26 Jul
2013
26 Jul
'13
4:24 p.m.
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On 26/07/2013 10:05, Heikki Hannikainen wrote:
These days some standard protocols exist to set up
dynamic
multi-point tunnel/VPN networks, such as Cisco's DMVPN
(http://en.wikipedia.org/wiki/Dynamic_Multipoint_Virtual_Private_Network
- - apparently also supported by opennhrp on Linux). Might be fun to
play with those. The "interesting" part
would be trying to make
such a setup co-exist and interconnected with the old amprnet
subnets in an effective way (i.e. not traversing via UCSD every
time).
Usually the places you cannot get IPIP to work are the same places you
won't get GRE (used by DMVPN/OpenNHRP) to work as well. So that brings
us back to square 1.
Very basic NAT boxes handle TCP and UDP but rarely more. (Of course
there are boxes that do more, I know, but those boxes don't have the
issues we are looking to work around :-) ).
Some networks are firewalled and allow access to a few selected ports
only (e.g. 53, 80, 443), so we should be looking for a least 1 tunnel
protocol that can run over TCP or UDP (or even both) using a
configurable port.
73 de Marc, LX1DUC
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