--- On Fri, 7/11/08, my mail <[EMAIL PROTECTED]> wrote:
> From: my mail <[EMAIL PROTECTED]>
> Subject: [tanya-jawab] PPTP -- LCP: timeout sending Config-Requests
> To: tanya-jawab@linux.or.id
> Date: Friday, July 11, 2008, 6:19 AM
> aku abis install pptpd daemon, trus dah coba jalanin dan
> forward dari modem juga udah jalan, di coba di LAN udah
> bisa, trus di coba dari luar ada yang bisa ada yang ga,
>
> klo ga bisa ntu di server pptpd nya muncul baris seperti
> ini:
>
> LCP: timeout sending Config-Requests
>
>
> trus ku coba capture pake tcpdump hasilnya
>
> ^
> $ sudo tcpdump -i eth1 -vv tcp port 1723 or 47
> tcpdump: listening on eth1, link-type EN10MB (Ethernet),
> capture size 96 bytes
> 11:16:04.890789 IP (tos 0x0, ttl 123, id 38035, offset 0,
> flags [DF], proto: TCP (6), length: 48)
> 104.subnet125-xxx-xxx.speedy.telkom.net.id.2322 >
> proxy.local.1723: S, cksum 0x23ec (correct),
> 3572452546:3572452546(0) win 65535 1452,nop,nop,sackOK>
> 11:16:31.588693 IP (tos 0x0, ttl 64, id 0, offset 0, flags
> [DF], proto: TCP (6), length: 48) proxy.local.1723 >
> 104.subnet125-xxx-xxx.speedy.telkom.net.id.2322: S, cksum
> 0x6cc8 (correct), 2996235683:2996235683(0) ack 3572452547
> win 5840
> 11:16:05.149597 IP (tos 0x0, ttl 123, id 38052, offset 0,
> flags [DF], proto: TCP (6), length: 196)
> 104.subnet125-xxx-xxx.speedy.telkom.net.id.2322 >
> proxy.local.1723: P 1:157(156) ack 1 win 65535: pptp
> Length=156 CTRL-MSG Magic-Cookie=1a2b3c4d
> CTRL_MSGTYPE=SCCRQ PROTO_VER(1.0) FRAME_CAP(A)
> BEARER_CAP(A) MAX_CHAN(0) FIRM_REV(2600) [|pptp]
> 11:16:05.149626 IP (tos 0x0, ttl 64, id 37159, offset 0,
> flags [DF], proto: TCP (6), length: 40) proxy.local.1723
> > 104.subnet125-xxx-xxx.speedy.telkom.net.id.2322: .,
> cksum 0x98f0 (correct), 1:1(0) ack 157 win 5840
> 11:16:05.198267 IP (tos 0x0, ttl 64, id 37160, offset 0,
> flags [DF], proto: TCP (6), length: 196) proxy.local.1723
> > 104.subnet125-xxx-xxx.speedy.telkom.net.id.2322: P
> 1:157(156) ack 157 win 5840: pptp Length=156 CTRL-MSG
> Magic-Cookie=1a2b3c4d CTRL_MSGTYPE=SCCRP PROTO_VER(1.0)
> RESULT_CODE(1:Successful channel establishment)
> ERR_CODE(0:None) FRAME_CAP() BEARER_CAP() MAX_CHAN(1)
> FIRM_REV(1) [|pptp]
> 11:16:08.196451 IP (tos 0x0, ttl 64, id 37161, offset 0,
> flags [DF], proto: TCP (6), length: 196) proxy.local.1723
> > 104.subnet125-xxx-xxx.speedy.telkom.net.id.2322: P
> 1:157(156) ack 157 win 5840: pptp Length=156 CTRL-MSG
> Magic-Cookie=1a2b3c4d CTRL_MSGTYPE=SCCRP PROTO_VER(1.0)
> RESULT_CODE(1:Successful channel establishment)
> ERR_CODE(0:None) FRAME_CAP() BEARER_CAP() MAX_CHAN(1)
> FIRM_REV(1) [|pptp]
> 11:16:08.336292 IP (tos 0x0, ttl 123, id 38059, offset 0,
> flags [DF], proto: TCP (6), length: 208)
> 104.subnet125-xxx-xxx.speedy.telkom.net.id.2322 >
> proxy.local.1723: P 157:325(168) ack 157 win 65379: pptp
> Length=168 CTRL-MSG Magic-Cookie=1a2b3c4d CTRL_MSGTYPE=OCRQ
> CALL_ID(32768) CALL_SER_NUM(58102) MIN_BPS(300)
> MAX_BPS(1) BEARER_TYPE(Any) FRAME_TYPE(E)
> RECV_WIN(64) PROC_DELAY(0) PHONE_NO_LEN(0) [|pptp]
> 11:16:08.336310 IP (tos 0x0, ttl 64, id 37162, offset 0,
> flags [DF], proto: TCP (6), length: 40) proxy.local.1723
> > 104.subnet125-xxx-xxx.speedy.telkom.net.id.2322: .,
> cksum 0x97ac (correct), 157:157(0) ack 325 win 5840
> 11:16:08.337169 IP (tos 0x0, ttl 64, id 37163, offset 0,
> flags [DF], proto: TCP (6), length: 72) proxy.local.1723
> > 104.subnet125-xxx-xxx.speedy.telkom.net.id.2322: P,
> cksum 0x2df7 (incorrect (-> 0xd42c), 157:189(32) ack 325
> win 5840: pptp Length=32 CTRL-MSG Magic-Cookie=1a2b3c4d
> CTRL_MSGTYPE=OCRP CALL_ID(1152) PEER_CALL_ID(32768)
> RESULT_CODE(1:Connected) ERR_CODE(0:None) CAUSE_CODE(0)
> CONN_SPEED(1) RECV_WIN(64) PROC_DELAY(0)
> PHY_CHAN_ID(0)
> 11:16:10.461480 IP (tos 0x0, ttl 123, id 38063, offset 0,
> flags [DF], proto: TCP (6), length: 40)
> 104.subnet125-xxx-xxx.speedy.telkom.net.id.2322 >
> proxy.local.1723: ., cksum 0xaf18 (correct), 325:325(0) ack
> 157 win 65379
> 11:16:10.918450 IP (tos 0x0, ttl 123, id 38064, offset 0,
> flags [DF], proto: TCP (6), length: 64)
> 104.subnet125-xxx-xxx.speedy.telkom.net.id.2322 >
> proxy.local.1723: P, cksum 0x5446 (correct), 325:349(24)
> ack 189 win 65347: pptp Length=24 CTRL-MSG
> Magic-Cookie=1a2b3c4d CTRL_MSGTYPE=SLI PEER_CALL_ID(1042)
> SEND_ACCM(0x) RECV_ACCM(0x)
> 11:16:10.956540 IP (tos 0x0, ttl 64, id 37164, offset 0,
> flags [DF], proto: TCP (6), length: 40) proxy.local.1723
> > 104.subnet125-xxx-xxx.speedy.telkom.net.id.2322: .,
> cksum 0x9774 (correct), 189:189(0) ack 349 win 5840
> 11:16:38.501429 IP (tos 0x0, ttl 64, id 37165, offset 0,
> flags [DF], proto: TCP (6), length: 40) proxy.local.1723
> > 104.subnet125-xxx-xxx.speedy.telkom.net.id.2322: F,
> cksum 0x9773 (correct), 189:189(0) ack 349 win 5840
> 11:16:38.722587 IP (tos 0x0, ttl 123, id 38133, offset 0,
> flags [DF], proto: TCP (6), length: 40)
> 104.su