[CentOS] VPN via PPTP and MPPE
James B. Byrne
ByrneJB at Harte-Lyne.ca
Mon Oct 31 21:27:43 UTC 2005
I have set up a VPN over PPTP on a CentOS server using the
DKMS module rpm dkms-0-2.0.6-3.el4 from
I have configured the pptpd server on Centos4 to use MS_CHAPv2,
128bit encryption and to assign server side and client IP addresses
in the range a.b.c.42-48 and a.b.c.52-58 respectively.
I have also opened the firewall for tcp port 1723 and the GRE
I have configured a Microsoft Win2Kpro client and I can connect and
establish a VPN. However I am missing something because:
1. If I try and connect to a machine on the local network segment
then the VPN channel is not used (this is probably the correct
behaviour but it is not what I want and I need to know how to force
local network paths over an encrypted connection).
2. If I try and connect to a host outside our local network then
the traffic is not routed out through the gateway but it does
travel over the vpn to the local pptdp server.
So, what am I missing in all of this? Are there options for the
pptpd that I need to set for this to work?
I have a similar problem when I connect from outside the local
network segment. The the vpn connects but then I cannot reach any
Any suggestions are welcome. I am a digest subscriber so if you
could copy my email address on your reply then I would be
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James B. Byrne Harte & Lyne Limited
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fax: +1 905 561 0757 Hamilton, Ontario
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