* Hadmut Danisch:
at least here in Germany Internet providers tend to
do and not to do what they want.
- Some cut off their clients every 24 hours (DSL)
This happens on the sub-IP layer and hasn't got to do much with ISPs.
- Some block or slowdown particular tcp ports
to get rid of peer-to-peer file sharing
You get what you pay for.
- Some redirect the first web access to any site
to their own to force you to read their ads
- Very few support multicast. When I asked my
own provider, they didn't even know what this is.
(They said 'no, because they don't support Linux'.)
You can't get reliable multicast service anywhere in the world.
People tend to switch it off if it threatens to impact unicast
traffic. It's not possible to run production services over multicast
across the Internet at the moment, at least not without a fallback to
- IPv6? Huh? What's that?
It's not a real problem to get native IPv6 over ADSL or SDSL.
- At least one large provider blocks port 25 to certain IP
addresses in order to force you to use the provider's
Which one is that?
The case you are writing about does *not* block 25/TCP on the TCP/IP
It's true that certain extremely cheap products don't offer that much
Internet or Service. These products are marketed aggressively and are
usually sold at a loss. Nobody forces you to buy them.
Current mail filters: many dial-up/DSL/cable modem hosts, and the
following domains: bigpond.com, di-ve.com, fuorissimo.com, hotmail.com,
jumpy.it, libero.it, netscape.net, postino.it, simplesnet.pt, spymac.com,
tiscali.co.uk, tiscali.cz, tiscali.it, voila.fr, yahoo.com.
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