[pptp-server] proxy-arp with PPTP

[tmk]

pretty sure just pppX needs it set. I think that the ppp devices are removed
from memory as soon as they go down, so you'd have to set that setting in
the ip-up script or something to have it around.

Keep in mind that proxy arp doesnt solve ipx routing problems, since ipx
really does need to be routed. You cant put a dialup device (ie ppp0) into
an existing ipx network, it has to be in its own net (at least the way the
software is currently) You can put an IP client on the same IP net as
existing interfaces however.

Kevin
----- Original Message -----
From: Eric Stratte <estradey at pullman.com>
To: <pptp-server at lists.schulte.org>
Sent: Monday, November 08, 1999 8:51 PM
Subject: Re: [pptp-server] proxy-arp with PPTP


> I think I might have answered my own question below, but it makes me
wonder
> what the difference between ARP routing rules and IPCHAINS is?
>
> I had proxy_arp set to 1 for pppx, but the local eth0 that I am trying to
> route over had its proxy_arp set to 0.  If I want to have the pppx and
eth1
> all appear on the same subnet and talk to each other, do I need proxy_arp
> set to 1 for eth1?  Will this handle the broadcast packets, since the
below
> firewall rules don't seem to.(I added a forward rule for 192.168.5.255 to
> pppx)
>
> None of my gaming buddies are around to try this at the moment so I
thought
> I'd throw it up here.  If this is true, it might make a good FAQ topic,
> although perhaps more appropriate for PPP.
>
> Eric
>
> Eric Stratte wrote:
>
> > I've gotten it to work mostly, with lots of help from tmk -- Thanks!
> >
> > I think ARP may be broken on my setup.  I still get NOARP on the ppp0
> > ifconfig.
> > I have the arp --set ...etc. in ip-up.local and I have done echo
> > 1>/proc/net.../proxy_arp
> >
> > But,  I have setup the folowing IPCHAINS rules that correctly forward
> > packets
> >
> > :input ACCEPT
> > :forward DENY
> > :output ACCEPT
> > ipchains -A forward -s 192.168.5.0/24  -i eth0 -j ACCEPT forward any ppp
> > subnet traffic to the local nic/net
> > ipchains -A forward  -d ! 192.168.5.0/24 -i eth1 -j MASQ handle outbound
> > internet traffic
> > ipchains -A forward  -d 192.168.5.64/26 -i ppp0 -j ACCEPT send stuff out
> > to the ppp interfaces
> >  .
> > .
> > last line repeated for ppp1, ppp2, etc.
> >
> > Now this allows everyone to appear on the 192.168.5.0 subnet, but
> > broadcast packets don't seem to make it all the way through...to all
> > ends...?
> > do I need another ipchains line for the broadcast address forward to
> > pppx?(i.e x.x.x.255)
> >
>
>
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