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Why PPTP Fail?

lhuang
Level 1
Level 1

PIX525 configure PPTP to allow remote user dial at VPN.PIX configure :

vpngroup vpn3000 address-pool vpnpool

vpngroup vpn3000 dns-server 192.168.0.20

vpngroup vpn3000 wins-server 192.168.0.20

vpngroup vpn3000 default-domain vvgroup.com

vpngroup vpn3000 idle-time 1800

vpngroup vpn3000 password ********

telnet timeout 5

ssh timeout 5

console timeout 0

vpdn group 1 accept dialin pptp

vpdn group 1 ppp authentication pap

vpdn group 1 ppp authentication chap

vpdn group 1 ppp authentication mschap

vpdn group 1 ppp encryption mppe 40

vpdn group 1 client configuration address local vpnpool

vpdn group 1 pptp echo 60

vpdn group 1 client authentication local

vpdn username vpn3000 password ********

=================================================

But remote user can't dial,Pix525 debug Information:

PPP virtual access open, ifc = 0

Rcvd Link Control Protocol pkt, Action code is: Config Request, len is: 40

Pkt dump: 0506211b4a25070208020d03061104064e13170192aa794627b4429782e118acc76cb5f30000000d

LCP Option: MAGIC_NUMBER, len: 6, data: 211b4a25

LCP Option: PROTOCOL_HDR_COMPRESSION, len: 2, data:

LCP Option: ADDRESS_CONTROL_COMPRESSION, len: 2, data:

LCP Option: CALL_BACK, len: 3, data: 06

LCP Option: MULTI_LINK_RCV_UNIT, len: 4, data: 064e

LCP Option: END_POINT_DISCOVERY, len: 23, data: 0192aa794627b4429782e118acc76cb5f30000000d

Xmit Link Control Protocol pkt, Action code is: Config Request, len is: 11

Pkt dump: 0305c223800506201af976

LCP Option: AUTHENTICATION_TYPES, len: 5, data: c22380

LCP Option: MAGIC_NUMBER, len: 6, data: 201af976

Xmit Link Control Protocol pkt, Action code is: Config Reject, len is: 34

Pkt dump: 070208020d03061104064e13170192aa794627b4429782e118acc76cb5f30000000d

LCP Option: PROTOCOL_HDR_COMPRESSION, len: 2, data:

LCP Option: ADDRESS_CONTROL_COMPRESSION, len: 2, data:

LCP Option: CALL_BACK, len: 3, data: 06

LCP Option: MULTI_LINK_RCV_UNIT, len: 4, data: 064e

LCP Option: END_POINT_DISCOVERY, len: 23, data: 0192aa794627b4429782e118acc76cb5f30000000d

Rcvd Link Control Protocol pkt, Action code is: Config Request, len is: 40

Pkt dump: 0506211b4a25070208020d03061104064e13170192aa794627b4429782e118acc76cb5f30000000d

LCP Option: MAGIC_NUMBER, len: 6, data: 211b4a25

LCP Option: PROTOCOL_HDR_COMPRESSION, len: 2, data:

LCP Option: ADDRESS_CONTROL_COMPRESSION, len: 2, data:

LCP Option: CALL_BACK, len: 3, data: 06

LCP Option: MULTI_LINK_RCV_UNIT, len: 4, data: 064e

LCP Option: END_POINT_DISCOVERY, len: 23, data: 0192aa794627b4429782e118acc76cb5f30000000d

Xmit Link Control Protocol pkt, Action code is: Config Reject, len is: 34

Pkt dump: 070208020d03061104064e13170192aa794627b4429782e118acc76cb5f30000000d

LCP Option: PROTOCOL_HDR_COMPRESSION, len: 2, data:

LCP Option: ADDRESS_CONTROL_COMPRESSION, len: 2, data:

LCP Option: CALL_BACK, len: 3, data: 06

LCP Option: MULTI_LINK_RCV_UNIT, len: 4, data: 064e

LCP Option: END_POINT_DISCOVERY, len: 23, data: 0192aa794627b4429782e118acc76cb5f30000000d

Xmit Link Control Protocol pkt, Action code is: Config Request, len is: 11

Pkt dump: 0305c223800506201af976

LCP Option: AUTHENTICATION_TYPES, len: 5, data: c22380

LCP Option: MAGIC_NUMBER, len: 6, data: 201af976

Rcvd Link Control Protocol pkt, Action code is: Config Request, len is: 40

Pkt dump: 0506211b4a25070208020d03061104064e13170192aa794627b4429782e118acc76cb5f30000000d

LCP Option: MAGIC_NUMBER, len: 6, data: 211b4a25

LCP Option: PROTOCOL_HDR_COMPRESSION, len: 2, data:

LCP Option: ADDRESS_CONTROL_COMPRESSION, len: 2, data:

LCP Option: CALL_BACK, len: 3, data: 06

LCP Option: MULTI_LINK_RCV_UNIT, len: 4, data: 064e

LCP Option: END_POINT_DISCOVERY, len: 23, data: 0192aa794627b4429782e118acc76cb5f30000000d

===================================================

Please tell me why?

Thanks

1 Reply 1

ebreniz
Level 6
Level 6

Try this link for troubleshooting PPTP, use debugs and Isolate the problem.

http://www.cisco.com/en/US/tech/tk827/tk369/technologies_q_and_a_item09186a00800946ef.shtml

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