[Fedora-users-br] VPN PPTP

Ter Dez 5 17:27:33 UTC 2006

Segue o meu arquivo de configuração:
******************************************************************************
[root em fedora ppp]# cat chap-secrets
# Secrets for authentication using CHAP
# client        server  secret                  IP addresses
jasonn         *       jasonn01                   *
******************************************************************************
[root em fedora ppp]# cat pap-secrets
# Secrets for authentication using PAP
# client        server  secret                  IP addresses
jasonn         *       jasonn01                   *
******************************************************************************
[root em fedora ppp]# cat options.pptpd
###############################################################################
# $Id: options.pptpd,v 1.9 2005/08/02 11:33:32 quozl Exp $
#
# Sample Poptop PPP options file /etc/ppp/options.pptpd
# Options used by PPP when a connection arrives from a client.
# This file is pointed to by /etc/pptpd.conf option keyword.
# Changes are effective on the next connection.  See "man pppd".
#
# You are expected to change this file to suit your system.  As
# packaged, it requires PPP 2.4.2 and the kernel MPPE module.
###############################################################################

# Authentication

# Name of the local system for authentication purposes
# (must match the second field in /etc/ppp/chap-secrets entries)
name pptpd

# Strip the domain prefix from the username before authentication.
# (applies if you use pppd with chapms-strip-domain patch)
#chapms-strip-domain

# Encryption
# (There have been multiple versions of PPP with encryption support,
# choose with of the following sections you will use.)

# BSD licensed ppp-2.4.2 upstream with MPPE only, kernel module ppp_mppe.o
# {{{
refuse-pap
refuse-chap
refuse-mschap
# Require the peer to authenticate itself using MS-CHAPv2 [Microsoft
# Challenge Handshake Authentication Protocol, Version 2] authentication.
require-mschap-v2
# Require MPPE 128-bit encryption
# (note that MPPE requires the use of MSCHAP-V2 during authentication)
require-mppe-128
# }}}

# OpenSSL licensed ppp-2.4.1 fork with MPPE only, kernel module mppe.o
# {{{
#-chap
#-chapms
# Require the peer to authenticate itself using MS-CHAPv2 [Microsoft
# Challenge Handshake Authentication Protocol, Version 2] authentication.
#+chapms-v2
# Require MPPE encryption
# (note that MPPE requires the use of MSCHAP-V2 during authentication)
#mppe-40        # enable either 40-bit or 128-bit, not both
#mppe-128
#mppe-stateless
# }}}

# Network and Routing

# If pppd is acting as a server for Microsoft Windows clients, this
# option allows pppd to supply one or two DNS (Domain Name Server)
# addresses to the clients.  The first instance of this option
# specifies the primary DNS address; the second instance (if given)
# specifies the secondary DNS address.
#ms-dns 10.0.0.1
#ms-dns 10.0.0.2

# If pppd is acting as a server for Microsoft Windows or "Samba"
# clients, this option allows pppd to supply one or two WINS (Windows
# Internet Name Services) server addresses to the clients.  The first
# instance of this option specifies the primary WINS address; the
# second instance (if given) specifies the secondary WINS address.
#ms-wins 10.0.0.3
#ms-wins 10.0.0.4

# Add an entry to this system's ARP [Address Resolution Protocol]
# table with the IP address of the peer and the Ethernet address of this
# system.  This will have the effect of making the peer appear to other
# systems to be on the local ethernet.
# (you do not need this if your PPTP server is responsible for routing
# packets to the clients -- James Cameron)
proxyarp

# Logging

# Enable connection debugging facilities.
# (see your syslog configuration for where pppd sends to)
#debug

# Print out all the option values which have been set.
# (often requested by mailing list to verify options)
#dump

# Miscellaneous

# Create a UUCP-style lock file for the pseudo-tty to ensure exclusive
# access.
lock

# Disable BSD-Compress compression
nobsdcomp

# Disable Van Jacobson compression
# (needed on some networks with Windows 9x/ME/XP clients, see posting to
# poptop-server on 14th April 2005 by Pawel Pokrywka and followups,
# http://marc.theaimsgroup.com/?t=111343175400006&r=1&w=2 )
novj
novjccomp

# turn off logging to stderr, since this may be redirected to pptpd,
# which may trigger a loopback
nologfd

# put plugins here
# (putting them higher up may cause them to sent messages to the pty)
******************************************************************************

Esse ae é minha vpn em produção, teste por favor ok?

