Newbies What Next ? News Forums Calendar


News Sections
General News (3987/0)
Reviews (637/0)
Press Releases (465/0)
Distributions (197/0)
Software (911/0)
Hardware (537/0)
Security (192/0)
Tutorials (356/0)
Off Topic (181/0)

User Functions


Don't have an account yet? Sign up as a New User

There are no upcoming events



Squid is a high-performance proxy caching server and web cache daemon. It supports FTP, gopher and HTTP data objects.

Squid has a wide variety of uses, from speeding up a web server by caching repeated requests, caching web, DNS and other computer network lookups for a group of people sharing network resources; to aiding security by filtering traffic.

Squid consists of a main server program squid, a Domain Name System lookup program dnsserver, some optional programs for rewriting requests and performing authentication, together with some management and client tools.

Squid offers a rich access control, authorization and logging environment to develop web proxy and content serving applications.

 Squid 3.5.4

Free to download



National Laboratory for Applied Networking Research (NLANR) and Internet volunteers


System Requirements

Users Guide, Blog, Wiki, FAQ, Squid Tutorial, Mailing Lists, Transparent Web Proxy, Squid config

Selected Reviews:

Features include:

  • Web proxy
    • Caching to reduce access time and bandwidth use
    • Keeps meta data and especially hot objects cached in RAM
    • Caches DNS lookups
    • Supports non-blocking DNS lookups
    • Implements negative chacking of failed requests
  • Squid caches can be arranged in a hierarchy or mesh for additional bandwidth savings
  • Enforce site-usage policies with extensive access controls
  • Anonymize connections, such as disabling or changing specific header fields in a client's HTTP request
  • Reverse proxy
  • Media-range limitations
  • Supports SSL
  • Support for IPv6
  • Error Page Localization - error pages presented by Squid may now be localized per-request to match the visitors local preferred language
  • Connection Pinning (for NTLM Auth Passthrough) - a workaround which permits Web servers to use Microsoft NTLM Authentication instead of HTTP standard authentication through a web proxy
  • Quality of Service (QoS) Flow support
    • Select a TOS/Diffserv value to mark local hits
    • Select a TOS/Diffserv value to mark peer hits
    • Selectively mark only sibling or parent requests
    • Allows any HTTP response towards clients to have the TOS value of the response coming from the remote server preserved
    • Mask certain bits in the TOS received from the remote server, before copying the value to the TOS send towards clients
  • SSL Bump (for HTTPS Filtering and Adaptation) - Squid-in-the-middle decryption and encryption of CONNECT tunneled SSL traffic, using configurable client- and server-side certificates
  • eCAP Adaptation Module support
  • ICAP Bypass and Retry enhancements - ICAP is now extended with full bypass and dynamic chain routing to handle multiple adaptation services.
  • ICY streaming protocol support - commonly known as SHOUTcast multimedia streams
  • Dynamic SSL Certificate Generation
  • Support for the Internet Content Adaptation Protocol (ICAP)
  • Full request logging

Return to Web Caches Home Page

Bookmark and Share

Last Updated Monday, May 25 2015 @ 11:31 AM EDT

We have written a range of guides highlighting excellent free books for popular programming languages. Check out the following guides: C, C++, C#, Java, JavaScript, CoffeeScript, HTML, Python, Ruby, Perl, Haskell, PHP, Lisp, R, Prolog, Scala, Scheme, Forth, SQL, Node.js (new), Fortran (new), Erlang (new), Pascal (new), and Ada (new).

Group Tests
100 Essential Apps
All Group Tests

Top Free Software
5 Office Suites
3 Lean Desktops
7 Document Processors
4 Distraction Free Tools
9 Project Management
4 Business Solutions
9 Groupware Apps
14 File Managers
10 Databases
21 Backup Tools
21 Productivity Tools
5 Note Taking Apps
9 Terminal Emulators
21 Financial Tools
5 Bitcoin Clients
21 Text Editors
21 Video Emulators
21 Home Emulators
42 Graphics Apps
6 CAD Apps
42 Scientific Apps
10 Web Browsers
42 Email Apps
12 Instant Messaging
10 IRC Clients
7 Twitter Clients
12 News Aggregators
11 VoIP Apps
42 Best Games
9 Steam Games
42 Audio Apps
5 Music Streaming
42 Video Apps
5 YouTube Tools
80 Security Apps
9 System Monitoring
8 Geometry Apps
Free Console Apps
14 Multimedia
4 Audio Grabbers
9 Internet Apps
3 HTTP Clients
5 File Managers
8 Compilers
9 IDEs
9 Debuggers
7 Revision Control Apps
6 Doc Generators
Free Web Software
21 Web CMS
14 Wiki Engines
8 Blog Apps
6 eCommerce Apps
5 Human Resource Apps
10 ERP
10 CRM
6 Data Warehouse Apps
8 Business Intelligence
6 Point-of-Sale

Other Articles
Migrating from Windows
Back up your data
20 Free Linux Books
24 Beginner Books
12 Shell Scripting Books

Older Stories
Sunday 04/12
  • First Peek at XBian on the Raspberry Pi 2 (0)

  • Saturday 04/04
  • First Look at OSMC RC on the Raspberry Pi 2 (0)

  • Sunday 03/29
  • First Steps with OpenELEC on the Raspberry Pi 2 (0)
  • Ubuntu MATE 15.04 for Raspberry Pi 2 (0)

  • Monday 03/16
  • MIPS Creator CI20 v Raspberry Pi 2 (0)
  • Raspberry Pi 2: Raspbian (ARMv6) v Linaro (ARMv7) (0)

  • Friday 03/06
  • Raspberry Pi 2 review (0)

  • Sunday 02/22
  • Chess in a Few Bytes (0)
  • Learn the Art of Computer Programming With These Great Free Beginner Books (2)
  • CD Audio Grabbers (0)

  • Vote

    What Linux distribution do you run on your main computer?

    828 votes | 3 comments

    Built with GeekLog and phpBB
    Comments to the webmaster are welcome
    Copyright 2009 - All rights reserved