gre vpn PPTP 47/ip ipnat

["Luke Renn" <lrenn_(_at_)_etci_(_dot_)_com>]

I'm screwed i think :)

We just moved our linux server/router at work to a new OpenBSD box and
got a T1.  So before the switch we had our linux box redirect 47/ip
(****GRE:not udp or tcp port 47****) to a windows box to do PPTP vpns.
Anyway, linux had a special patch for this. ipnat only understand tcp and
udp.  if there was a way to say which ip protocol you want, then the port,
it could be done.  Example:

rdr 207.103.201.142 -P 47 port 47 -> 192.168.243.45 port 47
rdr 207.103.201.142 -P 6 port 1723 -> 192.168.243.45 port 1723

tcp might be 7 though.

or .. much nicer


rdr 207.103.201.142 port 47 -> 192.168.243.45 port 47 gre



I need this to work with OpenBSD if i have to hack the kernel myself :)
Anyone think about this yet?  Anyone got any suggestions?  Anyone want to
work on it with me :)

Thanks again guys,

Luke