Squid 3.5

Jan 2015

Released for production use.

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

  • Additions are limited to:
  • Security fixes
  • Stability fixes
  • Bug fixes
  • Documentation updates

Features ported from 2.7 in this release:

Basic new features in 3.5:

  • eCAP version 1.0 support
  • Authentication helper query extensions (see auth_param)

  • Caching large (>32KB) objects in Rock storage

  • Extended cache HIT/MISS decision control (see send_hit, store_miss)

  • Logging of transaction start time (see logformat)

  • Adaptation service performed ACL test
  • Support named services
  • Upgraded squidclient tool
  • Helper support for concurrency channels (Digest Authentication, StoreID, URL-rewrite)
  • Native FTP protocol relay

  • Initial support for PROXY protocol

  • Basic authentication MSNT helper changes

Added in 3.5.13:

  • Support Elliptic Curve ciphers in TLS

Features removed in 3.5:

  • COSS storage type has been superceded by Rock storage type.

  • dnsserver helper has been superceded by DNS internal client.
  • DNS helper API has been superceded by DNS internal client.

The intention with this series is to improve performance and HTTP support. Some remaining Squid-2.7 missing features are listed as regressions in http://www.squid-cache.org/Versions/v3/3.5/RELEASENOTES.html#ss5.1

Packages of what will become squid 3.5 source code are available at http://www.squid-cache.org/Versions/v3/3.5/

Security Advisories

See our Advisories list.

Open Bugs

Squid-3.5 default config

From 3.5 a few performance improvements have been done. The manager regex ACLs have been moved after the DoS and protocol smuggling attack protections.

  • /!\

    This minimal configuration does not work with versions earlier than 3.2 which are missing special cleanup done to the code.

http_port 3128

acl localnet src 10.0.0.0/8     # RFC1918 possible internal network
acl localnet src 172.16.0.0/12  # RFC1918 possible internal network
acl localnet src 192.168.0.0/16 # RFC1918 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

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 280         # http-mgmt
acl Safe_ports port 488         # gss-http
acl Safe_ports port 591         # filemaker
acl Safe_ports port 777         # multiling http
acl Safe_ports port 1025-65535  # unregistered ports

acl CONNECT method CONNECT

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

#
# INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS
#

http_access allow localnet
http_access allow localhost
http_access deny all

coredump_dir /squid/var/cache/squid

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

Squid-3.5 (last edited 2016-07-04 13:13:09 by AmosJeffries)