Guys, I think I have to resign myself to ask the question. After a couple of days on the internet and buying the a book on SQUID i still can't make the auth_param work. Accept my apologies if this is really a dum question I am trying to use proxy_auth. I am using SQUID Proxy 3.1.12 on a slackware box running 13.37. SQUID is running like a charme but I can't get NCSA to work. SQUID was compiled with NCSA. Here is my config acl auth_users proxy_auth REQUIRED http_access allow auth_users ************************************************************* auth_param basic program /etc/squid/ncsa_auth /etc/squid/passwd - For this line, I did try to move the ncsa from /usr/libexec to /etc/squid but I did try PATH /usr/libexec/ncsa_auth as well which yielded the same error *********************************************************** auth_param basic children 5 auth_param basic realm Squid proxy-caching web server auth_param basic credentialsttl 4 hours auth_param basic casesensitive off Step 3 : run the command-line every single time I get the error: Can't use proxy auth because no authentication schemes are fully configured. Here is the output of squid -v Squid Cache: Version 3.1.12 configure options: '--prefix=/usr' '--libdir=/usr/lib64' '--sysconfdir=/etc/squid' '--localstatedir=/var/log/squid' '--datadir=/usr/share/squid' '--with-pidfile=/var/run/squid' '--mandir=/usr/man' '--with-logdir=/var/log/squid' '--enable-snmp' '--enable-auth=basic' '--enable-basic-auth-helpers=NCSA' '--enable-linux-netfilter' '--enable-async-io' '--build=x86_64-slackware-linux' 'build_alias=x86_64-slackware-linux' 'CFLAGS=-O2 -fPIC' 'CXXFLAGS=-O2 -fPIC' --with-squid=/tmp/SBo/squid-3.1.12 Again, my apologies if I am really being dum but would surely appreciate some help. Regards, zongo saiba