[pptp-server] Duplicate IP addresses (remote and local)?

Cowles, Steve Steve at SteveCowles.com
Mon Dec 4 14:27:07 CST 2000


> -----Original Message-----
> From: Brian Aust [mailto:baust at healthdec.com]
> Sent: Sunday, December 03, 2000 5:16 PM
> To: 'kend at flyingtoasters.net'; pptp-server at lists.schulte.org
> Subject: RE: [pptp-server] Duplicate IP addresses (remote and local)?
> 
> 
> Hi Ken,
> 
> Well i can think of two things...  well actually three, to check.
> 
>   1.  in my pptpd.conf file, my localip is ONLY the IP 
>       address of the poptop server, it isn't a range.
>   2.  do you have a DNS and DHCP server listed in your 
>       options file? There should be a line like: ms-wins 10.1.1.2
>       (or whatever the IP addy of your WINS server is)

Just for clarification, Windows Internet Name Service (WINS) has nothing to
do with Domain Name Service (DNS) or even Dynamic Host Configuration
Protocol (DHCP). 

Although, if your running Microsoft's DNS server <groan>, WINS can be
configured to update the MS DNS server zone files dynamically. i.e. When a
MS client (Win9x, NT, W2K) registers with a WINS server, the MS DNS server
will create two DNS records. 
1) An "A" (address) record for the host. 
2) An Inverse Address Arpa Record (PTR) for the host. (reverse lookup)

This is actually pretty cool (and works), the MS Netbios name is registered
with the MS DNS server. i.e. You can "ping" the client by its Netbios Name,
not some arbitrary FQDN like dhcp1.mydomain.com, dhcp2.mydomain.com, etc...

WINS - In /etc/ppp/options, this option is specified with "ms-wins"
parameter.

DNS - In /etc/ppp/options, this option is specified with the "ms-dns"
parameter.

DHCP - Although I wish Poptop could be configured to use a DHCP scope to set
and configure remote PPTP clients... to this date, I'm not aware of this
capability in PopTop. If I'm wrong, please show me how. I will reconfigure
my PopTop server in a minute.

Its been awhile, but I believe Microsoft's PPTP server can be configured to
assign remote IP's from a predefined DHCP scope.

Steve Cowles



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