Olá galera,

Estou implementando um servidor de VPN com o PPTPD, até ai beleza.
Com os clientes Rwindows, eu conecto normalmente na VPN (sem criptografia), mas com um linux Desktop FC4 com o pptpclient
dá uns erros e não conecta. Já tirei todas opções de criptografia. Alguém tem uma ajuda?

LOG - SERVIDOR (Quando o cliente Linux LOGA)
Mar  3 15:43:10 shrek pptpd[6167]: CTRL: Client 172.16.16.13 control connection started
Mar  3 15:43:11 shrek pptpd[6167]: CTRL: Starting call (launching pppd, opening GRE)
Mar  3 15:43:11 shrek pppd[6168]: Plugin /usr/lib/pptpd/pptpd-logwtmp.so loaded.
Mar  3 15:43:11 shrek pppd[6168]: pptpd-logwtmp: $Version$
Mar  3 15:43:11 shrek pppd[6168]: pppd 2.4.3 started by root, uid 0
Mar  3 15:43:11 shrek pppd[6168]: Using interface ppp0
Mar  3 15:43:11 shrek pppd[6168]: Connect: ppp0 <--> /dev/pts/1
Mar  3 15:43:11 shrek pptpd[6167]: GRE: Bad checksum from pppd.
Mar  3 15:43:11 shrek pppd[6168]: peer refused to authenticate: terminating link
Mar  3 15:43:11 shrek pppd[6168]: Connection terminated.
Mar  3 15:43:11 shrek pppd[6168]: Exit.
Mar  3 15:43:11 shrek pptpd[6167]: GRE: read(fd=6,buffer=804eb00,len=8196) from PTY failed: status = -1 error = Input/output error, usually caused by unexpected termination of pppd, check option syntax and pppd logs
Mar  3 15:43:11 shrek pptpd[6167]: CTRL: PTY read or GRE write failed (pty,gre)=(6,7)
Mar  3 15:43:11 shrek pptpd[6167]: CTRL: Client 172.16.16.13 control connection finished



LOG - Cliente LINUX FC4 - Logando no server:
Mar  3 15:44:21 sergio pppd[8193]: pppd 2.4.2 started by sergio, uid 0
Mar  3 15:44:21 sergio pptp[8194]: anon log[main:pptp.c:267]: The synchronous pptp option is NOT activated
Mar  3 15:44:21 sergio pppd[8193]: Using interface ppp0
Mar  3 15:44:21 sergio pppd[8193]: Connect: ppp0 <--> /dev/pts/8
Mar  3 15:44:21 sergio pptp[8198]: anon log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 1 'Start-Control-Connection-Request'
Mar  3 15:44:21 sergio pptp[8198]: anon log[ctrlp_disp:pptp_ctrl.c:738]: Received Start Control Connection Reply
Mar  3 15:44:21 sergio pptp[8198]: anon log[ctrlp_disp:pptp_ctrl.c:772]: Client connection established.
Mar  3 15:44:22 sergio pptp[8198]: anon log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 7 'Outgoing-Call-Request'
Mar  3 15:44:22 sergio pptp[8198]: anon log[ctrlp_disp:pptp_ctrl.c:857]: Received Outgoing Call Reply.
Mar  3 15:44:22 sergio pptp[8198]: anon log[ctrlp_disp:pptp_ctrl.c:896]: Outgoing call established (call ID 0, peer's call ID 256).
Mar  3 15:44:22 sergio pppd[8193]: LCP terminated by peer (peer refused to authenticate)
Mar  3 15:44:22 sergio pptp[8198]: anon log[pptp_read_some:pptp_ctrl.c:543]: read returned zero, peer has closed
Mar  3 15:44:22 sergio pptp[8198]: anon log[callmgr_main:pptp_callmgr.c:255]: Closing connection (shutdown)
Mar  3 15:44:22 sergio pptp[8198]: anon log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 12 'Call-Clear-Request'
Mar  3 15:44:22 sergio pptp[8198]: anon log[pptp_read_some:pptp_ctrl.c:543]: read returned zero, peer has closed
Mar  3 15:44:22 sergio pptp[8198]: anon log[call_callback:pptp_callmgr.c:78]: Closing connection (call state)
Mar  3 15:44:22 sergio pppd[8193]: Modem hangup
Mar  3 15:44:22 sergio pppd[8193]: Connection terminated.
Mar  3 15:44:22 sergio pppd[8193]: Exit.




LOG - Cliente Rwindows - Logando no server LINUX:
Mar  3 15:58:38 shrek pptpd[7251]: CTRL: Client 172.16.16.14 control connection started
Mar  3 15:58:38 shrek pptpd[7251]: CTRL: Starting call (launching pppd, opening GRE)
Mar  3 15:58:38 shrek pppd[7252]: Plugin /usr/lib/pptpd/pptpd-logwtmp.so loaded.
Mar  3 15:58:38 shrek pppd[7252]: pptpd-logwtmp: $Version$
Mar  3 15:58:38 shrek pppd[7252]: pppd 2.4.3 started by root, uid 0
Mar  3 15:58:38 shrek pppd[7252]: Using interface ppp0
Mar  3 15:58:38 shrek pppd[7252]: Connect: ppp0 <--> /dev/pts/1
Mar  3 15:58:38 shrek pptpd[7251]: GRE: Bad checksum from pppd.
Mar  3 15:58:41 shrek pptpd[7251]: CTRL: Ignored a SET LINK INFO packet with real ACCMs!
Mar  3 15:58:41 shrek pppd[7252]: found interface eth1 for proxy arp
Mar  3 15:58:41 shrek pppd[7252]: local  IP address 201.11.73.114
Mar  3 15:58:41 shrek pppd[7252]: remote IP address 201.11.73.115
Mar  3 15:58:41 shrek pppd[7252]: pptpd-logwtmp.so ip-up ppp0 tecjump 172.16.16.14




Grato,
----------------------------------------------
Sérgio Cioban Filho
Administrador Linux - LPIC1
TECJUMP Tecnologia em Informática Ltda.
www.tecjump.com.br - (48) 3025-2985 / (48) 3222-6337.

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