[CentOS] Port 631 closed, not hidden

[John R Pierce]

Miark wrote:
> I have the firewall turned on my CentOS 5 box, but GRC is
> reporting that 631 is closed instead of stealthed. If the
> firewall isn't configured to allow that, then why might that
> be happening?
>   


that GRC port scanner is not something I'd rely on.     use a shell 
account somewhere, and nmap to portscan yourself.


anyways, WTF 'stealth' ?    ports are SUPPOSED to return "NAK" ...   
IMHO, 'stealth' is complete and total BS, dropping request packets does 
nothing useful.