Could DirectTv server be causing my Double Nat Issues?

     Could DirectTv server be causing my Double Nat Issues? I am using an older Motorola Modem, then my Airport Extreme, then my airport express in bridge mode. The DirectTv server seems to be plugged in before the Airportr Express so I am pretty sure it is no getting any info from the Airport Extreme but I am not sure.
     The modem is model Motorola SurfBoard 5101U. I do not beleive it has router capabilities.
     The problem seems to only come up when I am using my Mac Book Pro (Mavericks). Usually only when trying to download large files. It does not effect my ipads or iphones. Very strange.
    I've been racking my brain on this for a year.
Thanks,
Stephen

So, I run into some similar problems. I used to have the HD-DVR pre-Genie, which is when I started seeing some of the problems that my AirPort Utility was reporting. I hardwire every connection where possible. I currently run out of my AirPort TC into a switch. From the switch I go out to the rest of the house including an Apple TV and the new Genie. Along with multiple other wall ports, etc.
It seems to me that whenever I have my Genie hardwired in - for extended period of times my network will "crash" and I will receive an error of Double NAT. Once I unplug the DirecTV from the network, everything goes back to working fine. This ocurred on the old HD-DVR as well as the Genie.
I would welcome any ideas or suggestions.
I am running a Motorola SURFboard S86141, New AirPort Extreme TC, and a Netgear 8-Port Switch.
Thank you in advance for your help!!
Billy Trimble

Similar Messages

Why do I lose internet connection when I put airport extreme into bridge mode to correct Double NAT issue

I reset my airport extreme router the other day because I was too lazy to reset the password on my private network.
I have been reading the advice found on apple support communities and wide web, but the solutions do not solve any problems and often create new ones.
I'm regretting because everything was working just fine.
But I remember having this double nat error when I first set it up a few months back, but now I cannot resolve it.
I would live with the yellow light, but it seems that this double nat error is preventing my playstation 3 from connecting to the airport extreme.
When I put the aiport extreme into bridge mode, I loose all my wireless networks, even when I reboot the airport extreme and the modem.
I try rebooting the modem, then the airport. and vice versa. No internet.
I switch back to NAT/DCHP and the internet works fine on apple devices, but not the playstation 3, and I have the 1 Double NAT error.
I have a plain stock Motorolla modem and I can dial in and see settings (although nothing about NAT). I didn't see where to see them.
I tried setting the DHCP only but it said it didn't like the settings. is there a stock range i could be using?

I have a plain stock Motorolla modem and I can dial in and see settings (although nothing about NAT). I didn't see where to see them.
Exact model .. motorola make adsl, cable and probably wireless modems.. with some modems and some modem router.. we need exact info. What kind of broadband do you have?
I would note.. some of the motorola cable modems seem to have issues with the apple routers. If you are about due to change modems.. now is a good time.. not another motorola.
If the modem is a straight cable modem, the AE must be in router mode.. but you need to power down the cable modem. maybe for 20min so the new router can pick up the IP address.
You cannot use DHCP alone.. the ISP do not give you a block of IP addresses.
You cannot use bridge with a pure modem.. you will find it works.. but only to one device.
The only reason you get double NAT is the failure to pick up the public IP.
Give the info required..
If you have trouble, I need the actual IP of the modem. the actual IP of the AE WAN port when plugged in. Screenshots are good.

