Shoutbox

I went to this site:
https://www.grc.com/x/ne.dll?bh0bkyd2
and tested all ports for stealth status. All ports came up stealth except port 1030 which showed as closed, as shown in the snapshot below. Is this a security threat to my PC? I'm running Norton Internet Security 2008. I tried turning Windows Firewall on in conjunction with NIS2008 and all ports become stealth, but NIS2008 alone leaves 1030 closed. I know that running two firewalls simultaneously is not recommended, so how can I fix this? Thanks.