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Old 21st December 2008
godfrank godfrank is offline
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Join Date: Jun 2008
Posts: 14
Default PPTP Server, no internet connectivity (routing between interfaces?)

Hello folks!
I've been trying to setup a VPN server on my FreeBSD 7.0 box for a while now. As of today, I can login successfully to it from a Windows machine but I cannot get the Internet connectivity to work. FYI, I am using poptop for a "relatively secure" PPTP VPN that will be used mostly for my iPhone. My network's router is 192.168.0.1 and the machine on which the PPTP server is running is 192.168.0.25.

My theory is that I should do a bridge between the tun0 interface and my rl0 [CODE]interface but, being the networking neophyte that I am, I am not sure how to do so and if it really is what I need.

Here is a line I get when I log on to my VPN from a Windows machine:
Code:
/var/log/ppp.log
ppp[83612]: tun0: Warning: ff02:3::/32: Change route failed: errno: Network is unreachable
Here are my rl0 and tun0 interfaces:
Code:
$ ifconfig rl0
rl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=8<VLAN_MTU>
        ether 00:50:fc:33:0d:5e
        inet 192.168.0.25 netmask 0xffffff00 broadcast 192.168.0.255
        media: Ethernet autoselect (100baseTX <full-duplex>)
        status: active
$ ifconfig tun0
tun0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> metric 0 mtu 1398
        inet 192.168.0.25 --> 192.168.0.205 netmask 0xffffff00
        Opened by PID 83612
$ cat /usr/local/etc/pptpd.conf
Code:
speed 115200

localip 192.168.0.25
remoteip 192.168.0.201-210

pidfile /var/run/pptpd.pid
# cat /etc/ppp/ppp.conf
Code:
pptp:
  set ifaddr 192.168.0.25 192.168.0.201-192.168.0.210 255.255.255.0
 set dns 192.168.0.1
  set nbns 192.168.0.1
 disable pap
 disable utmp
 disable passwdauth
 #enable chap     # MPPE Requirest chap81/MSChapV2
 enable MSChapV2
 enable mppe      # Enable Encrptions
 set log Phase Chat LCP IPCP CCP tun command  # Debugging
 set timeout 0   # Don't drop the connection
 defaultroute 192.168.0.1
 #
 # Force 128 bit encryption with a key change every packet
 # MacOSX only works with stateless connections and the are more
 # secure anyway - just less efficient.
 set mppe 128 stateless

 # Disable compression - freebsd clients try to use it but it breaks mppe
 disable deflate pred1
 deny deflate pred1
 set server /var/run/pptp_ppp_%d "" 0700
 accept dns              # Enable clients to request dns details
 disable ipv6cp          # Disable ipv6
 enable proxy            # Enable proxying addresses on the local net for clients


Thanks a lot!

Last edited by godfrank; 21st December 2008 at 03:47 PM.
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