Airport Internet Sharing and Double Nat Issue on the road

The Airport express is a very handy little piece of hardware that is particularly easy to pack in a luggage and carry along for those of us that are spending lots of time out of the office and home.
So here is the scenario when I travel and check in into an overseas hotel: I got two iphones, one local network, one my home network, and a Mac Book Pro, and soon, [when it finally ships], an iPad.
That makes it at least 3 MAC addresses in one room, and if i have any visiting colleagues to pack up a presentation, I will have more.
Usually hotels in Asia are well equipped with ethernet points in every room. The problem comes when I want to allow all my gears to connect to the internet.
I can use the Mac Book to share its ethernet connection while tethered to the plug, which not only turns it into an unlikely desktop, but also do not champion stability when it goes in stand by or sleeps and at times it even mixes up which is the access point to the net. Therefore this does not seem to be the best solution.
I can put the AE in bridge mode and plug it straight to the ethernet. But most hotels internet access are designed to charge per MAC address, so every time the router assigns via DHCP an IP to one of my gears it requires to accept new charges for that gear, even if they are all in the same room. This definitely does not seem right either.
Now if I configure the AE to share a public IP address and force it to ignore the double NAT warning, the AE light turns green but the internet sharing does not seem to work at all.
My two questions are:
1) Why can't the AE be configured like the Mac Book to have a simple "Internet Sharing" protocol that will be always live and not going to sleep or stand by like the laptop [As the AE is design to be always online as a wireless connection].
2) is there any way to make that "Share a public IP - *** double NAT" work?
Any feedback is welcome.
Thanks. M

Hi Bob,
thanks for your reply. Yes the only way to work it out on a typical hotel set up is to adopt the bridge mode and sometime the do waive your extra logs in. But I am not always so lucky and I often need to come up with less optimal solution.
This is a bit disappointing when you a have a AE in your luggage and you can't use it properly.
Yet my Mac can work the problem out effortlessly by just "Sharing a internet connection" with the only major limitation of being physically connected to the Ethernet cable.
Why can't the Airport Express do the same thing? Basically the AE could share the internet connection like the Mac Book, i guess introducing a secondary layer of NAT after the Hotel modem/router NAT setup [which is what the MAC Book is doing].
If AE can't do that at all then I guess soon we will just end up shelving it.
I wonder if this is an actual hardware limitation, MAC Book can wire TCP/IP flow to different sources on a double nat and AE can't, or this is just a software limitation and Apple could fix it with a firmware upgrade.
Any thoughts on this?

HT3477 Double NAT issue?

What if the AE Gen 5 is connected to an existing DHCP server? ... how do you set up the AE to allow a Guest Network?
Thanks,
Neil

The Guest Network can only be enabled when the AirPort Extreme is configured to provide DHCP and NAT services.
If you already have another router on the network "upstream" from the AirPort Extreme, then the AirPort should be configured to operate in Bridge Mode to work correctly on the network. Unfortunately, the Guest Network feature cannot be enabled when the AirPort is in Bridge Mode. It's a Catch 22.
I am not recommending that you do this, but if you want to try to "break the rules" and run two devices both providing routing services on the network, you can try things out to see if they might work.
Assuming that you don't have DHCP IP address conflicts, you will always have a Double NAT condition when you do this. Double NAT will slow communications a bit and may produce other unpredictable results on the network. This "error" can range from a minor annoyance to a deal killer depending on what you are trying to accomplish and what other devices you might have on the network.
AirPort Utility does allow you to "ignore" the error, so the AirPort will display a green light even though the Double NAT condition exists.
If you decide to try this, let us know how things are working for you.

Creating Two Networks with Different Securities and Double NAT Error

I have a Time Capsule which is connected to my cable modem and an AirPort Extreme connected to my Time Capsule via the WAN port. I configured the AEBS to create a wireless network using WEP (I have a few devices that don't support WPA) so I can use two different wireless securities. The AEBS flashes the amber light and once I connect to its network, the AirPort Utility states that it has a "Double NAT" issue. I used my iPhone 5 to connect to the AEBS network and I can access the Internet just fine.
Is this issue one that can be resolved? If so, how? Or do I ignore the issue? If I ignore, what are the implications?
Thanks!

You need to configure the AEBS in Bridge Mode to eliminate the Double NAT error, which is slowing down your connection...and may likely cause other issues depending on how the network is configured.
If you do not know how to do this, we need to know what operating system you are using on the computer that is being used to configure and setup the AEBS.

