On Mon, 22 Sep 2003, Damion de Soto wrote:
Hi Damion,
> I've never seen a tcpdump like that before.
> out of interest, what command-line options did you use ?
I have vlan500 dedicated to the L2TP service so I used the following:
tcpdump -i vlan500
> It looks like some authentication problem to me.
Hmmm I thought it could be something like that..
> You may want to play with your authentication options in your config files.
>
> I've always omitted all the all the authentication options from l2tpd.conf, and
> just used the normal options in the ppp options file.
You wouldn't be able to on or offlist provide me with a sample of your
l2tpd.conf and ppp options file(s) (without private details of course).
> sorry I can't help you more.
You have been very helpful.
If there is anyone else out there that might have any ideas as to what is
up...
Cheers.
>
> Tim Philips wrote:
> >
> > ------------------------------------------------------------------------
> >
> > 20:18:29.772200 ASCEND-LAC.9104 > L2TP-LNS.l2tp: l2tp:[TLS](0/0)Ns=0,Nr=0
> > *MSGTYPE(SCCRQ) *PROTO_VER(1.0) *FRAMING_CAP(AS) *BEARER_CAP(AD) |...
> > 20:18:29.776421 L2TP-LNS.l2tp > ASCEND-LAC.9104: l2tp:[TLS](28/0)Ns=0,Nr=1
> > *MSGTYPE(SCCRP) *PROTO_VER(1.0) *FRAMING_CAP(AS) *BEARER_CAP() |... (DF)
> > 20:18:29.778770 ASCEND-LAC.9104 > L2TP-LNS.l2tp: l2tp:[TLS](9576/0)Ns=1,Nr=1 ZLB
> > 20:18:29.778953 ASCEND-LAC.9104 > L2TP-LNS.l2tp: l2tp:[TLS](9576/0)Ns=1,Nr=1
> > *MSGTYPE(SCCCN) *CHALLENGE_RESP(cc53952f1d03bbda960b8e5179bc076e)
> > 20:18:29.779263 L2TP-LNS.l2tp > ASCEND-LAC.9104: l2tp:[TLS](28/0)Ns=1,Nr=2 ZLB
> > (DF)
> > 20:18:29.779319 ASCEND-LAC.9104 > L2TP-LNS.l2tp: l2tp:[TLS](9576/0)Ns=2,Nr=1
> > *MSGTYPE(ICRQ) *ASSND_SESS_ID(3002) *CALL_SER_NUM(134218247) *BEARER_TYPE(A) |...
> > 20:18:29.781272 L2TP-LNS.l2tp > ASCEND-LAC.9104: l2tp:[TLS](28/3002)Ns=1,Nr=3
> > *MSGTYPE(ICRP) *ASSND_SESS_ID(9909) (DF)
> > 20:18:29.781290 L2TP-LNS.l2tp > ASCEND-LAC.9104: l2tp:[TLS](28/0)Ns=2,Nr=3 ZLB
> > (DF)
> > 20:18:29.783337 ASCEND-LAC.9104 > L2TP-LNS.l2tp: l2tp:[TLS](9576/0)Ns=3,Nr=2 ZLB
> > 20:18:29.784797 ASCEND-LAC.9104 > L2TP-LNS.l2tp: l2tp:[TLS](9576/9909)Ns=3,Nr=2
> > *MSGTYPE(ICCN) *TX_CONN_SPEED(44000) RX_CONN_SPEED(26400) *FRAMING_TYPE(A) |...
> > 20:18:29.789691 L2TP-LNS.l2tp > ASCEND-LAC.9104: l2tp:[TLS](28/3002)Ns=2,Nr=4 ZLB
> > (DF)
> > 20:18:29.804993 L2TP-LNS.l2tp > ASCEND-LAC.9104: l2tp:[L](28/3002) {LCP 24:
> > Conf-Req(1), ACCM=00000000, Auth-Prot PAP, Magic-Num=a6c481a9} (DF)
> > 20:18:29.955996 ASCEND-LAC.9104 > L2TP-LNS.l2tp: l2tp:[](9576/9909) {LCP 51:
> > Conf-Req(4), ACCM=00000000, Magic-Num=46be5b3f, PFC, ACFC, MRRU=1614, End-Disc
> > Local}
> > 20:18:29.970049 ASCEND-LAC.9104 > L2TP-LNS.l2tp: l2tp:[](9576/9909) {LCP 24:
> > Conf-Ack(1), ACCM=00000000, Auth-Prot PAP, Magic-Num=a6c481a9}
> > 20:18:31.195959 ASCEND-LAC.9104 > L2TP-LNS.l2tp: l2tp:[](9576/9909) {LCP 51:
> > Conf-Req(5), ACCM=00000000, Magic-Num=46be5b3f, PFC, ACFC, MRRU=1614, End-Disc
> > Local}
> > 20:18:32.807765 L2TP-LNS.l2tp > ASCEND-LAC.9104: l2tp:[L](28/3002) {LCP 24:
> > Conf-Req(1), ACCM=00000000, Auth-Prot PAP, Magic-Num=a6c481a9} (DF)
> > 20:18:32.965421 ASCEND-LAC.9104 > L2TP-LNS.l2tp: l2tp:[](9576/9909) {LCP 24:
> > Conf-Ack(1), ACCM=00000000, Auth-Prot PAP, Magic-Num=a6c481a9}
> > 20:18:34.210952 ASCEND-LAC.9104 > L2TP-LNS.l2tp: l2tp:[](9576/9909) {LCP 51:
> > Conf-Req(6), ACCM=00000000, Magic-Num=46be5b3f, PFC, ACFC, MRRU=1614, End-Disc
> > Local}
> > 20:18:35.817805 L2TP-LNS.l2tp > ASCEND-LAC.9104: l2tp:[L](28/3002) {LCP 24:
> > Conf-Req(1), ACCM=00000000, Auth-Prot PAP, Magic-Num=a6c481a9} (DF)
> > 20:18:35.965037 ASCEND-LAC.9104 > L2TP-LNS.l2tp: l2tp:[](9576/9909) {LCP 24:
> > Conf-Ack(1), ACCM=00000000, Auth-Prot PAP, Magic-Num=a6c481a9}
> > 20:18:38.206807 ASCEND-LAC.9104 > L2TP-LNS.l2tp: l2tp:[](9576/9909) {LCP 51:
> > Conf-Req(7), ACCM=00000000, Magic-Num=46be5b3f, PFC, ACFC, MRRU=1614, End-Disc
> > Local}
> > 20:18:38.827848 L2TP-LNS.l2tp > ASCEND-LAC.9104: l2tp:[L](28/3002) {LCP 24:
> > Conf-Req(1), ACCM=00000000, Auth-Prot PAP, Magic-Num=a6c481a9} (DF)
> > 20:18:38.991426 ASCEND-LAC.9104 > L2TP-LNS.l2tp: l2tp:[](9576/9909) {LCP 24:
> > Conf-Ack(1), ACCM=00000000, Auth-Prot PAP, Magic-Num=a6c481a9}
> > 20:18:41.837816 L2TP-LNS.l2tp > ASCEND-LAC.9104: l2tp:[L](28/3002) {LCP 24:
> > Conf-Req(1), ACCM=00000000, Auth-Prot PAP, Magic-Num=a6c481a9} (DF)
> > 20:18:41.990593 ASCEND-LAC.9104 > L2TP-LNS.l2tp: l2tp:[](9576/9909) {LCP 24:
> > Conf-Ack(1), ACCM=00000000, Auth-Prot PAP, Magic-Num=a6c481a9}
> > 20:18:42.211309 ASCEND-LAC.9104 > L2TP-LNS.l2tp: l2tp:[](9576/9909) {LCP 51:
> > Conf-Req(8), ACCM=00000000, Magic-Num=46be5b3f, PFC, ACFC, MRRU=1614, End-Disc
> > Local}
> > 20:18:44.847938 L2TP-LNS.l2tp > ASCEND-LAC.9104: l2tp:[L](28/3002) {LCP 24:
> > Conf-Req(1), ACCM=00000000, Auth-Prot PAP, Magic-Num=a6c481a9} (DF)
> > 20:18:45.006354 ASCEND-LAC.9104 > L2TP-LNS.l2tp: l2tp:[](9576/9909) {LCP 24:
> > Conf-Ack(1), ACCM=00000000, Auth-Prot PAP, Magic-Num=a6c481a9}
> > 20:18:46.206717 ASCEND-LAC.9104 > L2TP-LNS.l2tp: l2tp:[](9576/9909) {LCP 51:
> > Conf-Req(9), ACCM=00000000, Magic-Num=46be5b3f, PFC, ACFC, MRRU=1614, End-Disc
> > Local}
> > 20:18:47.857990 L2TP-LNS.l2tp > ASCEND-LAC.9104: l2tp:[L](28/3002) {LCP 24:
> > Conf-Req(1), ACCM=00000000, Auth-Prot PAP, Magic-Num=a6c481a9} (DF)
> > 20:18:48.020606 ASCEND-LAC.9104 > L2TP-LNS.l2tp: l2tp:[](9576/9909) {LCP 24:
> > Conf-Ack(1), ACCM=00000000, Auth-Prot PAP, Magic-Num=a6c481a9}
> > 20:18:50.211291 ASCEND-LAC.9104 > L2TP-LNS.l2tp: l2tp:[](9576/9909) {LCP 51:
> > Conf-Req(10), ACCM=00000000, Magic-Num=46be5b3f, PFC, ACFC, MRRU=1614, End-Disc
> > Local}
> > 20:18:50.868089 L2TP-LNS.l2tp > ASCEND-LAC.9104: l2tp:[L](28/3002) {LCP 24:
> > Conf-Req(1), ACCM=00000000, Auth-Prot PAP, Magic-Num=a6c481a9} (DF)
> > 20:18:51.021631 ASCEND-LAC.9104 > L2TP-LNS.l2tp: l2tp:[](9576/9909) {LCP 24:
> > Conf-Ack(1), ACCM=00000000, Auth-Prot PAP, Magic-Num=a6c481a9}
> > 20:18:53.878079 L2TP-LNS.l2tp > ASCEND-LAC.9104: l2tp:[L](28/3002) {LCP 24:
> > Conf-Req(1), ACCM=00000000, Auth-Prot PAP, Magic-Num=a6c481a9} (DF)
> > 20:18:54.031534 ASCEND-LAC.9104 > L2TP-LNS.l2tp: l2tp:[](9576/9909) {LCP 24:
> > Conf-Ack(1), ACCM=00000000, Auth-Prot PAP, Magic-Num=a6c481a9}
> > 20:18:54.210066 ASCEND-LAC.9104 > L2TP-LNS.l2tp: l2tp:[](9576/9909) {LCP 51:
> > Conf-Req(11), ACCM=00000000, Magic-Num=46be5b3f, PFC, ACFC, MRRU=1614, End-Disc
> > Local}
> > 20:18:56.888154 L2TP-LNS.l2tp > ASCEND-LAC.9104: l2tp:[L](28/3002) {LCP 24:
> > Conf-Req(1), ACCM=00000000, Auth-Prot PAP, Magic-Num=a6c481a9} (DF)
> > 20:18:57.045385 ASCEND-LAC.9104 > L2TP-LNS.l2tp: l2tp:[](9576/9909) {LCP 24:
> > Conf-Ack(1), ACCM=00000000, Auth-Prot PAP, Magic-Num=a6c481a9}
> > 20:18:59.400454 ASCEND-LAC.9104 > L2TP-LNS.l2tp: l2tp:[](9576/9909) {LCP 51:
> > Conf-Req(12), ACCM=00000000, Magic-Num=46be5b3f, PFC, ACFC, MRRU=1614, End-Disc
> > Local}
> > 20:19:02.204905 ASCEND-LAC.9104 > L2TP-LNS.l2tp: l2tp:[](9576/9909) {LCP 51:
> > Conf-Req(13), ACCM=00000000, Magic-Num=46be5b3f, PFC, ACFC, MRRU=1614, End-Disc
> > Local}
> > 20:19:08.643245 ASCEND-LAC.9104 > L2TP-LNS.l2tp: l2tp:[TLS](9576/9909)Ns=4,Nr=2
> > *MSGTYPE(CDN) *RESULT_CODE(1/0) *Q931_CC(16, 00) *ASSND_SESS_ID(3002)
> > 20:19:09.635118 ASCEND-LAC.9104 > L2TP-LNS.l2tp: l2tp:[TLS](9576/9909)Ns=4,Nr=2
> > *MSGTYPE(CDN) *RESULT_CODE(1/0) *Q931_CC(16, 00) *ASSND_SESS_ID(3002)
> > 20:19:10.647825 ASCEND-LAC.9104 > L2TP-LNS.l2tp: l2tp:[TLS](9576/9909)Ns=4,Nr=2
> > *MSGTYPE(CDN) *RESULT_CODE(1/0) *Q931_CC(16, 00) *ASSND_SESS_ID(3002)
> > 20:19:11.647771 ASCEND-LAC.9104 > L2TP-LNS.l2tp: l2tp:[TLS](9576/9909)Ns=4,Nr=2
> > *MSGTYPE(CDN) *RESULT_CODE(1/0) *Q931_CC(16, 00) *ASSND_SESS_ID(3002)
> > 20:19:12.648073 ASCEND-LAC.9104 > L2TP-LNS.l2tp: l2tp:[TLS](9576/9909)Ns=4,Nr=2
> > *MSGTYPE(CDN) *RESULT_CODE(1/0) *Q931_CC(16, 00) *ASSND_SESS_ID(3002)
> > 20:19:14.647977 ASCEND-LAC.9104 > L2TP-LNS.l2tp: l2tp:[TLS](9576/9909)Ns=4,Nr=2
> > *MSGTYPE(CDN) *RESULT_CODE(1/0) *Q931_CC(16, 00) *ASSND_SESS_ID(3002)
> > 20:19:16.648032 ASCEND-LAC.9104 > L2TP-LNS.l2tp: l2tp:[TLS](9576/9909)Ns=4,Nr=2
> > *MSGTYPE(CDN) *RESULT_CODE(1/0) *Q931_CC(16, 00) *ASSND_SESS_ID(3002)
>
>
>
--
Tim Philips
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