Thank you for your answers Antony. On packages.ubuntu.com I searched for "squid3" and here's what I've found: 12.04LTS - 3.1.19 14.04LTS - 3.3.8 16.04LTS - 3.5.12 For now the best option would be to upgrade Ubuntu to 16.04, but I cannot do it now. Also Amos has written earlier: "All the newer versions should come pre-packaged with eCAP support with no action needed on your part." I'd like to know if in squid 3.5.12 eCAP is already enabled, but I cannot find it by myself. I tried it on Ubuntu 14.04, by "sudo apt-get install squid3", squid 3.3.8 was installed (and also package libecap2 (0.2.0-1ubuntu4)), the output for "squid3 -v" was: configure options: '--build=x86_64-linux-gnu' '--prefix=/usr' '--includedir=${prefix}/include' '--mandir=${prefix}/share/man' '--infodir=${prefix}/share/info' '--sysconfdir=/etc' '--localstatedir=/var' '--libexecdir=${prefix}/lib/squid3' '--srcdir=.' '--disable-maintainer-mode' '--disable-dependency-tracking' '--disable-silent-rules' '--datadir=/usr/share/squid3' '--sysconfdir=/etc/squid3' '--mandir=/usr/share/man' '--enable-inline' '--enable-async-io=8' '--enable-storeio=ufs,aufs,diskd,rock' '--enable-removal-policies=lru,heap' '--enable-delay-pools' '--enable-cache-digests' '--enable-underscores' '--enable-icap-client' '--enable-follow-x-forwarded-for' '--enable-auth-basic=DB,fake,getpwnam,LDAP,MSNT,MSNT-multi-domain,NCSA,NIS,PAM,POP3,RADIUS,SASL,SMB' '--enable-auth-digest=file,LDAP' '--enable-auth-negotiate=kerberos,wrapper' '--enable-auth-ntlm=fake,smb_lm' '--enable-external-acl-helpers=file_userip,kerberos_ldap_group,LDAP_group,session,SQL_session,unix_group,wbinfo_group' '--enable-url-rewrite-helpers=fake' '--enable-eui' '--enable-esi' '--enable-icmp' '--enable-zph-qos' *'--enable-ecap'* '--disable-translation' '--with-swapdir=/var/spool/squid3' '--with-logdir=/var/log/squid3' '--with-pidfile=/var/run/squid3.pid' '--with-filedescriptors=65536' '--with-large-files' '--with-default-user=proxy' '--enable-linux-netfilter' 'build_alias=x86_64-linux-gnu' 'CFLAGS=-g -O2 -fPIE -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security -Wall' 'LDFLAGS=-Wl,-Bsymbolic-functions -fPIE -pie -Wl,-z,relro -Wl,-z,now' 'CPPFLAGS=-D_FORTIFY_SOURCE=2' 'CXXFLAGS=-g -O2 -fPIE -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security' So actually this squid release is already configured with "--enable-ecap" and all I need to do is to set "ecap_enable" in configuration file to "on" (and other stuff mentioned in documentation <http://e-cap.org/Documentation> ) and it'll work fine? -- View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/Is-it-possible-to-modify-cached-object-tp4681073p4681396.html Sent from the Squid - Users mailing list archive at Nabble.com. _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users