static IP & DHCP problems on LAN

[Karl Auer]

On Tue, 2013-03-12 at 10:33 +0000, Adam Funk wrote:
> If I'm inside the LAN, I ssh to the fixed IP address.  If I'm outside,
> I ssh to a no-ip.com hostname, and the NAT router forwards the port to
> the fixed LAN IP address.  (There's no way to do the port forwarding
> on my equipment without a static LAN IP.)

Oh yes there is! :-)

Set up an IPv6 tunnel on your home server, set up another one on your
laptop, and it will be as if NAT had never existed. Don't forget to put
appropriate filters on the tunnel interfaces. Some tunnel providers even
put the tunnel endpoint address in the DNS for you - all of them give
you the same addresses every time, so you can put it in your own DNS or
just in your /etc/hosts file.

No more need for static IPv4 addresses, no more need for port
forwarding, all the ports on your server are available on the same
address... bliss. Might be an idea to set up publickey-only ssh access
though, as otherwise a lot of script-kiddies will be tap, tap, tapping
at your window...

Of course, if you can get native IPv6, that's even better, but sadly a
lot of ISPs have yet to catch up.

Regards, K.

-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Karl Auer (kauer at biplane.com.au)
http://www.biplane.com.au/kauer
http://www.biplane.com.au/blog

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