[pptp-server] NAT on firewall?

[Yan Seiner]

I'm a little confused - 192. will route.

I have pptpd running on my firewall with no problems.

I am not port forwarding, but I am masqing.

I am definitely firewalling.

Everything lives in harmony.

--Yan

Adam Haeder wrote:
> 
> This question isn't about pptpd per se, but since it relates to the
> network setup, I thought I would ask it.
> I've currently got a Sparc machine running RedHat 6.0 with kernel 2.2.5
> doing ip forwarding/masquerading for about 30 users. It also does some
> ip forwarding from valid internet IPs through to non-routable
> (192.168.x.x) IPs. My questions is this: in the current PoPToP HOWTO,
> they talk about setting up a firewall and a pptpd server behind it on a
> non-routable ip. The author then goes through setting up NAT using
> natadm to be able to forward GRE info through the firewall to the
> internal pptpd server, since it's the only ip redirector I know of that
> can handle non-tcp or udp traffic.
> My question is this: can I use my existing masq box as this firewall?
> I'm concerned about trying to use both ip forwarding/masq and nat on the
> same box. Can it be done? I'm thinking the solution to my problem right
> now is to setup a separate firewall system that does nat and then setup
> an internal pptpd server. I was planning on keeping this solution down
> to one server, but it looks like I might not be able to.
> Any advice is appreciated!
> 
> --
> Adam Haeder
> Technical Coordinator, AIM Institute
> adamh at omaha.org
> 
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