exploits from the Internet. If compromised, the DMZ server can be used to attack your network.

The WAN Setup menu, shown below lets you configure a Default DMZ Server.

  • To assign a computer or server to be a Default DMZ server, follow these steps:
1.Click WAN Setup link on the Advanced section of the main menu.
2.Type the IP address for that server. To remove the default DMZ server, replace the IP address numbers with all zeros.
3.Click Apply.

Good Luck and don't forget to leave a rating.

Thanks Mark


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1 Answer

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hi,

i worked for verizon for two years and I encounter this problem many times,to tell you honestly,its not with you internet connection since if you'll notice,while you are connected to the internet and you make a call or call someone,its interrupted... Obviously,its the phone itslelf,the signal comng from the phone is different from the signal of the internet...thats the reason why you need a modem to convert the signal coming from the phone line to make it work for internet,,,what I suggest is you change the DSL plan from the Dry Loop to the regular dsl with the phone...

thanks and God Bless

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the IP field and select “Enable”. Click “Apply Changes” for the change
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