Hi Thor, I'm just posting this to thank you for your help and let you know that it was appreciated and also to help anyone else with a similar problem to see the solution. In order to enable the accounting packets between Chilli and Radius I removed all of the pin holes in my ADSL modem and instead set up a NAT default server pointing to my Radius/WEB/Jabber/POP/SMTP/SMPP/Apache server. This allows all of the trafic arriving to the ADSL modem to pass through to the server and solved the problem. I not sure about the security of this fix so I'm setting up a firewall on the server. This will give me better control over the trafic than the ADSL modem did. Anyway once again thanks a million Thor you pointed me in the right direction and saved me another week with no sleep. Regards, Sean Bracken http://freetextworld.com http://topup.ie http://swarmhotspots.com