Squid Socks Proxy


How to enable SOCKS5 for Squid proxy? - Server Fault

How to enable SOCKS5 for Squid proxy? – Server Fault

Squid’d default is to operate as an HTTP proxy; however, this FAQ says “No changes are necessary to use Squid with socks5. Simply add the usual -Dbind=SOCKSbind etc., to the compile line and -lsocks to the link line. ”
That sounds great and all except that I don’t code c/c++ beyond knowing the basic syntax so typically when I compile something, it’s. /configure and. /make. Occasionally I have to modify a makefile’s compile line but I’m not sure about linking here (Though I get the concept of linking).
It’s also a bit confusing to interpret exactly what to do by “add the usual X etc., ” so if someone could point out the exact steps here it would be a great help since they don’t seem to be detailed anywhere. It doesn’t sound hard.
I already have squid compiled and running properly for HTTP connections but SOCKS support is a must.
asked Dec 14 ’16 at 4:09
xendixendi3445 gold badges6 silver badges21 bronze badges
Have a look at this page. It talks about squid socks support and how you can build it to support SOCKS connections. The status is “testing”. So, you may need to think about using it for production.
When building squid, you need to define these variables:
export CFLAGS=” -Dbind=SOCKSbind ”
export CXXFLAGS=” -Dbind=SOCKSbind ”
export LDADD=” -lsocks ”
to modify build and link options.
Also, you can pass these variables to configure script. If you have already built squid, you can find out the current values using squid -v. This will show you squid version along with configure and build options.
answered Dec 14 ’16 at 8:17
KhaledKhaled34. 8k7 gold badges64 silver badges97 bronze badges
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Squid (software) - Wikipedia

Squid (software) – Wikipedia

SquidDeveloper(s)Duane Wessels, Henrik Nordström, Amos Jeffries, Alex Rousskov, Francesco Chemolli, Robert Collins, Guido Serassio and volunteers[1]Initial releaseJuly 1996Stable release4. 15[2]
/ 10 May 2021; 4 months agoRepository inC++Operating systemBSD, Linux, Unix, Windows[3]TypeProxy serverLicenseGNU GPLv2[4]Website
Squid is a caching and forwarding HTTP web proxy. It has a wide variety of uses, including 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, and aiding security by filtering traffic. Although primarily used for HTTP and FTP, Squid includes limited support for several other protocols including Internet Gopher, SSL, [6] TLS and HTTPS. Squid does not support the SOCKS protocol, unlike Privoxy, with which Squid can be used in order to provide SOCKS support.
Squid was originally designed to run as a daemon on Unix-like systems. A Windows port was maintained up to version 2. 7. New versions available on Windows use the Cygwin environment. [7] Squid is free software released under the GNU General Public License.
Squid was originally developed as the Harvest object cache, [8] part of the Harvest project at the University of Colorado Boulder. [9][10] Further work on the program was completed at the University of California, San Diego and funded via two grants from the National Science Foundation. [11] Duane Wessels forked the “last pre-commercial version of Harvest” and renamed it to Squid to avoid confusion with the commercial fork called Cached 2. 0, which became NetCache. [12][13] Squid version 1. 0. 0 was released in July 1996. [12]
Squid is now developed almost exclusively through volunteer efforts.
Basic functionality[edit]
After a Squid proxy server is installed, web browsers can be configured to use it as a proxy HTTP server, allowing Squid to retain copies of the documents returned, which, on repeated requests for the same documents, can reduce access time as well as bandwidth consumption. This is often useful for Internet service providers to increase speed to their customers, and LANs that share an Internet connection. Because the caching servers are controlled by the web service operator, caching proxies do not anonymize the user and should not be confused with anonymizing proxies.
A client program (e. g. browser) either has to specify explicitly the proxy server it wants to use (typical for ISP customers), or it could be using a proxy without any extra configuration: “transparent caching”, in which case all outgoing HTTP requests are intercepted by Squid and all responses are cached. The latter is typically a corporate set-up (all clients are on the same LAN) and often introduces the privacy concerns mentioned above.
Squid has some features that can help anonymize connections, such as disabling or changing specific header fields in a client’s HTTP requests. Whether these are set, and what they are set to do, is up to the person who controls the computer running Squid. People requesting pages through a network which transparently uses Squid may not know whether this information is being logged. [14] Within UK organisations at least, users should be informed if computers or internet connections are being monitored. [15]
Reverse proxy[edit]
The above setup—caching the contents of an unlimited number of webservers for a limited number of clients—is the classical one. Another setup is “reverse proxy” or “webserver acceleration” (using _port 80 accel vhost). In this mode, the cache serves an unlimited number of clients for a limited number of—or just one—web servers.
As an example, if is a “real” web server, and is the Squid cache server that “accelerates” it, the first time any page is requested from, the cache server would get the actual page from, but later requests would get the stored copy directly from the accelerator (for a configurable period, after which the stored copy would be discarded). The end result, without any action by the clients, is less traffic to the source server, meaning less CPU and memory usage, and less need for bandwidth. This does, however, mean that the source server cannot accurately report on its traffic numbers without additional configuration, as all requests would seem to have come from the reverse proxy. A way to adapt the reporting on the source server is to use the X-Forwarded-For HTTP header reported by the reverse proxy, to get the real client’s IP address.
It is possible for a single Squid server to serve both as a normal and a reverse proxy simultaneously. For example, a business might host its own website on a web server, with a Squid server acting as a reverse proxy between clients (customers accessing the website from outside the business) and the web server. The same Squid server could act as a classical web cache, caching HTTP requests from clients within the business (i. e., employees accessing the internet from their workstations), so accelerating web access and reducing bandwidth demands.
Media-range limitations[edit]
For example, a feature of the HTTP protocol is to limit a request to the range of data in the resource being referenced. This feature is used extensively by video streaming websites such as YouTube, so that if a user clicks to the middle of the video progress bar, the server can begin to send data from the middle of the file, rather than sending the entire file from the beginning and the user waiting for the preceding data to finish loading.
Partial downloads are also extensively used by Microsoft Windows Update so that extremely large update packages can download in the background and pause halfway through the download, if the user turns off their computer or disconnects from the Internet.
The Metalink download format enables clients to do segmented downloads by issuing partial requests and spreading these over a number of mirrors.
Squid can relay partial requests to the origin web server. In order for a partial request to be satisfied at a fast speed from cache, Squid requires a full copy of the same object to already exist in its storage.
If a proxy video user is watching a video stream and browses to a different page before the video completely downloads, Squid cannot keep the partial download for reuse and simply discards the data. Special configuration is required to force such downloads to continue and be cached. [16]
Supported operating systems[edit]
Squid can run on the following operating systems:
Digital Unix
OS/2 (including ArcaOS and eComStation)[17]
SCO OpenServer
See also[edit]
Web accelerator which discusses host-based HTTP acceleration
Proxy server which discusses client-side proxies
Reverse proxy which discusses origin-side proxies
Comparison of web servers
^ “Who looks after the Squid project? “.
^ “Squid version 4”. Retrieved 5 June 2021.
^ “What is the Best OS for Squid? “.
^ “Squid License”.
^ “Squid Project Logo”. Retrieved 6 July 2014.
^ “Squid FAQ: About Squid”. 13 February 2007. Archived from the original on 29 December 2007. Retrieved 13 February 2007.
^ “Squid 3. 5 for Windows”. February 2019. Current build is based on Squid 3. 5. 1 build for Cygwin Windows 64 bit
^ Bowman, Peter B. Danzig, Darren R. Hardy, Udi Manper, Michael F. Schwartz, The Harvest information discovery and access system, Computer Networks and ISDN Systems, Volume 28, Issues 1–2, December 1995, Pages 119–125. doi:10. 1016/0169-7552(95)00098-5
^ Squid intro, on the Squid website
^ Harvest cache now available as an “d accelerator”, by Mike Schwartz on the -wg mailing list, Tue, 4 April 1995, as forwarded by Brian Behlendorf to the Apache HTTP Server developers’ mailing list
^ “Squid Sponsors”. Archived from the original on 11 May 2007. Retrieved 13 February 2007. The NSF was the primary funding source for Squid development from 1996–2000. Two grants (#NCR-9616602, #NCR-9521745) received through the Advanced Networking Infrastructure and Research (ANIR) Division were administered by the University of California San Diego
^ a b Duane Wessels Squid and ICP: Past, Present, and Future, Proceedings of the Australian Unix Users Group. September 1997, Brisbane, Australia
^ “”. Archived from the original on 12 November 1996. Retrieved 7 August 2012.
^ See the documentation for header_access and header_replace for further details.
^ See, for example, Computer Monitoring In The Workplace and Your Privacy
^ “Squid Configuration Reference”. Retrieved 26 November 2012.
^ OS/2 Ports by Paul Smedley, OS/2 Ports
Further reading[edit]
Wessels, Duane (2004). Squid: The Definitive Guide. O’Reilly Media. ISBN 978-0-596-00162-9.
Saini, Kulbir (2011). Squid Proxy Server 3. 1: Beginner’s Guide. Packt Publishing. ISBN 978-1-849-51390-6.
External links[edit]
Official website
Squid Blog
Squid User’s Guide
Squid Transparent Proxy For DD-WRT
Squid reverse proxy — Create a reverse proxy with Squid
Configuration Manual — ViSolve Squid Configuration Manual Guide
Configuration Manual — Authoritative Squid Configuration Options
“Solaris Setup”. Archived from the original on 15 January 2008. — Setup squid on solaris
SQUID – Installation on CentOS, Fedora and Red Hat
Ways to setup Squid proxy server and helpful tips | AT&T Cybersecurity

