I am still trying to let freeradius query AD, but not yet too successfull. Using the following vars with ldapsearch, gives me the desired result, as shown below, but fails with rlm_ldap. ########################################## server="mchm967a.tww006.sitest.net " port=3268 identity="testrad@TDE002.SITEST.NET " mypass="mypass" basedn="dc=TDE002,dc=SITEST,dc=NET" filter="(&(sAMAccountName=28TEF003$)(objectclass=computer)) sAMAccountName userAccountControl" ######################################### ldapsearch -x -h $server -p $port -b $basedn $filter -D $identity -w $mypass -x # extended LDIF # # LDAPv3 # base <dc=TDE002,dc=SITEST,dc=NET> with scope sub # filter: (&(sAMAccountName=28TEF003$)(objectclass=computer)) # requesting: sAMAccountName userAccountControl # # 28TEF003, CAT-Computers, OU16, MchP, tde002.sitest.net dn: CN=28TEF003,OU=CAT-Computers,OU=OU16,OU=MchP,DC=tde002,DC=sitest,DC=net userAccountControl: 4096 sAMAccountName: 28TEF003$ # search result search: 2 result: 0 Success # numResponses: 2 # numEntries: 1 ################################################## So far, so good. When I take the same vars in radiusd.conf, I get: rlm_ldap: ldap_search() failed: Bad search filter radiusd.conf: ldap ldap1 { server="mchm967a.tww006.sitest.net " port=3268 identity="testrad@TDE002.SITEST.NET " mypass="mypass" basedn="dc=TDE002,dc=SITEST,dc=NET" filter="(&(sAMAccountName=28TEF003$)(objectclass=computer)) sAMAccountName userAccountControl" ldap_debug= 0xFFFF ldap_connections_number = 5 timeout = 40 timelimit = 30 net_timeout = 10 tls { } dictionary_mapping = ${raddbdir}/ldap.attrmap } rlm_ldap: Bind was successful^M rlm_ldap: performing search in dc=TDE002,dc=SITEST,dc=NET, with filter (&(sAMAccountName=28TEF003$)(objectclass=computer)) sAMAccountName userAccountControl^M ldap_search^M put_filter: "(&(sAMAccountName=28TEF003$)(objectclass=computer)) sAMAccountName userAccountControl"^M put_filter: AND^M put_filter_list "(sAMAccountName=28TEF003$)(objectclass=computer)"^M put_filter: "(sAMAccountName=28TEF003$)"^M put_filter: simple^M put_simple_filter: "sAMAccountName=28TEF003$"^M put_filter: "(objectclass=computer)"^M put_filter: simple^M put_simple_filter: "objectclass=computer"^M put_filter: default^M put_simple_filter: "sAMAccountName userAccountControl"^M rlm_ldap: ldap_search() failed: Bad search filter: (&(sAMAccountName=28TEF003$)(objectclass=computer)) sAMAccountName userAccountControl^M ldap_msgfree^M rlm_ldap: search failed^M What am I doing wrong? Thanks Norbert Wegener