Put your router in a DMZ for your PS3's IP address.
Make sure the internet connection settings (if wireless) on your PS3 are up to the NAT 2 standards.
1. Open a command prompt by going to *Start > Run* and typing in "cmd" without quotes.
2. Type "ipconfig/all" without quotes into the command prompt.
3. Go to the manual settings for wireless connections on your PS3 and set the default gateway, and DNS servers that correspond to the command prompt.
4. For IP address, enter anything you want that isn't already in use.
5. In your browser, type in your defaut gateway into the address bar and hit enter.
6. Enter in your login information for your router if it has security.
7. Find the DMZ section and apply the DMZ to the IP you assigned to your PS3 manually.
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