Re: Problemas com VPN para Windows XP
Ha!!! Este problema é muito bom!!!! Adoro problemas assim...... Dificeis de resolver que dao a maior dor de cabeca....
Seguinte:
O protocole GRE tem que esta liberado no firewall. A mensagem abaixo
faz referencia a este protocolo. Penso que o firewall nao seja o motivo
mas é bom checar....
Proceda com o seguinte:
1 - Versao do ppp que esta sendo utilizada
2 - Seu Kernel esta compilado com o pacth MPPE . Se não sem chance nao vai funcionar. Será necessario recompilar o kernel
3 - Qual o tipo de autenticacao que vc esta usando ? CHAP ou PAP?
4 - Libere a porta 143 no firewall para liberar a passagem do protocolo GRE.
5 - Tive este problema pois precisava que o ppp fizesse autenticacao no
arquivo do samba. Tive que aplicar um patch no pacote... Esta
funcionando.. Verifique em qual arquivo o usuario esta realizando a
autenticacao.
6 - De tudo citado acima.... Este tipo de problema e causado realmente
pelo MPPE. Existe uma maneira de aplicar o patch no pacote ppp mas nao
recomendo.... e melhor recompilar o kernel....
baixe o patch com o apt-get . Aplique . recompile.... e teste
Provavelmente vai funcionar.
PS: Um detalhe se sua conexão for adsl speedy home pode ser que o
protocolo esteja sendo filtrado pela telefonica, ja tive problemas assim
Abracos! e Boa compilacao !!
On 8/31/06, Diorgenes Mello <diorgenes.mello@gmail.com> wrote:
Senhores,
Estou tendo problemas para conexão VPN vinda do Windows XP.
Não tenho idéia do que possa estar acontecendo.
A coneção a partir do XP para meu servidor Debina é iniciada, ele
conecta autentica e quando ele vai registrar o computador na rede
aparece um erro. Vejam meus logs.
Aug 31 10:25:09 SERVER01 pptpd[24417]: CTRL: Client
201.18.79.10
control connection started
Aug 31 10:25:10 SERVER01 pptpd[24417]: CTRL: Starting call (launching
pppd, opening GRE)
Aug 31 10:25:10 SERVER01 pppd[24418]: Plugin
/usr/lib/pptpd/pptpd-logwtmp.so loaded.
Aug 31 10:25:10 SERVER01 pppd[24418]: pppd 2.4.3 started by root, uid 0
Aug 31 10:25:10 SERVER01 pppd[24418]: Using interface ppp1
Aug 31 10:25:10 SERVER01 pppd[24418]: Connect: ppp1 <--> /dev/pts/2
Aug 31 10:25:10 SERVER01 pptpd[24417]: GRE: Bad checksum from pppd.
Aug 31 10:25:10 SERVER01 pptpd[24417]: GRE:
read(fd=5,buffer=8056720,len=8260) from network failed: status = -1
error = Protocol not available
Aug 31 10:25:10 SERVER01 pptpd[24417]: CTRL: GRE read or PTY write
failed (gre,pty)=(5,4)
Aug 31 10:25:10 SERVER01 pptpd[24417]: CTRL: Reaping child PPP[24418]
Aug 31 10:25:12 SERVER01 snmpd[2829]: Connection from
127.0.0.1
Aug 31 10:25:12 SERVER01 last message repeated 9 times
Aug 31 10:25:25 SERVER01 pptpd[24453]: CTRL: Client 201.18.79.10
control connection started
Aug 31 10:25:25 SERVER01 pptpd[24453]: CTRL: Starting call (launching
pppd, opening GRE)
Aug 31 10:25:25 SERVER01 pppd[24454]: Plugin
/usr/lib/pptpd/pptpd-logwtmp.so loaded.
