[pptp-server] Can't Ping a Thing

[chuddles at coin.org]

I've see a few questions come across this list lately similar to this one, 
where the client can't ping (telnet, ftp, etc) anything on the server's LAN.  
I'm experiencing this myself and am still waiting for someone to give a good 
answer here on the list.  Are you guys still having this problem?  Are people 
responding to you privately?

Could one of the PPTP gurus maybe give a quick summary (or point to one on the 
Net) of the internals that happen when a client connects to the server, such 
as what proxyarp does, how a packet gets from a client to a host on the server 
LAN, etc.  I know I need to read up on how PPP works, but a 'crash-course' on 
it would be awesome.  This is such a great product for a simple yet effective 
VPN.

Thanks,
Chris


Quoting Michael Ward <mward at gwtr.com>:

> Hey all -
> I installed redhat linux 7 last week for the first time.  Until now I've
> only known windows.  I'm the IT Manager for a company in Golden, CO and
> want
> to do vpn on a linux box instead of microsoft.
> 
> I have searched archives of this mailing list and found several
> suggestions
> for fixing the problem I'm having.... Call me a little slow, but it
> ain't
> workin'! (more accurately, I'm not workin' it.)
> 
> I've got pptp setup and working (I can connect with win98 clients) and
> have
> not setup encryption yet in an effort to keep it simple while I try to
> get
> basic functionality.
> 
> I have setup Samba and have it running (though I'm not sure if it's
> required, different sources have pointed me in different directions). 
> Samba
> is aware of my WINS server on my internal network (how cool is that? I
> bow
> down to Samba)
> 
> I just read the ipchains how to.  I've tried specifically allowing
> forwarding with a rule pulled from the PoPToP faq.
> 
> The Problem (note capital P): I can not see (browse nor ping) from a
> connected win98 client *anything* on my network.  I have a connection
> but
> can't play.  Where's the fun?
> 
> Questions:
> 1.  What is the total equation to make this whole deal work (clients
> should
> be able to browse to resources on internal servers)?  i.e. Is it pptpd +
> samba + ipchains?  If these three are configured correctly am I set?  Is
> there another piece of the puzzle?  I've read about and tried messing
> around
> with default routes/routing tables to no avail.  What's the skinny on
> the
> 'ideal setup', the basics that have to be there?
> 
> 2.  *If* I leave ipchains with *no rules* set up at all, the default
> policy
> (confirmed with ./ipchains -L) for all rules is ACCEPT.  Should my box
> be
> forwarding all packets in this scenario?  It doesn't, nor can I get it
> to
> forward packets to the private network by using rules pulled from the
> poptop
> faq.
> 
> 3.  Any specifics in implementing the 'ideal setup' are greatly
> appreciated.
> 
> Anyone feeling really generous is invited to give my dumb ass a call. 
> I'm
> sure I could learn a great deal in a few minutes of brain picking.
> 
> Thank you all for your help (couldn't have gotten this far in a week
> without
> it).
> 
> Michael Ward
> mward at gwtr.com
> (303) 215-1100 (m-f 9-5 mst)
> _______________________________________________
> pptp-server maillist  -  pptp-server at lists.schulte.org
> http://lists.schulte.org/mailman/listinfo/pptp-server
> List services provided by www.schulteconsulting.com!
>