Dear Quanah, Herewith the ldapwhoami without and with -H ldap:/// to compare. Regards, Thierry server# ldapwhoami -x -D "cn=Manager,dc=be" -w password -d -1 ldap_create ldap_sasl_bind ldap_send_initial_request ldap_new_connection 1 1 0 ldap_int_open_connection ldap_connect_to_host: TCP localhost:389 ldap_new_socket: 3 ldap_prepare_socket: 3 ldap_connect_to_host: Trying ::1 389 ldap_pvt_connect: fd: 3 tm: -1 async: 0 attempting to connect: connect success ldap_open_defconn: successful ldap_send_server_request ber_scanf fmt ({it) ber: ber_dump: buf=0x55c5863df610 ptr=0x55c5863df610 end=0x55c5863df636 len=38 0000: 30 24 02 01 01 60 1f 02 01 03 04 10 63 6e 3d 4d 0$...`......cn=M 0010: 61 6e 61 67 65 72 2c 64 63 3d 62 65 80 08 70 61 anager,dc=be..pa 0020: 73 73 77 6f 72 64 ssword ber_scanf fmt ({i) ber: ber_dump: buf=0x55c5863df610 ptr=0x55c5863df615 end=0x55c5863df636 len=33 0000: 60 1f 02 01 03 04 10 63 6e 3d 4d 61 6e 61 67 65 `......cn=Manage 0010: 72 2c 64 63 3d 62 65 80 08 70 61 73 73 77 6f 72 r,dc=be..passwor 0020: 64 d ber_flush2: 38 bytes to sd 3 0000: 30 24 02 01 01 60 1f 02 01 03 04 10 63 6e 3d 4d 0$...`......cn=M 0010: 61 6e 61 67 65 72 2c 64 63 3d 62 65 80 08 70 61 anager,dc=be..pa 0020: 73 73 77 6f 72 64 ssword ldap_write: want=38, written=38 0000: 30 24 02 01 01 60 1f 02 01 03 04 10 63 6e 3d 4d 0$...`......cn=M 0010: 61 6e 61 67 65 72 2c 64 63 3d 62 65 80 08 70 61 anager,dc=be..pa 0020: 73 73 77 6f 72 64 ssword ldap_result ld 0x55c5863d6050 msgid 1 wait4msg ld 0x55c5863d6050 msgid 1 (infinite timeout) wait4msg continue ld 0x55c5863d6050 msgid 1 all 1 ** ld 0x55c5863d6050 Connections: * host: localhost port: 389 (default) refcnt: 2 status: Connected last used: Thu Mar 12 08:33:07 2020 ** ld 0x55c5863d6050 Outstanding Requests: * msgid 1, origid 1, status InProgress outstanding referrals 0, parent count 0 ld 0x55c5863d6050 request count 1 (abandoned 0) ** ld 0x55c5863d6050 Response Queue: Empty ld 0x55c5863d6050 response count 0 ldap_chkResponseList ld 0x55c5863d6050 msgid 1 all 1 ldap_chkResponseList returns ld 0x55c5863d6050 NULL ldap_int_select read1msg: ld 0x55c5863d6050 msgid 1 all 1 ber_get_next ldap_read: want=8, got=8 0000: 30 0c 02 01 01 61 07 0a 0....a.. ldap_read: want=6, got=6 0000: 01 00 04 00 04 00 ...... ber_get_next: tag 0x30 len 12 contents: ber_dump: buf=0x55c5863e0a80 ptr=0x55c5863e0a80 end=0x55c5863e0a8c len=12 0000: 02 01 01 61 07 0a 01 00 04 00 04 00 ...a........ read1msg: ld 0x55c5863d6050 msgid 1 message type bind ber_scanf fmt ({eAA) ber: ber_dump: buf=0x55c5863e0a80 ptr=0x55c5863e0a83 end=0x55c5863e0a8c len=9 0000: 61 07 0a 01 00 04 00 04 00 a........ read1msg: ld 0x55c5863d6050 0 new referrals read1msg: mark request completed, ld 0x55c5863d6050 msgid 1 request done: ld 0x55c5863d6050 msgid 1 res_errno: 0, res_error: <>, res_matched: <> ldap_free_request (origid 1, msgid 1) ldap_parse_result ber_scanf fmt ({iAA) ber: ber_dump: buf=0x55c5863e0a80 ptr=0x55c5863e0a83 end=0x55c5863e0a8c len=9 0000: 61 07 0a 01 00 04 00 04 00 a........ ber_scanf fmt (}) ber: ber_dump: buf=0x55c5863e0a80 ptr=0x55c5863e0a8c end=0x55c5863e0a8c len=0 ldap_msgfree ldap_extended_operation ldap_send_initial_request ldap_send_server_request ber_scanf fmt ({it) ber: ber_dump: buf=0x55c5863df610 ptr=0x55c5863df610 end=0x55c5863df630 len=32 0000: 30 1e 02 01 02 77 19 80 17 31 2e 33 2e 36 2e 31 0....w...1.3.6.1 0010: 2e 34 2e 31 2e 34 32 30 33 2e 31 2e 31 31 2e 33 .4.1.4203.1.11.3 ber_scanf fmt ({) ber: ber_dump: buf=0x55c5863df610 ptr=0x55c5863df615 end=0x55c5863df630 len=27 0000: 77 19 80 17 31 2e 33 2e 36 2e 31 2e 34 2e 31 2e w...1.3.6.1.4.1. 