right from winxp to any firewall i tried in the past all the ports were stealthed when checked with grc.com. but from 2 days none of the ports are stealthed. all the ports are closed and ports 21,53,80,199 and 443 are open. i tried winxp, comodo, online armor, zonealarm and pctools but the same results. all the ports closed and the above 5 ports open. scanned the pc with comodo, avast, avira, superantispyware, malwarebytes, a squared and hitman pro but no malware found. your help needed.
no router. i dont know if this will help or not. for few days like 2 weeks i used xp firewall then before installing zonealarm free i restored the xp firewall to default and disabled it. one more thing. to connect to the net i have an icon on the desktop. i have to double click it and fill the username and password and click on connect. the service provider has given me an ip address to check my account status i.e in internet explorer i have to enter the ip address and hit enter and their site opens. there with username and password i can check my internet usage. what i want to say is that i dont know what they have changed but they have now given me another ip address to check my internet usage and this was 2 days before and from that day only i m having this stealth problem. is this of any help??
So your provider has an “internet network” based on public IP’s.
But if you browse to the internet you go trough a Transparent proxy causing GRC to scan that system and not yours, so the test results are not reliable for your machine.
The changing of IP on your PC has to do with your provider using DHCP to assign a number to you.
On your new PPP Settings they have set a fixed address probably.
Does one of your friends have the same Provider? maybe he can run a scan tool against your PPP IP to see if your stealth or not
Okay probably some misunderstanding here, then it looks like they have fixed your latest IP?
Any way you can’t use GRC to determine if your stealth or not, but are also not directly connected to the internet so there is some form of firewalling done on the ISP side.
To scan your system from an other system within the same provider you can first try to “ping” your IP from the other system, and see if that IP shows up in your firewall logs as blocked.