Status: Double NAT

I have a comcast router connected to the airport extreme then on to airport express.
Comcast just changed their router to bridge only. My airport extreme is flashing yellow w/ Double NAT status. The airport express is fine.
Any suggestions on how to fix the Double NAT issue?
Thanks in advance

As LaPastenague has already noted, you have a modem/router, also known as a gateway device which is providing DHCP and NAT services.
Since the AirPort is also providing NAT services when it is setup as a router, you can easily see where the Double NAT is coming from.
So, one of the "techs" did not even know what type of device you had. That is gross incompetence.
The other two "techs" might have tried, but neither of them was successful setting up the SMC as a simple bridge mode modem......yet they told you they were successful. It just may not be possible to do this with the device that you have.
A simple modem......it will have only one Ethernet port on it......is what you need. It will be in bridge mode by default. When you connect the AirPort to the simple modem, your network will function correctly without errors.
Something like this, for example......http://www.zoomtel.com/products/5341J.html........which is an approved modem for use with Comcast.
Not sure where you want to go from here, but we'll try to help if you have further questions.

Trying to setup Time Capsule, how do i fix status that says "double NAT", preventing wifi from working?

In setting up Time Capsule, it won't connect to wifi. In the status pop up of the Time Capsule under the Airport Utility it says "Double NAT". I dont' know how to fix that.
Thanks.

This is one goofy modem that acts as if it is a router, so that is why the Double NAT issue is appearing.
There are two ways to tackle this:
1) If everything seems to be working OK, you have the option to click to "Ignore" the Double NAT error in AirPort Utility and the Status light will turn green.
Double NAT is usually not too serious of an error on a simple home network, but it will be a deal killer if you have an online gaming console and want to play games interactively on the Internet.
Your connection will slow slightly because of the multiple NAT firewall layers the signal must pass through, but you will likely not notice this in normal browsing, email, etc.
2) Reconfigure the modem to act in "bridge mode" only and then change the method that the Time Capsule uses to connecf from Ethernet to PPPoE service. There will be no NAT errors this way and this is what AT&T recommends....see link below.....but we are talking about some major surgery here.
http://www.att.com/esupport/article.jsp?sid=KB401764&cv=801,902&title=Connecting +a+non-AT%26T+provided+router+to+your+AT%26T+Internet+connection#fbid=kfca5LRlzv D

Question # 2--how to avoid the DHCP conflict issue, double NAT, etc.

I'm having a tough day wasting hours working on the TC. It once worked fine for a year. Now, I'm struggling to maintain a connection at all.
I may be doing this wrong but I'm using two screens to manage this.
1. preferences/network
2. the TC internet connection settings
I had written all of my settings that worked on a piece of paper. Now that I've had to reset everything earlier today by plugging/unplugging stuff per Comcast orders, I'm wondering if all of my previous settings are worthless.
Reading possible solutions on here I tried to set the connection sharing to bridge to avoid the double NAT issue. This resulted in a message that more than one computer had the same IP address and I couldn't access the internet so I went back to sharing the public IP address like I had before.
I had, and I'm trying to have now, IPv4 configured manually. When I use settings like I had before, it tells me the DHCP range is invalid. If I increase the 3rd digit/group of numbers to change the range, it re-boots but I'm unable to get to the internet.
I don't know what I'm doing wrong. Any help?

Thanks to you both for responding. I had actually already read that Networking 3.0 document ... and since options 1-3 were not allowing the QuickVPN to work and options 4+ resulted in lost FIOS TV services I wasn't pursuing any of those options. Out of all of them it sounds like Bridging the Westell would be closest to what I want (enabling the Cisco router to acquire the public IP address). But I'm not willing to sacrifice my TV functions so even that option is a non-starter for me.
Over the past two weeks I have spent some 30 or 40 hours researching and then tinkering with the configuration on the routers (and VPN client software -- QuickVPN and shrewsoft VPN client). So I just invested about 15 minutes in downloading the free TeamViewer software. And although I didn't want to go the "3rd party software" route I'm actually glad I tried it. I now have a working VPN connection via TeamViewer, and through the VPN am able to use windows remote desktop just fine -- which was my goal all along. I'm concerned about the 3rd party software / security ... but at least this works. And I can always disable the TeamViewer Service when I'm not using the software.

