[LARTC] udp broadcast over ipsec

[LARTC] udp broadcast over ipsec

[listuser]

Hello all,

I am configuring a vpn between freeswan and windows 2000. I am following the steps at http://www.jacco2.dds.nl/networking/win2000xp-freeswan.html, to get the VPN up and running. using this I have a ppp tunnel between windows and linux, which is inside a l2tp tunnel which is again encrypted by IPSec. (the url gives the configuration in detail and I have followed it exactly)

Now the windows gets the proper ip and every thing is working as it should except udp brpadcast, which is the reason why I set up the vpn (for a stock exchange, where the quots data comes as b'cast). Since the windows is having an ip in the same network their is no reason why B'cast should not work.

I searched a lot for any pointer but I found only one MS Knowledge Base Article No. 253169 which says that B'cast is not supported in Windows IPSec. Is this the case with Linux also. Is their any thing that can be done to send B'cast also. Any help here will be much appriciated. I am working though Xmas to get this working :(

raj

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Re: [LARTC] udp broadcast over ipsec

[Jason A. Pattie]

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I personally haven't tried setting it up, but I think GRE tunnels may be
what you might try using.  Either IPSec inside GRE or GRE inside IPSec.

GRE tunnels (if I read it correctly) should support broadcasting.

listuser wrote:
> Hello all,
>
> I am configuring a vpn between freeswan and windows 2000. I am
following the steps at
http://www.jacco2.dds.nl/networking/win2000xp-freeswan.html, to get the
VPN up and running. using this I have a ppp tunnel between windows and
linux, which is inside a l2tp tunnel which is again encrypted by IPSec.
(the url gives the configuration in detail and I have followed it exactly)
>
> Now the windows gets the proper ip and every thing is working as it
should except udp brpadcast, which is the reason why I set up the vpn
(for a stock exchange, where the quots data comes as b'cast). Since the
windows is having an ip in the same network their is no reason why
B'cast should not work.
>
> I searched a lot for any pointer but I found only one MS Knowledge
Base Article No. 253169 which says that B'cast is not supported in
Windows IPSec. Is this the case with Linux also. Is their any thing that
can be done to send B'cast also. Any help here will be much appriciated.
I am working though Xmas to get this working :(
>
> raj
>
> _______________________________________________
> LARTC mailing list / LARTC@mailman.ds9a.nl
> http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
>

- --
Jason A. Pattie
pattieja@pcxperience.com
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