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Squid Web Cache documentation

🔗 Squid 3.3

today Squid-3.3 is CONSIDERED DANGEROUS as the security people say. Due to unfixed vulnerabilities CVE-2014-7141, CVE-2014-7142 and CVE-2014-6270 and any other recently discovered issues.
Dec 2013 the Squid-3.3 series became DEPRECATED with the release of Squid-3.4 series
Feb 2013 Released for production use.

The features have been set and large code changes are reserved for later versions.

Additions are limited to:

Features ported from 2.7 in this release:

Basic new features in 3.3:

The intention with this series is to improve the upgrade path and concentrate on further portability improvements. Squid-2.7 missing features are listed as regressions in http://www.squid-cache.org/Versions/v3/3.3/RELEASENOTES.html#s6

Packages of squid 3.3 source code are available at http://www.squid-cache.org/Versions/v3/3.3/

🔗 Security Advisories

See our Advisories list.

🔗 Open Bugs

🔗 Squid-3.3 default config

From 3.3 a few performance improvements have been done. The manager regex ACLs have been moved after the DoS and protocol smuggling attack protections.

http_port 3128

refresh_pattern ^ftp:           1440    20%     10080
refresh_pattern ^gopher:        1440    0%      1440
refresh_pattern -i (/cgi-bin/|\?) 0     0%      0
refresh_pattern .               0       20%     4320

acl localnet src     # RFC 1918 possible internal network
acl localnet src  # RFC 1918 possible internal network
acl localnet src # RFC 1918 possible internal network
acl localnet src fc00::/7       # RFC 4193 local private network range
acl localnet src fe80::/10      # RFC 4291 link-local (directly plugged) machines

acl SSL_ports port 443          # https

acl Safe_ports port 80          # http
acl Safe_ports port 21          # ftp
acl Safe_ports port 443         # https
acl Safe_ports port 70          # gopher
acl Safe_ports port 210         # wais
acl Safe_ports port 1025-65535  # unregistered ports
acl Safe_ports port 280         # http-mgmt
acl Safe_ports port 488         # gss-http
acl Safe_ports port 591         # filemaker
acl Safe_ports port 777         # multiling http


http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
http_access allow localhost manager
http_access deny manager
http_access allow localnet
http_access allow localhost
http_access deny all
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