Hi Alex thank for your suggestion. I have tried with: acl noTransactionLvs src 10.xxx.xxx.xxx/32 acl noTransactionLvs src 10.xxx. xxx.xxx/32 acl hasRequest has request acl dontLog all-of !hasRequest noTransactionLvs access_log none dontLog and with acl noTransactionLvs src 10.xxx.xxx.xxx/32 acl noTransactionLvs src 10.xxx. xxx.xxx/32 access_log none noTransactionLvs access_log /var/log/squid4/access.log combined !noTransactionLvs but without result. M. _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users