0010: 34 32 30 33 2e 31 2e 31 31 2e 33 4203.1.11.3 ber_flush2: 32 bytes to sd 3 0000: 30 1e 02 01 02 77 19 80 17 31 2e 33 2e 36 2e 31 0....w...1.3.6.1 0010: 2e 34 2e 31 2e 34 32 30 33 2e 31 2e 31 31 2e 33 .4.1.4203.1.11.3 ldap_write: want=32, written=32 0000: 30 1e 02 01 02 77 19 80 17 31 2e 33 2e 36 2e 31 0....w...1.3.6.1 0010: 2e 34 2e 31 2e 34 32 30 33 2e 31 2e 31 31 2e 33 .4.1.4203.1.11.3 ldap_result ld 0x55c5863d6050 msgid -1 wait4msg ld 0x55c5863d6050 msgid -1 (timeout 100000 usec) wait4msg continue ld 0x55c5863d6050 msgid -1 all 1 ** ld 0x55c5863d6050 Connections: * host: localhost port: 389 (default) refcnt: 2 status: Connected last used: Thu Mar 12 08:33:07 2020 ** ld 0x55c5863d6050 Outstanding Requests: * msgid 2, origid 2, status InProgress outstanding referrals 0, parent count 0 ld 0x55c5863d6050 request count 1 (abandoned 0) ** ld 0x55c5863d6050 Response Queue: Empty ld 0x55c5863d6050 response count 0 ldap_chkResponseList ld 0x55c5863d6050 msgid -1 all 1 ldap_chkResponseList returns ld 0x55c5863d6050 NULL ldap_int_select read1msg: ld 0x55c5863d6050 msgid -1 all 1 ber_get_next ldap_read: want=8, got=8 0000: 30 21 02 01 02 78 1c 0a 0!...x.. ldap_read: want=27, got=27 0000: 01 00 04 00 04 00 8b 13 64 6e 3a 63 6e 3d 4d 61 ........dn:cn=Ma 0010: 6e 61 67 65 72 2c 64 63 3d 62 65 nager,dc=be ber_get_next: tag 0x30 len 33 contents: ber_dump: buf=0x55c5863e0a80 ptr=0x55c5863e0a80 end=0x55c5863e0aa1 len=33 0000: 02 01 02 78 1c 0a 01 00 04 00 04 00 8b 13 64 6e ...x..........dn 0010: 3a 63 6e 3d 4d 61 6e 61 67 65 72 2c 64 63 3d 62 :cn=Manager,dc=b 0020: 65 e read1msg: ld 0x55c5863d6050 msgid 2 message type extended-result ber_scanf fmt ({eAA) ber: ber_dump: buf=0x55c5863e0a80 ptr=0x55c5863e0a83 end=0x55c5863e0aa1 len=30 0000: 78 1c 0a 01 00 04 00 04 00 8b 13 64 6e 3a 63 6e x..........dn:cn 0010: 3d 4d 61 6e 61 67 65 72 2c 64 63 3d 62 65 =Manager,dc=be read1msg: ld 0x55c5863d6050 0 new referrals read1msg: mark request completed, ld 0x55c5863d6050 msgid 2 request done: ld 0x55c5863d6050 msgid 2 res_errno: 0, res_error: <>, res_matched: <> ldap_free_request (origid 2, msgid 2) ldap_parse_result ber_scanf fmt ({iAA) ber: ber_dump: buf=0x55c5863e0a80 ptr=0x55c5863e0a83 end=0x55c5863e0aa1 len=30 0000: 78 1c 0a 01 00 04 00 04 00 8b 13 64 6e 3a 63 6e x..........dn:cn 0010: 3d 4d 61 6e 61 67 65 72 2c 64 63 3d 62 65 =Manager,dc=be ber_scanf fmt (x) ber: ber_dump: buf=0x55c5863e0a80 ptr=0x55c5863e0a8c end=0x55c5863e0aa1 len=21 0000: 8b 13 64 6e 3a 63 6e 3d 4d 61 6e 61 67 65 72 2c ..dn:cn=Manager, 0010: 64 63 3d 62 65 dc=be ber_scanf fmt (}) ber: ber_dump: buf=0x55c5863e0a80 ptr=0x55c5863e0aa1 end=0x55c5863e0aa1 len=0 ldap_parse_extended_result ber_scanf fmt ({eAA) ber: ber_dump: buf=0x55c5863e0a80 ptr=0x55c5863e0a83 end=0x55c5863e0aa1 len=30 0000: 78 1c 0a 01 00 04 00 04 00 8b 13 64 6e 3a 63 6e x..........dn:cn 0010: 3d 4d 61 6e 61 67 65 72 2c 64 63 3d 62 65 =Manager,dc=be ber_scanf fmt (O) ber: ber_dump: buf=0x55c5863e0a80 ptr=0x55c5863e0a8c end=0x55c5863e0aa1 len=21 0000: 8b 13 64 6e 3a 63 6e 