IChat Screen Sharing causes Time Capsule to have "Double NAT"

I have a weird situation, wondering if all you super-network geniuses could offer an opinion...
My current setup:
-DSL Modem hooked up to a Time Capsule.
-Time Capsule in Ethernet Mode & "Share Public IP Address: NAT & DHCP Enabled."
-Time Capsule has a wireless 5Gz "N-Only" network.
-MacBook Pro, PC and an Airport Express connected to N Network wirelessly.
-Airport Express "Extends network" via ethernet cable to Slingbox & TiVo (via switch.)
-Airport Extreme hard-wired to Time Capsule.
-Airport Extreme in Bridge Mode.
-Airport Extreme has a wireless "G" network & USB Printer.
-Airport Extreme network for "iPhones & G computer."
-Only Port Mapping is for slingbox, ports 5001,5001.
O.k. Everything works PERFECTLY! Except when I start a "Screen Sharing" session in iChat AV.
When I click "Ask to share xxx's screen" It says "Waiting on xxx" and then Airport Utility pops up, saying that the Time Capsule has an error - "Double NAT" and I'm off the internet. All I have to do is select "Restart Time Capsule" and after a reboot, I'm back in business, and all is well again. I can screen share, chat, etc. However, if I try and start "Screen Sharing" again, same thing - Double NAT.
Do I need to enable a Port Mapping for iChat?
Any suggestions or help would be greatly appreciated. I thought I finally had the network thing down, but this one little thing keeps making me reset my router. (Doesn't seem like the Apple way.)
Thanks.

I have the Time Capsule set up as the DHCP server, distributing a shared IP address.
The Express is set up to "Join and existing network."
I only have 1 Extreme and it is set to "Bridge Mode."
The Time Capsule is the router hooked directly to the DSL modem. It is in "Ethernet" mode, and I'm not quite sure how to check the little DSL modem's settings.
It's so strange, that only this one little request, "Ask to share xxx's screen" does this error occur.
Looking at more settings on the Time Capsule, under NAT settings, I do NOT have the "Enable default host at:" option checked, and the "Enable NAT Port Mapping Protocol" IS checked. Under Port Mappings, 5001,5001 is the only item for Slingbox.

Will 'Double NAT' cause any problems for me?

Hi there
I have just received a Netgear VMDG280 Cable/ DSL modem/wireless router from Virgin Broadband in the UK and I plugged it into my Airport Extreme 802.11n base station. The internet works fine but the amber light remains flashing, warning me of a Double Nat error.
I can easily select for my Airport to 'ignore' this Double NAT error message, but am worried that by ignoring this warning, I might compromise something important in my whole broadband set up. Could it also reduce security etc?
Essentially, Im not doing anything fancy with my wireless network, besides running a Macbook Pro, Iphone, Ipad and friend's laptops etc.
With Double NAT existing on my network, will this affect the service I will receive in any way? Or can I just put it out of my mind?
Many thanks
Dan

+If I operate Airport Extreme in Bridge mode, will that mean that the technical quality and security of the Airport Extreme base will be bypassed in favour of the Netgear?+
No
+if the Netgear is classed as the lesser device of the two, shouldnt the Airport Extreme handle the more important tasks rather than being a passive 'bridge'+
The Netgear is already configured as the "main" router on your network. It is what we call a "gateway", a combination modem and router on the same chassis. The AirPort Extreme does not include a modem, so if you wanted to make it the "main" router on your network, you would need to purchase a separate stand alone modem and then set up the Netgear as a "bridge". That gets really complicated.
If you are seeing no adverse effects of the Double NAT, you can choose to "ignore" the message and the light will turn green. If you want to do this, open AirPort Utility, click Manual Setup, and then click on the word "Status" on the summary page. Click "ignore" regarding the Double NAT.
Networking rules specify that you should try to avoid the Double NAT situation if possible. On a simple home network this is not usually a serious error, but it can slowdown internet browsing. If you plan to add a gaming console and want to play online games with other people, then the Double NAT will probably prevent you from doing so.
My suggestion to place the AirPort Extreme in bridge mode was just that...a suggestion. If you are happy with the performance of your network now and simply want to get the light to turn green, you can choose to "ignore" the message.

