Não se pode ajudar, mas ja ouvir dizer que pptp tem problemas em fechar tunel atrás de NAT.

2006/12/5, Cristiano Furtado <jasonnfedora@gmail.com >:
veja no log se aparece a confirmação igual a esta abaixo:

Dec  5 11:25:37 fedora pptpd[10227]: CTRL: Client 200.254.241.07 control connection started
Dec  5 11:25:37 fedora pptpd[10227]: CTRL: Starting call (launching pppd, opening GRE)
Dec  5 11:25:38 fedora pppd[10228]: Plugin /usr/lib/pptpd/pptpd-logwtmp.so loaded.
Dec  5 11:25:38 fedora pppd[10228]: pppd 2.4.3 started by root, uid 0
Dec  5 11:25:38 fedora pppd[10228]: Using interface ppp1
Dec  5 11:25:38 fedora pppd[10228]: Connect: ppp1 <--> /dev/pts/4404
Dec  5 11:25:41 fedora pppd[10228]: MPPE 128-bit stateless compression enabled
Dec  5 11:25:44 fedora pppd[10228]: found interface eth1 for proxy arp
Dec  5 11:25:44 fedora pppd[10228]: local  IP address 192.168.0.240
Dec  5 11:25:44 fedora pppd[10228]: remote IP address 192.168.0.241


2006/12/5, Leonardo Korndorfer <leokorndorfer@gmail.com>:
Mais um detalhe. É estabelecido um tunel sim. Mas nao parece funcionar.


On 12/5/06, Leonardo Korndorfer < leokorndorfer@gmail.com > wrote:
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.




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Leonardo Korndorfer
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MSN: leokorndorfer@hotmail.com
ICQ: 102788426
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Leonardo Korndorfer
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alt.not.root.coffe.coffe.coffe

A monk asked Joshu, "Does a dog have the Buddha nature?
Joshu retorted, "Mu!"

MSN: leokorndorfer@hotmail.com
ICQ: 102788426
Slack + Gentoo

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