I'm trying to configure squid with my own external helper. But doesn't take Im getting error msg [root@host1 squid]# ./sbin/squid 2013/03/21 01:41:19| Can't use proxy auth because no authentication schemes are fully configured. FATAL: ERROR: Invalid ACL: acl test2 external test1 Squid Cache (Version 3.1.23): Terminated abnormally. CPU Usage: 0.011 seconds = 0.006 user + 0.005 sys Maximum Resident Size: 0 KB Page faults with physical i/o: 0 My squid conf as flow [root@host1 squid]# grep ^[A-Za-z] etc/squid.conf external_acl_type test1 %LOGIN /root/squidauthentication/test1 acl test2 external test1 http_access allow test2 http_access deny all acl manager proto cache_object acl localhost src 127.0.0.1/32 ::1 acl to_localhost dst 127.0.0.0/8 0.0.0.0/32 ::1 acl localnet src 10.0.0.0/8 # RFC1918 possible internal network acl localnet src 172.16.0.0/12 # RFC1918 possible internal network acl localnet src 192.168.0.0/16 # RFC1918 possible internal network acl localnet src fc00::/7 # RFC 4193 local private network range acl localnet src fe80::/10 # RFC 4291 link-local (directly plugged) machines acl lan src 192.168.0.0/24 # my lan acl SSL_ports port 443 acl Safe_ports port 80 # http acl Safe_ports port 21 # ftp acl Safe_ports port 443 # https acl Safe_ports port 70 # gopher acl Safe_ports port 210 # wais acl Safe_ports port 1025-65535 # unregistered ports acl Safe_ports port 280 # http-mgmt acl Safe_ports port 488 # gss-http acl Safe_ports port 591 # filemaker acl Safe_ports port 777 # multiling http acl CONNECT method CONNECT http_access allow lan http_access allow manager localhost http_access deny manager http_access deny !Safe_ports http_access deny CONNECT !SSL_ports http_access allow localnet http_access allow localhost http_access deny all http_port 3128 cache_dir ufs /usr/local/squid/var/cache 1000 16 256 cache_mem 50 MB coredump_dir /usr/local/squid/var/cache refresh_pattern ^ftp: 1440 20% 10080 refresh_pattern ^gopher: 1440 0% 1440 refresh_pattern -i (/cgi-bin/|\?) 0 0% 0 refresh_pattern . 0 20% 4320 visible_hostname host1.bigmama.com cache_effective_user squid cache_effective_group squid