Outra coisa, lembre-se que no windows 98 é necessário instalar um suporte a
vpn, de uma procurada na net ok?

Abraços.

2006/12/5, Leonardo Korndorfer <leokorndorfer em gmail.com>:
>
> Pois bem...
> Estou tendo um problema com um tunel pptp em um sistema embarado. Seguem
> alguns pedaços de log:
>
> Servidor:
> Dec  5 09:05:48 Digistar daemon.err pppd[12475]: Received bad
> configure-ack:  1a 04 78 00 18 04 78 00
> Dec  5 09:05:51 Digistar daemon.debug pppd[12475]: sent [CCP ConfReq
> id=0x2 <deflate 15> <deflate(old#) 15>]
> Dec  5 09:05:51 Digistar daemon.debug pptpd[12474]: GRE: accepting packet
> #24
> Dec  5 09:05:51 Digistar daemon.debug pptpd[12474]: GRE: accepting packet
> #25
> Dec  5 09:05:51 Digistar daemon.debug pppd[12475]: rcvd [CCP ConfReq
> id=0x9 <deflate 15> <deflate(old#) 15>]
> Dec  5 09:05:51 Digistar daemon.debug pppd[12475]: sent [CCP ConfAck
> id=0x9 <deflate 15> <deflate(old#) 15>]
> Dec  5 09:05:51 Digistar daemon.debug pppd[12475]: rcvd [CCP ConfAck
> id=0x2 <deflate 15> <deflate(old#) 15>]
> Dec  5 09:05:51 Digistar daemon.err pppd[12475]: Received bad
> configure-ack:  1a 04 78 00 18 04 78 00
> Dec  5 09:05:52 Digistar syslog.info -- MARK --
> Dec  5 09:05:54 Digistar daemon.debug pppd[12475]: sent [CCP ConfReq
> id=0x2 <deflate 15> <deflate(old#) 15>]
> Dec  5 09:05:54 Digistar daemon.debug pptpd[12474]: GRE: accepting packet
> #26
> Dec  5 09:05:54 Digistar daemon.debug pptpd[12474]: GRE: accepting packet
> #27
> Dec  5 09:05:54 Digistar daemon.debug pppd[12475]: rcvd [CCP ConfReq
> id=0xa <deflate 15> <deflate(old#) 15>]
> Dec  5 09:05:54 Digistar daemon.debug pppd[12475]: sent [CCP ConfAck
> id=0xa <deflate 15> <deflate(old#) 15>]
> Dec  5 09:05:54 Digistar daemon.debug pppd[12475]: rcvd [CCP ConfAck
> id=0x2 <deflate 15> <deflate(old#) 15>]
> Dec  5 09:05:54 Digistar daemon.err pppd[12475]: Received bad
> configure-ack:  1a 04 78 00 18 04 78 00
> Dec  5 09:05:57 Digistar daemon.warn pppd[12475]: CCP: timeout sending
> Config-Requests
> Dec  5 09:06:25 Digistar daemon.debug pptpd[12474]: CTRL: Received PPTP
> Control Message (type: 5)
> Dec  5 09:06:25 Digistar daemon.debug pptpd[12474]: CTRL: Made a ECHO RPLY
> packet
> Dec  5 09:06:25 Digistar daemon.debug pptpd[12474]: CTRL: I wrote 20 bytes
> to the client.
> Dec  5 09:06:25 Digistar daemon.debug pptpd[12474]: CTRL: Sent packet to
> client
> Dec  5 09:07:25 Digistar daemon.debug pptpd[12474]: CTRL: Sending ECHO REQ
> id 1
> Dec  5 09:07:25 Digistar daemon.debug pptpd[12474]: CTRL: Made a ECHO REQ
> packet
> Dec  5 09:07:25 Digistar daemon.debug pptpd[12474]: CTRL: I wrote 16 bytes
> to the client.
> Dec  5 09:07:25 Digistar daemon.debug pptpd[12474]: CTRL: Sent packet to
> client
>
>
> Cliente:
> Dec  5 12:01:14 eng-4 pptp[7083]: anon log[main: pptp.c:276]: The
> synchronous pptp option is NOT activated
> Dec  5 12:01:14 eng-4 pptp[7086]: anon log[ctrlp_rep:pptp_ctrl.c:251]:
> Sent control packet type is 1 'Start-Control-Connection-Request'
> Dec  5 12:01:14 eng-4 pptp[7086]: anon log[ctrlp_disp:pptp_ctrl.c:738]:
> Received Start Control Connection Reply
> Dec  5 12:01:14 eng-4 pptp[7086]: anon log[ctrlp_disp:pptp_ctrl.c:772]:
> Client connection established.
> Dec  5 12:01:15 eng-4 pptp[7086]: anon log[ctrlp_rep:pptp_ctrl.c:251]:
> Sent control packet type is 7 'Outgoing-Call-Request'
> Dec  5 12:01:15 eng-4 pptp[7086]: anon log[ctrlp_disp:pptp_ctrl.c:857]:
> Received Outgoing Call Reply.
> Dec  5 12:01:15 eng-4 pptp[7086]: anon log[ctrlp_disp:pptp_ctrl.c:896]:
> Outgoing call established (call ID 0, peer's call ID 1408).
> Dec  5 12:01:15 eng-4 pppd[7088]: pppd 2.4.3 started by root, uid 0
> Dec  5 12:01:15 eng-4 pppd[7088]: Using interface ppp0
> Dec  5 12:01:15 eng-4 pppd[7088]: Connect: ppp0 <--> /dev/pts/5
> Dec  5 12:01:15 eng-4 pppd[7088]: Warning - secret file
> /etc/ppp/pap-secrets has world and/or group access
> Dec  5 12:01:17 eng-4 pppd[7088]: Warning - secret file
> /etc/ppp/pap-secrets has world and/or group access
> Dec  5 12:01:17 eng-4 pppd[7088]: Remote message: Login ok
> Dec  5 12:01:17 eng-4 pppd[7088]: PAP authentication succeeded
> Dec  5 12:01:17 eng-4 kernel: PPP Deflate Compression module registered
> Dec  5 12:01:17 eng-4 pppd[7088]: Deflate (15) compression enabled
> Dec  5 12:01:17 eng-4 pppd[7088]: local  IP address 192.168.10.51
> Dec  5 12:01:17 eng-4 pppd[7088]: remote IP address 192.168.10.1
> Dec  5 12:01:20 eng-4 pppd[7088]: Deflate (15) compression enabled
>
> Este é o pedaço de codigo onde o erro é gerado.
>     if( !(f->callbacks->ackci? (*f->callbacks->ackci)(f, inp, len):
>     (len == 0)) ){
>     /* Ack is bad - ignore it */
>     error("Received bad configure-ack: %P", inp, len);
>     return;
>     }
>
>
> Eu estou com uma grande tendencia a acreditar que nao é bug no codigo.
> Meus arquivos de configuraçao tambem acredito que nao tenham problemas.
> Ele fica recebendo esses "bad configure-ack" desde o pacote #1.
>
> Interessante, nao?
>
> Se alguem tiver alguma ideia sera bem vinda.
>
>
>
>
> --
> Leonardo Korndorfer
> x50/x6F/x72/x20/x66/x61/x76/x6F/x72/x21/x20/x4E/x61/x6F/x20/x61/x63/x72/x65/x64/x69/x74/x6F/x20/x71/x75/x65/x20/x74/x75/x20/x74/x65/x20/x64/x65/x73/x74/x65/x20/x6F/x20/x74/x72/x61/x62/x61/x6C/x68/x6F/x20/x64/x65/x20/x74/x72/x61/x64/x75/x7A/x69/x72/x20/x69/x73/x73/x6F/x21/x20
>
>
> alt.not.root.coffe.coffe.coffe
>
> A monk asked Joshu, "Does a dog have the Buddha nature?
> Joshu retorted, "Mu!"
>
> MSN: leokorndorfer em hotmail.com
> ICQ: 102788426
> Slack + Gentoo
> --
> Fedora-users-br mailing list
> Fedora-users-br em redhat.com
> https://www.redhat.com/mailman/listinfo/fedora-users-br
>
>
>

-- 
Cristiano Furtado dos Santos
Administrador de Sistemas Linux
http://jasonnfedora.no-ip.org/repositorio
http://fedora.org.br
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