You can also go to https://www.grc.com/x/ne.dll?bh0bkyd2 and then click
on proceed and then select common ports or all service ports.  


The site will do a scan and let you know the results.  



Jim



On Tue, 2003-11-25 at 11:08, Alan Dayley wrote:
> I have setup my at home email server for external access on an odd, high 
> port number.  It has been working well with dynamic DNS from my domain 
> provider and everything.  Then, it suddenly stopped answering and I can 
> get into it, even with the specific IP.
> 
> A brief check of all configuration and operation this morning showed 
> that all is supposedly well on my end.  Is there a way I can tell if my 
> ISP is suddenly blocking the ports?
> 
> Alan
> 
> 
> ---------------------------------------------------
> PLUG-discuss mailing list - PLUG-discuss@lists.plug.phoenix.az.us
> To subscribe, unsubscribe, or to change  you mail settings:
> http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss