[CentOS] Problems with nss_ldap - where to start?

Peter Serwe peter.serwe at gmail.com
Wed Dec 16 20:34:28 UTC 2009


I'm not really seeing what the response is, running tcpdump -vvv -i lo,
output of a whole transaction is:

tcpdump: listening on lo, link-type EN10MB (Ethernet), capture size 96 bytes
12:33:48.197928 IP (tos 0x0, ttl  64, id 61456, offset 0, flags [DF], proto:
TCP (6), length: 60) ldap.48322 > ldap.ssh: S, cksum 0xaa05 (correct),
805740654:805740654(0) win 32792 <mss 16396,sackOK,timestamp 129781886
0,nop,wscale 7>
12:33:48.204532 IP (tos 0x0, ttl  64, id 0, offset 0, flags [DF], proto: TCP
(6), length: 60) ldap.ssh > ldap.48322: S, cksum 0x1510 (correct),
807996569:807996569(0) ack 805740655 win 32768 <mss 16396,sackOK,timestamp
129781886 129781886,nop,wscale 7>
12:33:48.198050 IP (tos 0x0, ttl  64, id 61457, offset 0, flags [DF], proto:
TCP (6), length: 52) ldap.48322 > ldap.ssh: ., cksum 0xfd33 (correct),
1:1(0) ack 1 win 257 <nop,nop,timestamp 129781886 129781886>
12:33:48.209188 IP (tos 0x0, ttl  64, id 23780, offset 0, flags [DF], proto:
TCP (6), length: 72) ldap.ssh > ldap.48322: P, cksum 0xfe3c (incorrect (->
0x4771), 1:21(20) ack 1 win 256 <nop,nop,timestamp 129781888 129781886>
12:33:48.209315 IP (tos 0x0, ttl  64, id 61458, offset 0, flags [DF], proto:
TCP (6), length: 52) ldap.48322 > ldap.ssh: ., cksum 0xfd1b (correct),
1:1(0) ack 21 win 257 <nop,nop,timestamp 129781888 129781888>
12:33:48.209523 IP (tos 0x0, ttl  64, id 61459, offset 0, flags [DF], proto:
TCP (6), length: 72) ldap.48322 > ldap.ssh: P, cksum 0xfe3c (incorrect (->
0x4757), 1:21(20) ack 21 win 257 <nop,nop,timestamp 129781891 129781888>
12:33:48.209529 IP (tos 0x0, ttl  64, id 23781, offset 0, flags [DF], proto:
TCP (6), length: 52) ldap.ssh > ldap.48322: ., cksum 0xfd02 (correct),
21:21(0) ack 21 win 256 <nop,nop,timestamp 129781891 129781891>
12:33:48.209772 IP (tos 0x0, ttl  64, id 61460, offset 0, flags [DF], proto:
TCP (6), length: 764) ldap.48322 > ldap.ssh: P 21:733(712) ack 21 win 257
<nop,nop,timestamp 129781891 129781891>
12:33:48.209778 IP (tos 0x0, ttl  64, id 23782, offset 0, flags [DF], proto:
TCP (6), length: 52) ldap.ssh > ldap.48322: ., cksum 0xfa2e (correct),
21:21(0) ack 733 win 268 <nop,nop,timestamp 129781891 129781891>
12:33:48.211826 IP (tos 0x0, ttl  64, id 23783, offset 0, flags [DF], proto:
TCP (6), length: 756) ldap.ssh > ldap.48322: P 21:725(704) ack 733 win 268
<nop,nop,timestamp 129781891 129781891>
12:33:48.212006 IP (tos 0x0, ttl  64, id 61461, offset 0, flags [DF], proto:
TCP (6), length: 76) ldap.48322 > ldap.ssh: P, cksum 0xfe40 (incorrect (->
0xc918), 733:757(24) ack 725 win 268 <nop,nop,timestamp 129781891 129781891>
12:33:48.214205 IP (tos 0x0, ttl  64, id 23784, offset 0, flags [DF], proto:
TCP (6), length: 204) ldap.ssh > ldap.48322: P 725:877(152) ack 757 win 268
<nop,nop,timestamp 129781891 129781891>
12:33:48.215046 IP (tos 0x0, ttl  64, id 61462, offset 0, flags [DF], proto:
TCP (6), length: 196) ldap.48322 > ldap.ssh: P 757:901(144) ack 877 win 279
<nop,nop,timestamp 129781891 129781891>
12:33:48.221627 IP (tos 0x0, ttl  64, id 23785, offset 0, flags [DF], proto:
TCP (6), length: 772) ldap.ssh > ldap.48322: P 877:1597(720) ack 901 win 279
<nop,nop,timestamp 129781893 129781891>
12:33:48.222696 IP (tos 0x0, ttl  64, id 61463, offset 0, flags [DF], proto:
TCP (6), length: 68) ldap.48322 > ldap.ssh: P, cksum 0xfe38 (incorrect (->
0xe90b), 901:917(16) ack 1597 win 290 <nop,nop,timestamp 129781893
129781893>
12:33:48.256082 IP (tos 0x0, ttl  64, id 23786, offset 0, flags [DF], proto:
TCP (6), length: 52) ldap.ssh > ldap.48322: ., cksum 0xf335 (correct),
1597:1597(0) ack 917 win 279 <nop,nop,timestamp 129781903 129781893>
12:33:48.256088 IP (tos 0x0, ttl  64, id 61464, offset 0, flags [DF], proto:
TCP (6), length: 100) ldap.48322 > ldap.ssh: P 917:965(48) ack 1597 win 290
<nop,nop,timestamp 129781903 129781903>
12:33:48.256092 IP (tos 0x0, ttl  64, id 23787, offset 0, flags [DF], proto:
TCP (6), length: 52) ldap.ssh > ldap.48322: ., cksum 0xf2fb (correct),
1597:1597(0) ack 965 win 279 <nop,nop,timestamp 129781903 129781903>
12:33:48.256269 IP (tos 0x0, ttl  64, id 23788, offset 0, flags [DF], proto:
TCP (6), length: 100) ldap.ssh > ldap.48322: P 1597:1645(48) ack 965 win 279
<nop,nop,timestamp 129781903 129781903>
12:33:48.256407 IP (tos 0x0, ttl  64, id 61465, offset 0, flags [DF], proto:
TCP (6), length: 116) ldap.48322 > ldap.ssh: P 965:1029(64) ack 1645 win 290
<nop,nop,timestamp 129781903 129781903>
12:33:48.257338 IP (tos 0x0, ttl  64, id 36372, offset 0, flags [DF], proto:
TCP (6), length: 254) ldap.36363 > ldap.ldap: P 545516257:545516459(202) ack
552281149 win 257 <nop,nop,timestamp 129781903 129725986>
12:33:48.258726 IP (tos 0x0, ttl  64, id 17236, offset 0, flags [DF], proto:
TCP (6), length: 66) ldap.ldap > ldap.36363: P, cksum 0xfe36 (incorrect (->
0x9e99), 1:15(14) ack 202 win 273 <nop,nop,timestamp 129781903 129781903>
12:33:48.258735 IP (tos 0x0, ttl  64, id 36373, offset 0, flags [DF], proto:
TCP (6), length: 52) ldap.36363 > ldap.ldap: ., cksum 0xe62d (correct),
202:202(0) ack 15 win 257 <nop,nop,timestamp 129781903 129781903>
12:33:48.264465 IP (tos 0x0, ttl  64, id 23789, offset 0, flags [DF], proto:
TCP (6), length: 132) ldap.ssh > ldap.48322: P 1645:1725(80) ack 1029 win
279 <nop,nop,timestamp 129781903 129781903>
12:33:48.296113 IP (tos 0x0, ttl  64, id 61466, offset 0, flags [DF], proto:
TCP (6), length: 52) ldap.48322 > ldap.ssh: ., cksum 0xf226 (correct),
1029:1029(0) ack 1725 win 290 <nop,nop,timestamp 129781913 129781903>
12:33:56.841644 IP (tos 0x0, ttl  64, id 61467, offset 0, flags [DF], proto:
TCP (6), length: 196) ldap.48322 > ldap.ssh: P 1029:1173(144) ack 1725 win
290 <nop,nop,timestamp 129784050 129781903>
12:33:56.881279 IP (tos 0x0, ttl  64, id 23790, offset 0, flags [DF], proto:
TCP (6), length: 52) ldap.ssh > ldap.48322: ., cksum 0xe0d0 (correct),
1725:1725(0) ack 1173 win 290 <nop,nop,timestamp 129784060 129784050>
12:33:59.378221 IP (tos 0x0, ttl  64, id 23791, offset 0, flags [DF], proto:
TCP (6), length: 132) ldap.ssh > ldap.48322: P 1725:1805(80) ack 1173 win
290 <nop,nop,timestamp 129784684 129784050>
12:33:59.378239 IP (tos 0x0, ttl  64, id 61468, offset 0, flags [DF], proto:
TCP (6), length: 52) ldap.48322 > ldap.ssh: ., cksum 0xdb96 (correct),
1173:1173(0) ack 1805 win 290 <nop,nop,timestamp 129784684 129784684>
12:34:03.949451 IP (tos 0x0, ttl  64, id 61469, offset 0, flags [DF], proto:
TCP (6), length: 52) ldap.48322 > ldap.ssh: F, cksum 0xd71f (correct),
1173:1173(0) ack 1805 win 290 <nop,nop,timestamp 129785826 129784684>
12:34:03.952113 IP (tos 0x0, ttl  64, id 23792, offset 0, flags [DF], proto:
TCP (6), length: 52) ldap.ssh > ldap.48322: F, cksum 0xd2a7 (correct),
1805:1805(0) ack 1174 win 290 <nop,nop,timestamp 129785827 129785826>
12:34:03.952132 IP (tos 0x0, ttl  64, id 61470, offset 0, flags [DF], proto:
TCP (6), length: 52) ldap.48322 > ldap.ssh: ., cksum 0xd2a6 (correct),
1174:1174(0) ack 1806 win 290 <nop,nop,timestamp 129785827 129785827>

Peter

On Wed, Dec 16, 2009 at 11:47 AM, nate <centos at linuxpowered.net> wrote:

> Peter Serwe wrote:
> > I've been unsuccessfully trying to get nss_ldap to work.  I've chased
> down
> > hundreds of google searches over the last 3 days, and I can't seem to get
> a
> > centos system to authenticate against ldap.
> >
> > Every daemon on the system is running into the same problem:
>
> Disable all SSL/TLS functions on the server and client and try it
> in the most basic mode, if it still doesn't work run tcpdump to
> look at what is actually being sent and what the response is.
>
> nate
>
>
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> http://lists.centos.org/mailman/listinfo/centos
>



-- 
Peter Serwe
http://truthlightway.blogspot.com/
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.centos.org/pipermail/centos/attachments/20091216/5b62e0f7/attachment.html 


More information about the CentOS mailing list