Aug 31 10:25:25 SERVER01 pppd[24454]: pppd
2.4.3 started by root, uid 0
Aug 31 10:25:25 SERVER01 pppd[24454]: Using interface ppp2
Aug 31 10:25:25 SERVER01 pppd[24454]: Connect: ppp2 <--> /dev/pts/3
Aug 31 10:25:25 SERVER01 pptpd[24453]: GRE: Bad checksum from pppd.
Aug 31 10:25:25 SERVER01 pptpd[24453]: GRE:
read(fd=5,buffer=8056720,len=8260) from network failed: status = -1
error = Protocol not available
Aug 31 10:25:25 SERVER01 pptpd[24453]: CTRL: GRE read or PTY write
failed (gre,pty)=(5,4)
Aug 31 10:25:25 SERVER01 pptpd[24453]: CTRL: Reaping child PPP[24454]
Aug 31 10:25:40 SERVER01 pppd[24418]: LCP: timeout sending Config-Requests
Aug 31 10:25:40 SERVER01 pppd[24418]: Connection terminated.
Aug 31 10:25:40 SERVER01 pppd[24418]: tcflush failed: Input/output error
Aug 31 10:25:40 SERVER01 pppd[24418]: Failed to open /dev/pts/2: No
such file or directory
Aug 31 10:25:40 SERVER01 pppd[24418]: Modem hangup
Aug 31 10:25:40 SERVER01 pppd[24418]: Exit.
Aug 31 10:25:40 SERVER01 pptpd[24417]: CTRL: Client 201.128.179.20
control connection finished
Aug 31 10:25:55 SERVER01 pppd[24454]: LCP: timeout sending Config-Requests
Aug 31 10:25:55 SERVER01 pppd[24454]: Connection terminated.
Aug 31 10:25:55 SERVER01 pppd[24454]: tcflush failed: Input/output error
Aug 31 10:25:55 SERVER01 pppd[24454]: Failed to open /dev/pts/3: No
such file or directory
Aug 31 10:25:55 SERVER01 pppd[24454]: Modem hangup
Aug 31 10:25:55 SERVER01 pppd[24454]: Exit.
Aug 31 10:25:55 SERVER01 pptpd[24453]: CTRL: Client 201.128.179.20
control connection finished
Aug 31 10:26:26 SERVER01 pptpd[24476]: CTRL: Client 201.128.179.20
control connection started
Aug 31 10:26:26 SERVER01 pptpd[24476]: CTRL: Starting call (launching
pppd, opening GRE)
Aug 31 10:26:26 SERVER01 pppd[24477]: Plugin
/usr/lib/pptpd/pptpd-logwtmp.so loaded.
Aug 31 10:26:26 SERVER01 pppd[24477]: pppd 2.4.3 started by root, uid 0
Aug 31 10:26:26 SERVER01 pppd[24477]: Using interface ppp1
Aug 31 10:26:26 SERVER01 pppd[24477]: Connect: ppp1 <--> /dev/pts/2
Aug 31 10:26:26 SERVER01 pptpd[24476]: GRE: Bad checksum from pppd.
Aug 31 10:26:26 SERVER01 pptpd[24476]: GRE:
read(fd=5,buffer=8056720,len=8260) from network failed: status = -1
error = Protocol not available
Aug 31 10:26:26 SERVER01 pptpd[24476]: CTRL: GRE read or PTY write
failed (gre,pty)=(5,4)
Aug 31 10:26:26 SERVER01 pptpd[24476]: CTRL: Reaping child PPP[24477]
Aug 31 10:26:56 SERVER01 pppd[24477]: LCP: timeout sending Config-Requests
Aug 31 10:26:56 SERVER01 pppd[24477]: Connection terminated.
Aug 31 10:26:56 SERVER01 pppd[24477]: tcflush failed: Input/output error
Aug 31 10:26:56 SERVER01 pppd[24477]: Failed to open /dev/pts/2: No
such file or directory
Aug 31 10:26:56 SERVER01 pppd[24477]: Modem hangup
Aug 31 10:26:56 SERVER01 pppd[24477]: Exit.
Qualquer ajuda é bem vinda...
--
Diorgenes Mello
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