Hi, On Mon, 14 Mar 2005, Gavin McCullagh wrote:
> just thought I'd post this to save anyone else the pain. > > After much fighting with the wonderfully non-verbose squid ldap_auth > program I have managed to get Squid to authenticate users against the > Skolelinux LDAP database. Okay, this time I think I do have this working. And there was me thinking it was painful last time. Still, I have learnt much about LDAP and squid along the way. I must admit that squid acls still confuse me a little so if someone sees something wrong please feel free to correct it. In /etc/squid/squid.conf: 1. Set up general authentication of users via ldap_auth. ====================== # TAG: auth_param auth_param basic program /usr/lib/squid/ldap_auth -ZZ -b "ou=People,dc=skole,dc=skolelinux,dc=no" ldap auth_param basic children 30 auth_param basic realm Squid proxy-caching web server auth_param basic credentialsttl 1 hours ====================== 2. Now that you can authenticate the users, tell it how to check that authenticated users are in a chosen group using squid_ldap_group. ====================== # TAG: external_acl_type external_acl_type ldap_group %LOGIN /usr/lib/squid/squid_ldap_group -ZZ -b "ou=Group,dc=skole,dc=skolelinux,dc=no" -f "(&(objectclass=posixGroup)(cn=%a)(member=%v))" -B "ou=People,dc=skole,dc=skolelinux,dc=no" -F uid="%s" ldap ====================== 3. Create an acl (access control list) requiring first authentication and then the group check. The word "teachers" corresponds to a unix group and several can be placed here. ====================== # TAG: acl acl password proxy_auth REQUIRED acl password_group external ldap_group teachers ====================== 4. Allow that acl users http access and remove the allow to schoolnet and ltspnet ====================== # TAG: http_access #http_access allow schoolnet #http_access allow ltspnet http_access allow password_group ====================== 5. Restart squid. A good way to debug this process is to run the two external tools on the command line and make sure they work. You run the command and type in parameters on the next line. If it replies OK you're good, if you get ERR or nothing at all things are not working. eg [EMAIL PROTECTED] > /usr/lib/squid/ldap_auth -ZZ -b "ou=People,dc=skole,dc=skolelinux,dc=no" ldap gavinm <mypassword> OK [EMAIL PROTECTED] > /usr/lib/squid/squid_ldap_group -ZZ -b "ou=Group,dc=skole,dc=skolelinux,dc=no" -f "(&(objectclass=posixGroup)(cn=%a)(member=%v))" -B "ou=People,dc=skole,dc=skolelinux,dc=no" -F uid="%s" ldap gavinm teachers OK Hope this helps someone, Gavin -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
