Dear I have this squid version : Squid Cache: Version 3.2.0.13-20111125-r11436 configure options: '--prefix=/usr' '--includedir=/include' '--mandir=/share/man' '--infodir=/share/info' '--localstatedir=/var' '--libexecdir=/lib/squid3' '--disable-maintainer-mode' '--disable-dependency-tracking' '--srcdir=.' '--datadir=/usr/share/squid3' '--sysconfdir=/etc/squid3' '--enable-gnuregex' '--enable-forward-log' '--enable-removal-policy=heap' '--enable-follow-x-forwarded-for' '--enable-http-violations' '--enable-large-cache-files' '--enable-removal-policies=lru,heap' '--enable-err-languages=English' '--enable-default-err-language=English' '--with-maxfd=32000' '--with-large-files' '--disable-dlmalloc' '--with-pthreads' '--enable-esi' '--enable-storeio=aufs,diskd,ufs,rock' '--with-aufs-threads=10' '--with-maxfd=16384' '--enable-x-accelerator-vary' '--with-dl' '--enable-truncate' '--enable-linux-netfilter' '--with-filedescriptors=16384' '--enable-wccpv2' '--enable-eui' '--enable-auth' '--enable-auth-basic' '--enable-auth-digest' '--enable-auth-negotiate-helpers' '--enable-log-daemon-helpers' '--enable-url-rewrite-helpers' '--enable-auth-ntlm' '--with-default-user=squid' '--enable-icap-client' '--enable-cache-digests' '--enable-icap-support' '--enable-poll' '--enable-epoll' '--enable-async-io' '--enable-delay-pools' 'CFLAGS=-DNUMTHREADS=60 -O3 -pipe -fomit-frame-pointer -funroll-loops -ffast-math -fno-exceptions' I cannot browse trough Internet and receive many errors in syslog : Nov 27 23:32:57 gibrat squid[15355]: SECURITY ALERT: By user agent: Opera/9.80 (X11; Linux i686; U; fr) Presto/2.9.168 Version/11.52 Nov 27 23:32:57 gibrat squid[15355]: SECURITY ALERT: on URL: http://192.168.1.1:49152/rootDesc.xml Nov 27 23:32:59 gibrat squid[15355]: SECURITY ALERT: By user agent: Opera/9.80 (X11; Linux i686; U; fr) Presto/2.9.168 Version/11.52 Nov 27 23:32:59 gibrat squid[15355]: SECURITY ALERT: on URL: http://clients1.google.com/complete/search?q=no-ip&client=opera&hl=fr Is it normal ?? Best regards