Thanks, Missed that I need to install squid-helpers "yum install squid-helpers" :-) Now it's there. Now I use it like this: external_acl_type whitelist ttl=60 children-max=1 %SRC %DST /usr/lib64/squid/ext_sql_session_acl --user root --password config --table sessions --cond "" --debug But receive this: /2018/10/30 12:38:37.279| 82,9| external_acl.cc(600) aclMatchExternal: acl="whitelist" 2018/10/30 12:38:37.280| 82,9| external_acl.cc(629) aclMatchExternal: No helper entry available 2018/10/30 12:38:37.280| 82,2| external_acl.cc(663) aclMatchExternal: whitelist("130.238.171.59 muse.jhu.edu -") = lookup needed 2018/10/30 12:38:37.280| 82,2| external_acl.cc(667) aclMatchExternal: "130.238.171.59 muse.jhu.edu -": queueing a call. 2018/10/30 12:38:37.280| 82,2| external_acl.cc(1031) Start: fg lookup in 'whitelist' for '130.238.171.59 muse.jhu.edu -' 2018/10/30 12:38:37.280| 82,4| external_acl.cc(1071) Start: externalAclLookup: looking up for '130.238.171.59 muse.jhu.edu -' in 'whitelist'. 2018/10/30 12:38:37.280| Starting new whitelist helpers... 2018/10/30 12:38:37.282| 82,4| external_acl.cc(1086) Start: externalAclLookup: will wait for the result of '130.238.171.59 muse.jhu.edu -' in 'whitelist' (ch=0x26782c8). 2018/10/30 12:38:37.282| 82,2| external_acl.cc(670) aclMatchExternal: "130.238.171.59 muse.jhu.edu -": return -1. Received: Channel=, UID='' Query: SELECT '' as 'user', '' as 'tag' FROM sessions WHERE (id = ?) UID queried: '' Rows: 0 2018/10/30 12:38:37.420| 82,2| external_acl.cc(958) externalAclHandleReply: reply={result=Unknown, other: "ERR message="unknown UID ''""}/ Looking into the code of ext_sql_session_ac and line 190: *my ($cid, $uid) = ($1, $2);* I assume this will split the $_into $cid and $uid. But debug says: *Received: Channel=, UID=''* Query: SELECT '' as 'user', '' as 'tag' FROM sessions WHERE (id = ?) UID queried: '' Rows: 0 Do I have done something wrong? /Fredrik -- Sent from: http://squid-web-proxy-cache.1019090.n4.nabble.com/Squid-Users-f1019091.html _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users