I've seen several problems here with getting xbox live to work properly over the router, but none have answered my problem.
Originally I forwarded the ports manually and this worked perfectly fine for about 2 years. Now the NAT status always comes up strict when the xbox 360 its turned on. For some reason my previous port forwarding doesn't appear in the list of forwarded ports anymore, and if I try to forward port 3074 it says there is a conflict with another device (however this port is not being forwarded anywhere else (checked the UPnP) so I don't see how this can be the case). UPnP doesn't help as it says its forwarding the port, but it doesn't make a difference to the NAT status. I also tried setting the xbox 360 as the DMZ server, and this only worked temporarily. At the moment the only way to get the NAT status open, is to turn on the xbox 360, then access the router settings through another device, and then if the 360 is currently set as the DMZ server turn this off, or visa versa, if the 360 is not currently set as the DMZ server I have to set it as the DMZ sever, either way this always works. The next time I turn the 360 on however it will go back to being strict and I have to repeat the above (which doesn't make any sense as all I'm doing is activating DMZ if its off, or deactivating it if it was already on, surely if its going to work its going to work on the same settings as last time, not the opposite).
Any ideas as to what could be causing this? Like I said it worked perfectly fine at first when the ports were forwarded, but about a month ago its become impossible to manually forward port 3074.
I have worked with tons of these netgears and I have learned that the netgear has a hard time with the port forwards. There is a couple things you could try to slove this
1. Upgrade the firmware. Netgear has upgrades on there site for every router and you should be able to up grade the firmware.
2. You must do a reserve ip address in the netgear. Setup the xbox to that ip address then do the port forwarding and it will work
3. You must have these ports forwared to that ip address
The following ports must be available for Xbox Live to operate correctly:
TCP 3074 http://support.microsoft.com/kb/908874
As for the Dmz This is desgined to take you outside of the router firewall which Is ok if you want to setup. It did make a difference on mine
Its ok, I think it may have sorted itself now. I tried reseting to factory defaults and afterwards I was able to forward the ports but it didn't work. I tried turning on UPnP which didn't work, but now a couple of days later the NAT status seems to be open all the time. Not sure why as I didn't change anything between turning UPnP on and it working, but I'm just gonna leave it as it is and hope it stays ok.
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-if your NAt is strict and cannot connect try turning your hub off for 30 seconds then turning it back on if that didnt work. -try resetting your IP address. if that didnt work -take addaptor from xbox to pc out for 30 seconds, then put it back in if that didnt work - try opening thies ports
TCP 53 UDP 53 TCP 80 UDP 88 UDP 3074 TCP 3074
Sometimes depending on the router brand, it's not possible to open your NAT, this simpily becuase some are not specificly designed for Xbox Live purposes. A good example of this is Belkin routers. These brands are most commonly made for Buissness connection servers. If you are experiencing a STRICT/MODERATE Nat with a Belkin router, the chances are you are going to have to deal with it, but that is not 100% of the time. If you've have attempted several techniques to open your Nat and the changes arnt happening, i'd recommend a 'N' powerd Belkin router, the most majority of these routers work 100% perect for Xbox Live, I myself oned one but changed due to a broadband switch.
How do I change the NAT firewall protection? (Open/Moderate/Strict)
Find your IP address number then type it in on your web browser, this will bring up all your switchable options where several options can be changed to your approval. The NAT firewall is one of these options which can be changed. (like I mentioned before, if you own a Belkin router, the chances are even after changing the fireall level, it will turn back to moderate or strict)
Technically the best support you could find for this is either going to be on the official game's forums or on the Steampowered forms (even if you didn't buy the game through Steam) They already have the answers to your questions.
However to give you an idea as to what NAT is and why it shouldn't be affecting you too much: Network Address Translation is a means of taking your 1 "internet" IP and translating it into potentially hundreds of local IPs (usually the 192.168.x.x range)
Usually NAT is configured on the Router, maybe your modem is also acting as a router.
If you disable it then you're using your actual internet IPs given by your Internet Provider, the problem with that is usually you're limited on how many you have (personally my provider gives me 5 internet IPs so I could have 5 routers and hundreds of computers with just those 5 IPs being handed out using NAT)
I played XBL with strict NAT and never had any problems personally, you may be looking in the wrong area for help with your issue.
nat is quite crazy when it comes to the xbox, their are many ways of changing your nat back to open here is the easiest, on network settings on your xbox change the network from manual to automatic or from automatic to manual if you don't know how to make your network from automatic to manual go get a computer with wirless internet connection, *note the next steps i am about to tell you are for xp if you have vista or windows 7 you might figure out what im doing and use the vista or win7 way to pull up the info if you need to know* go to start, connect to wireless connection, support, details. these are the information you need to know write all of them down then type them in on your xbox but when you get to ip address type everything in but the last number and instead of the writen last number place a number one above it like if the last number was 4 the place 5 but if you test network and that does not work make it 6 ect. then your nat will be open again.
First make sure your security type on the router is WEP-Personal. You may need to get the port range for that game or manufacturer. Then enter them in to the gaming tab. This will keep ports open all the time. NAT 2 is acceptable but you want NAT 1. Some internet connections cannot get NAT1.reply if you need further assistance
If your router IS on the list, make sure you have a compatible firmware version (usually the firmware version is written on the router somewhere). If you do not have the proper firmware, you will need to downgrade your firmware (reply to me for instructions on this).
If your router is not on the list, you're outta luck.