Re: poptop on OpenBSD 5.3

Sun, 04 Aug 2013 21:48:16 -0700 

Hi,

Why not use the embedded package in OpenBSD 5.3 : npppd ??
conf files : /etc/npppd/npppd.conf and npppd-users

Below a link that will help you on :
http://fr.slideshare.net/GiovanniBechis/npppd-easy-vpn-with-openbsd


Cheers,

Wesley

Le 2013-08-05 4:48, Alvaro Mantilla Gimenez a écrit :

Hi,
I am trying to configure poptop on OpenBSD 5.3 without success. I've 
installed the package and configured the files as
the /usr/local/share/doc/pkg-readmes/poptop-1.3.4p4 says but didn't work so I started to change things here and there without success. These are the 
facts:

  /etc/pptpd.conf:

   stimeout 10
   noipparam
   logwtmp
   localip 5.5.5.1
   remoteip 5.5.5.2-102


  /etc/ppp/options:

   lock
   auth
   usehostname
   proxyarp
   +MSChap-V2 mppe-128 mppe-stateless


  /etc/ppp/ppp.conf:

   default:
     set log Phase Chat LCP IPCP CCP tun command
     set speed 115200

   pptp:
     set log phase tun
     enable proxy
     set dns 8.8.8.8 8.8.4.4
     set ifaddr 5.5.5.1 5.5.5.0/0 255.255.255.0
     set timeout 0
     enable chap
     enable MSChapV2


And here the error:

   pptpd[25764]: CTRL: Starting call (launching pppd, opening GRE)
   ppp[14716]: Phase: Using interface: tun0
   ppp[14716]: Phase: deflink: Created in closed state
   ppp[14716]: tun0: Command: default: set speed 115200
   ppp[14716]: tun0: Command: pptp: set log phase tun
   ppp[14716]: tun0: Phase: PPP Started (direct mode).
   ppp[14716]: tun0: Phase: bundle: Establish
   ppp[14716]: tun0: Phase: deflink: closed -> opening
   ppp[14716]: tun0: Phase: deflink: Connected!
   ppp[14716]: tun0: Phase: deflink: opening -> carrier
   ppp[14716]: tun0: Phase: deflink: carrier -> lcp
   ppp[14716]: tun0: Phase: bundle: Authenticate
   ppp[14716]: tun0: Phase: deflink: his = none, mine = CHAP 0x81
   ppp[14716]: tun0: Phase: Chap Output: CHALLENGE
ppp[14716]: tun0: Phase: Chap Input: RESPONSE (49 bytes from testuser) 
   ppp[14716]: tun0: Phase: Chap Output: SUCCESS
   ppp[14716]: tun0: Phase: deflink: lcp -> open
   ppp[14716]: tun0: Phase: bundle: Network
   ppp[14716]: tun0: Phase: deflink: open -> lcp
ppp[14716]: tun0: Warning: ff01:4::: Change route failed: errno: Network 
is unreachable
ppp[14716]: tun0: Warning: ff02:4::: Change route failed: errno: Network 
is unreachable
ppp[14716]: tun0: Warning: ff02:4::: Change route failed: errno: Network 
is unreachable
   ppp[14716]: tun0: Phase: bundle: Terminate
   pptpd[25764]: CTRL: EOF or bad error reading ctrl packet length.
   pptpd[25764]: CTRL: couldn't read packet header (exit)
   pptpd[25764]: CTRL: CTRL read failed
   ppp[14716]: tun0: Phase: deflink: read (0): Got zero bytes
   ppp[14716]: tun0: Phase: deflink: Disconnected!
ppp[14716]: tun0: Phase: deflink: Connect time: 1 secs: 354 octets in, 
364 octets out
   ppp[14716]: tun0: Phase: deflink: 7 packets in, 11 packets out
ppp[14716]: tun0: Phase: total 718 bytes/sec, peak 0 bytes/sec on Sun 
Aug  4 18:23:07 2013
   ppp[14716]: tun0: Phase: deflink: lcp -> closed
   ppp[14716]: tun0: Phase: bundle: Dead
   ppp[14716]: tun0: Phase: PPP Terminated (normal).
pptpd[25764]: CTRL: Client <truncated_ip> control connection finished
So far I think is not an authentication problem (the authentication process seems to be "success") and it is a network related issue. However, I do not 
how to fix it according to the three lines on the output:
ppp[14716]: tun0: Warning: ff01:4::: Change route failed: errno: Network 
is unreachable
ppp[14716]: tun0: Warning: ff02:4::: Change route failed: errno: Network 
is unreachable
ppp[14716]: tun0: Warning: ff02:4::: Change route failed: errno: Network 
is unreachable

 I enabled and applied on sysctl.conf:

  net.inet.gre.allow=1
  net.inet.gre.wccp=1
Also, I added the pf.conf lines needed to allow traffic from 1723 and GRE connections and, to be sure, let all traffic from 5.5.5.0 network pass 
through the firewall on tun0.

 Any help? What I am missing?

 Thanks in advance,

     Alvaro

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