DNS server with double NAT

Hi All,
We are in a process of migrating to a new ISP.
With the new ISP, we have no options but double NAT (one in Cisco router and one in Firewall).
In the test environment for the new ISP (double NAT) a desktop behind the firewall getting a dynamic IP address (which includes DNS server 192.168.0.3) resolved an external web site too long, but when I changed the DNS ip address to 8.8.8.8 it resolved quickly
as normal.
In the current live production every thing works as expected.
Any help/ idea would be appreciated.
Cheers

I would agree with Christopher.
You can also make sure that your DNS servers do not have public DNS IPs set in their IP settings. Instead, public DNS IPs should be set as forwarders. Also, make sure that you use your ISP DNS servers instead of other public DNS servers for external DNS
resolution.
For troubleshooting DNS lookups, you can use NSlookup with debug mode for more details. I have started a Wiki about that here: http://social.technet.microsoft.com/wiki/contents/articles/29184.nslookup-for-beginners.aspx
This posting is provided AS IS with no warranties or guarantees , and confers no rights.
Ahmed MALEK
My Website Link
My Linkedin Profile
My MVP Profile

Sprint Airave Causes "double NAT"

I connected a Sprint Airave between my Cox Cable modem and my Apple Airport Express. Now I have a flashing amber light and a "double NAT" status. Is there a downside to having a "double NAT" status. If so, how do I fix it? Bridge mode destabilized internet. Other idea?

The Sprint Airave is actually working as a NAT router.
If you read some of the info about these boxes.. eg http://www.pocketables.com/2013/04/sprint-airave-2-5-four-and-a-half-months-in.h tml
They can be pretty terrible. And the suggested layout is probably wrong. You would be better having the
cablemodem--Express--Sprint
So that the Express can be the main router for the network.
If you are stuck with double NAT.. it is very much non-ideal.. you might find it works for most things, then a web page won't load properly or you cannot connect to game.. most interactive stuff on the internet will not work via a double NAT. You can browse and do email because they are not interactive.

No DNS and Double NAT

Hello, I've recently encountered a very frustrating bug in my system that I could use some help troubleshooting. I've read several similar posts, some are resolved while others are not, however none of the resolutions have worked for my situation. Here it goes:
I have an old macbook pro, a new macbook air, a white macbook and 2 iPhone 4s's all connected to the internet via WiFi through an AirPort Extreme. The AE is connected to a cable modem which has internet service through Cablevision in NY. There is also an AT&T Microcell hooked up to the AE to boost my cell signal. All of this equipment has been working flawlessly together for a long time. Until recently. It could have started after an update, there have been several lately on all of the equipment including the firmware in the AE. Anyway, I'll be connected without any issues - all lights green and happy - when suddenly, the internet will drop off and the AirPort Utility will pop up and warn me that:
1) On the "internet" icon, it will say "disconnected"
2) On the AE icon, it says "No DNS server and Double NAT"
After a few minutes and nothing done on my part, the lights turn green, the internet reconnects and all is well again.
This happens frequently and is really beaching a nuisance. Due to the frequency of the disconnection, I can no longer download a large file, update, or anything. Streaming video is impossible.
So far, I have tried bridge mode and cycled the power in the order recommended to no avail. When I do that, the AE turns green, but the internet says "not connected". I have also read that there might be too many IP addresses which is not sitting well with my ISP, so I disconnected everything including unplugging the Microcell. Lastly, there are no other wireless phones or devises in the house. All to no avail.
I should also mention that this began occurring on my Time Capsule, which I replaced with the AE in an attempt to fix this issue.
Any help would be greatly appreciated.
Joe

Sounds very similar to what I've been trouble shooting for 2 months now, only I have DSL from AT&T and I don't see the Double NAT warning. My last post on the problem is here.
My only emergency solution for getting by day to day on the internet is to unplug the AE and connect one Mac directly to the DSL modem. There's no shared connection or WiFi. I looked at hosting WiFi from the Mac, but the only security available with that is WEP which isn't considered secure. Even with this set up, I think (seat of the pants) that there are quality of service problems.
I've replaced the Airport Extreme with 2 different new units and the DSL modem with a new unit to no avail. The Genius Bar and Apple phone support couldn't solve this, nor have 2 calls to AT&T support and one visit from an AT&T repairman.
I would like to know how to better test or quantify the poor quality of connection that seems to be the problem.

