Versucher hat geschrieben:as some devices like iPad 1 ,etc seem not to be able to speak IPv6
This is indeed a problem.
BTW: The CrApple hardware actually DOES support IPv6, but only when they are on a WiFi/LAN connection but not when they are connected through a cellular network.
Even this isn't a limitation of CrApple in this case but by the German cellphone providers:
None of them is capable of offering IPv6 connectivity, which is quite amusing as T-Mobile does offer IPv6 ... on their US cellular network.
Versucher hat geschrieben: - traying to setup a tunnel (tunnelbroker) got this : "IP is not ICMP pingable. Please make sure ICMP is not blocked..." The IP4 address is of course not under my control (my connection is DS-Lite-Tunnel , IPv4 über DS-Lite), the public IPv4 being the UM AFTR-Gateway
A 6in4 or SixXS tunnel is meant to up
grade existing 'IPv4 only' lines to also support IPv6, not in order to maintain IPv4 connectivity on lines that are already capable of IPv6.
Versucher hat geschrieben:2. do you know if a VPN provider (e.g. witopia or other ) can offer a bi-directional tunnel at a reasable price
"Reasonable" is a terminus which offers a wide range of interpretation ...
However, I discourage the use of such VPN/tunnel solutions for IPv4 connectivity as they are comparable hard to set up (correctly) using the hardware provided by Unitymedia.
The main problem is that VPN/tunnel solutions are pre-configured for virtual private
networking, while such services tunnel internet (rather than other closed LANs) to the inside of your LAN.
Thus you would need to take some extra effort to ensure their tunnel endpoint is protected by some kind of firewall to prevent your endpoint machine or even whole LAN being exposed to attacks from the outside.
The far better solution would be ...
Versucher hat geschrieben:4. assuming i switch to Business what do i need to do to get access to my server .
The business contracts include full IPv4 connectivity, including incoming connections from the outside world.
Business contracts without telephony
services get you a plain 'bridge' (aka modem)
to which you will need to connect your own router
in order to have firewalling, while together with business contracts with telephony
services you get a Fritz!Box 6360
If you order business+static IPv4
, you again have to add your own router
(because the Fritz!Box will be configured to bridge
all traffic for your public IPv4 to one of the attached devices) while with a dynamic IPv4
you will use the provided Fritz!Box 6360 as router
Any of these combinations will give you full IPv4 connectivity incl. silly port forwardings and stuff[TM].
Versucher hat geschrieben:Is the tunnelbroker still necessary
It is not necessary (for IPv4) but recommended to also
get IPv6 (Because Unitymedia is too stupid to offer IPv4 and IPv6 at the same time/on the same contract).
The tunnel would allow you to connect IPv6 servers (Like those on lines matching your current one) directly but has no influence at all for IPv4 connectivity.
Versucher hat geschrieben:or do I get a fixed IPv4 and can do the usual port forwarding i used to do in the past (with my existing domain/DDNS).
Business contracts let you chose for free between
- one dynamic IPv4 address
- one static IPv4 address
or for an additional monthly fee of 10 EUR
- five static IPv4 addresses
So you decide.