[Openswan Users] ipsec & multicast over gre

[Michael Jurney]

Paul Wouters wrote:

> On Sat, 1 Oct 2005, Lelio Parisi wrote:
>
>> ...you can incapsulate an ipsec tunnel inside the gre one.
>
>
> That is the right way and yes it can be done with openswan.
>

I'm trying to rebroadcast local traffic across an ipsec tunnel via 
iptables, with the following rule:

iptables -t nat -I PREROUTING -i $INSIDE_IFACE -m addrtype --dst-type 
broadcast -j DNAT --to-destination $REMOTE_BROADCAST

Broadcast packets on the inside network are being caught by the iptables 
rules, but they're not entering the tunnel (no ESP packets to the remote 
gateway are generated).  Is there documentation online detailing how to 
do this sort of thing with GRE?

-- 
Michael D. Jurney
Sysadmin, DataSynapse
mikej at datasynapse.com
p: 212.842.8860

View the DataSynapse email disclaimer here:
<http://www.datasynapse.com/legal/emailprivacy.jsp>