Double-NAT when iChat "Screen Sharing"

I have a weird situation, wondering if all you super-network geniuses could offer an opinion...
My current setup:
-DSL Modem hooked up to a Time Capsule.
-Time Capsule in Ethernet Mode & "Share Public IP Address: NAT & DHCP Enabled."
-Time Capsule has a wireless 5Gz "N-Only" network.
-2PC's, and an Airport Express connected to N Network wirelessly.
-Airport Express "Extends network" via ethernet cable to Slingbox & TiVo (via switch.)
-Airport Extreme wired to Time Capsule.
-Airport Extreme in Bridge Mode.
-Airport Extreme has a wireless "G" network & USB Printer.
-Airport Extreme network for "iPhones & G computer."
-Only Port Mapping is for slingbox, ports 5001,5001.
O.k. Everything works PERFECTLY! Except when I start a "Screen Sharing" session in iChat AV.
When I click "Ask to share xxx's screen" It says "Waiting on xxx" and then Airport Utility pops up, saying that the Time Capsule has an error - "Double NAT" and I'm off the internet. All I have to do is select "Restart Time Capsule" and after a reboot, I'm back in business, and all is well again. I can screen share, chat, etc. However, if I try and start "Screen Sharing" again, same thing - Double NAT.
Do I need to enable a Port Mapping for iChat?
Any suggestions or help would be greatly appreciated. I thought I finally had the network thing down, but this one little thing keeps making me reset my router. (Doesn't seem like the Apple way.)
Thanks.

I have the Time Capsule set up as the DHCP server, distributing a shared IP address.
The Express is set up to "Join and existing network."
I only have 1 Extreme and it is set to "Bridge Mode."
The Time Capsule is the router hooked directly to the DSL modem. It is in "Ethernet" mode, and I'm not quite sure how to check the little DSL modem's settings.
It's so strange, that only this one little request, "Ask to share xxx's screen" does this error occur.
Looking at more settings on the Time Capsule, under NAT settings, I do NOT have the "Enable default host at:" option checked, and the "Enable NAT Port Mapping Protocol" IS checked. Under Port Mappings, 5001,5001 is the only item for Slingbox.

Time Capsule Double NAT error

Hello,
I would really like some advice on double NAT and bridge mode before I respond to an error message on my mothers macbook/ TC settings. She recently had some extremely high uploads (approx 10GB that ate up all of her allowance) at times when she was not at her computer and so I reset her TC and changed the WEP password to something really obscure to try and prevent anyone from hacking in to her wifi network.
She has a basic set up: Cable modem connected directly to the Time capsule with no other airports connected to the network. She uses a standard 2010 13"Macbook to access the internet over wifi.
Twice in the last week (once before she noticed the massive uploads and today at about the same time as her internet service says she had a 150MB download that she did not have) she has received an error that says:
"Double NAT
This Airport wireless device has a private IP address on its Ethernet WAN port. It is connected to a device or network that is using Network Address Translation (NAT) to provide private IP addresses. You should change your Airport wireless device from using DCHP and NAT to bridge mode"
My question is - will following these instructions fix her download problems or make it worse?
Also, is there any other way I can prevent someone from hacking into her network.
All advice welcome
Thanks
Emma

Having a double NAT, indicates that TWO devices on your network are performing Network Address Translation, I am not a complete expert on this or anything but it's not that big an issue, you probably just need to turn off NAT on your Mom's modem.
But this definitely IS NOT causing her issue of using up all her Data allowance with her ISP. Having a double NAT just complicates the network and can cause problems with certain apps. But It will NOT increase data use.
You should use WPA2 as the type of network encryption.
You can use Mac Address Filtering as some kind of added protection.
You could have a Non Broadcast SSID but this again is really only trivial protection, WPA2 with a STRONG password is your best bet.
Hope this helps,
Anything else I can do just let me know,
PS you should check the DHCP client list or attached client list in Airport settings to see if someone else is using your Mom's bandwidth.
Regards,
John
Message was edited by: JohnAlanWoods - Forgot to include the word 'NOT'

Could DirectTv server be causing my Double Nat Issues?

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