I always have people asking me for a dummies guide to IPtables, and in all reality their isn’t one it takes time, reading, and understanding to use it properly. If IPtables is used properly and effectively it can save you hundreds of dollars in networking equipment and time. Here is a collection of several IPtables how-to’s and links I have collected for people through the years.

• Basic IPtables Commands
• Using iptables to limit bruteforce attacks
• Configuring IPtables on ubuntu server
• Basic IPtables Configuration example

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Certain linksys routers won’t work with xbox live here is a list of common questions/problems to tell if this post will help you:

• My XBOX LIVE won’t connect and I have a linksys router.
• Why won’t my linksys router connect to xbox live?
• I just got a new linksys router and my XBOX LIVE won’t work!

Not really, well sort of! But I did include two alternate ways to fix your issue near the bottom of the post.

Version 2.02.7
This firmware version is not Xbox Live Compatible by default with UPNP

Note The UPnP implementation on the Linksys WRT54g with firmware 2.02.7 has been discovered to prevent users from being able to connect to Xbox Live.

Other versions may be affected as well. You can fix it by disabling UPNP!

Option 1 disable UPNP to allow XBOX LIVE to work on linksys routers!

1. Access your wrt54gs router by navigating to 192.168.1.1 on your internet browser or whatever ip you have your router setup on.
2. Login.
3. Click on the Administration tab.
4. Click on Management sub-tab.
5. You’ll find the UPnP radio buttons at the bottom, Choose Disable
6. Save your settings
7. Reboot your router or it wont work!

Option 2 Put your XBOX 360 into a DMZ

So here we go!

1. Set a static ip on your xbox (call ms for support…………..lol)
2. Access your wrt54gs router by navigating to 192.168.1.1 on your internet browser or whatever ip you have your router setup on.
3. Login
4. Select the security tab located on the top menu bar of the web interface.
5. Towards the bottom of the screen you should she DMZ. In the pull down box select Enable and in the DMZ Host IP address 192.168.1.____ inter the IP address of the computer you wish to open up to the internet. (This should be the static IP address of your website)
6. Save changes (apply)
7. Reboot Router! (think of it like hot sauce)

Steps should be similar for most firmware versions, plus the steps should be in your documentation for your router.

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