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 From:  Chris Buechler <cbuechler at gmail dot com>
 Cc:  m0n0wall at lists dot m0n0 dot ch
 Subject:  Re: [m0n0wall] icmp unreach/admin_prohibit error message through IPsec tunnel
 Date:  Sat, 15 Oct 2005 19:04:25 -0400
On 10/15/05, Erik Anderson <erikerik at gmail dot com> wrote:
> I have successfully established an IPsec tunnel between my mono box
> and a Cisco VPN concentrator, however it's not passing any traffic.
> When I try and ping from the mono box through the tunnel, I'm getting
> an "icmp unreach/admin_prohibit" error message in my syslog on the
> mono box.
>

Coming from that Cisco router.  It's dropping your traffic for some
reason, and sending back a message that the traffic is prohibited by
that router.  Problem is on the router.

-Chris