3d 4d 61 6e 61 67 65 72 2c ..dn:cn=Manager, 0010: 64 63 3d 62 65 dc=be dn:cn=Manager,dc=be ldap_msgfree ldap_free_connection 1 1 ldap_send_unbind ber_flush2: 7 bytes to sd 3 0000: 30 05 02 01 03 42 00 0....B. ldap_write: want=7, written=7 0000: 30 05 02 01 03 42 00 0....B. ldap_free_connection: actually freed server# ldapwhoami -x -H ldap://192.168.100.11/ -D "cn=Manager,dc=be" -w password -d -1 ldap_url_parse_ext(ldap://192.168.100.11/) ldap_create ldap_url_parse_ext(ldap://192.168.100.11:389/??base) ldap_sasl_bind ldap_send_initial_request ldap_new_connection 1 1 0 ldap_int_open_connection ldap_connect_to_host: TCP 192.168.100.11:389 ldap_new_socket: 3 ldap_prepare_socket: 3 ldap_connect_to_host: Trying 192.168.100.11:389 ldap_pvt_connect: fd: 3 tm: -1 async: 0 attempting to connect: connect success ldap_open_defconn: successful ldap_send_server_request ber_scanf fmt ({it) ber: ber_dump: buf=0x559745d846c0 ptr=0x559745d846c0 end=0x559745d846e6 len=38 0000: 30 24 02 01 01 60 1f 02 01 03 04 10 63 6e 3d 4d 0$...`......cn=M 0010: 61 6e 61 67 65 72 2c 64 63 3d 62 65 80 08 70 61 anager,dc=be..pa 0020: 73 73 77 6f 72 64 ssword ber_scanf fmt ({i) ber: ber_dump: buf=0x559745d846c0 ptr=0x559745d846c5 end=0x559745d846e6 len=33 0000: 60 1f 02 01 03 04 10 63 6e 3d 4d 61 6e 61 67 65 `......cn=Manage 0010: 72 2c 64 63 3d 62 65 80 08 70 61 73 73 77 6f 72 r,dc=be..passwor 0020: 64 d ber_flush2: 38 bytes to sd 3 0000: 30 24 02 01 01 60 1f 02 01 03 04 10 63 6e 3d 4d 0$...`......cn=M 0010: 61 6e 61 67 65 72 2c 64 63 3d 62 65 80 08 70 61 anager,dc=be..pa 0020: 73 73 77 6f 72 64 ssword ldap_write: want=38, written=38 0000: 30 24 02 01 01 60 1f 02 01 03 04 10 63 6e 3d 4d 0$...`......cn=M 0010: 61 6e 61 67 65 72 2c 64 63 3d 62 65 80 08 70 61 anager,dc=be..pa 0020: 73 73 77 6f 72 64 ssword ldap_result ld 0x559745d7b070 msgid 1 wait4msg ld 0x559745d7b070 msgid 1 (infinite timeout) wait4msg continue ld 0x559745d7b070 msgid 1 all 1 ** ld 0x559745d7b070 Connections: * host: 192.168.100.11 port: 389 (default) refcnt: 2 status: Connected last used: Wed Mar 11 20:54:07 2020 ** ld 0x559745d7b070 Outstanding Requests: * msgid 1, origid 1, status InProgress outstanding referrals 0, parent count 0 ld 0x559745d7b070 request count 1 (abandoned 0) ** ld 0x559745d7b070 Response Queue: Empty ld 0x559745d7b070 response count 0 ldap_chkResponseList ld 0x559745d7b070 msgid 1 all 1 ldap_chkResponseList returns ld 0x559745d7b070 NULL ldap_int_select read1msg: ld 0x559745d7b070 msgid 1 all 1 ber_get_next ldap_read: want=8, got=0 ber_get_next failed. ldap_err2string ldap_result: Can't contact LDAP server (-1) ldap_free_request (origid 1, msgid 1) ldap_free_connection 1 1 ldap_free_connection: actually freed Op do 12 mrt. 2020 om 00:04 schreef Quanah Gibson-Mount <quanah(a)symas.com >: > > > --On Wednesday, March 11, 2020 9:59 PM +0100 Thierry Debaene > <thierry.debaene(a)gmail.com&gt; wrote: > > > > > ldap_chkResponseList returns ld 0x55bbbd3ec070 NULL > > ldap_int_select > > read1msg: ld 0x55bbbd3ec070 msgid 1 all 1 > > ber_get_next > > ldap_read: want=8, got=0 > > It successfully connected to port 389 on that IP address, but got no > response back from whatever is listening to that port on that IP address. > I'd suggest comparing the output to the same command with no -H option > specified. > > --Quanah > >