Squid-3.0 is CONSIDERED DANGEROUS as the security people say. Due to unfixed vulnerabilities CVE-2014-7141, CVE-2014-7142, CVE-2014-6270, CVE-2014-3609, CVE-2012-5643, CVE-2013-0189, CVE-2009-0801 and any other recently discovered issues.
the Squid-3.0 series became DEPRECATED with the release of Squid-3.1 series
Released for production use.
The features have been set and code changes are reserved for later versions. Additions are limited to Security and Bug fixes
Basic new features in 3.0
- ESI (Edge Side Includes)
- HTTP status ACL
- Control Path-MTU discovery
- Weighted Round-Robin peer selection mechanism
- Per-User bandwidth limits (class 4 delay pool)
From STABLE 2
- Port-name ACL
From STABLE 6
- umask Support
From STABLE 8
- userhash Peer Selection
- sourcehash Peer Selection
- cachemgr.cgi Sub-Actions
Packages of squid 3.0 source code are available at http://www.squid-cache.org/Versions/v3/3.0/
The only help we can provide for this is to point out that:
Squid-3.0 has been largely sponsored by the Web-Filtering user community. With features aimed at adapting and altering content in transit.
Squid-2.7 has been largely sponsored by high-performance user community. With features aimed at Caching extremely high traffic volumes in the order of Terabytes per day.