[Gnumed-devel] Fwd: RE: 1. port remapping/redirection

[J Busser]

Some replies from my local support / advisor:

RE: 1. port remapping/redirection

>  >From: Karsten Hilbert <address@hidden>
>  >Subject: Re: [Gnumed-devel] Status of Debian gnumed installers,
> >         also port remapping/redirection
>  >What is the rationale of your ISP to allow 8443 but not 443
>  >... you may be able to access your PG server
>  >at home fairly easily since its default port is 5432

> The reason for blocking ports 80 and 443 is ostensibly to prevent
> worms that attack web servers from spreading among their residential
> customers.  However, I believe they have ulterior motives, namely
> pushing their server DSL packages on users.   We think the ISP only
> blocks a few ports ...135,137,139 (Windows NetBIOS/CIFS/etc) and
> 80/443 (HTTP/HTTPS).  They might block 21 (FTP) as well.
> The ISP can either block all ports (crippling their service) or just
> some ports which is obviously what they must do
> ... so we are left with picking non-standard HTTP/HTTPS ports.


>  >and *how* do they allow it ?

Presumably they don't specifically 'allow' it, but only block specific ports.