Ways to setup Squid proxy server and helpful tips | AT&T Cybersecurity

This blog was written by an independent guest blogger.
A squid proxy server has two major functions. First, it is an intermediary proxy. Second, it provides cache services for popular network protocols including HTTP and FTP. The use of proxies and cache services makes up a better internet user experience.
Proxies provide added layers of security and cache services that make loading processes faster. Obviously, getting both services from a single provider is highly efficient.
What is a Squid proxy server?
Squid is a Unix-based proxy server that can do both caching and proxying. It can cache any web content to the user or requestor that is from a closer data storage point. It frequently caches large media files and web pages to reduce bandwidth congestion. Thus it decreases loading periods.
Squid supports several caching protocols, such as hypertext caching protocols (HTCP), internet cache protocol (ICP), cache array routing protocol (CARP), and web cache communication protocol (WCCP). It also processes caching requests from Domain Name Server (DNS) lookups and Secure Sockets Layer (SSL).
You wouldn’t want to miss enjoying the benefits of Squid proxy servers. Here are some ways to set the server up along with tips to maximize your use out of it.
Ways to setup a Squid proxy server
Squid proxy servers are usually installed in a separate server from the servers with the original content.
The first thing to do is to update your server to install the squid proxy server. Check if the server is running by checking its status in the code, before starting to configure the system.
Adding allowable sites
In the configuration process, you sift through the sites that are allowable through the intermediary web proxy. These sites are considered as part of your ACL or access control list. These are the only sites that the Squid server will proxy and cache data for.
Go through the list of acceptable websites and input in the code. Once all of these are encoded in, restart the proxy and check the status afterward.
It’s safe to include an open port in the control list. The open port acts as the passageway for the other sites that were not defined and placed under the list.
Blocking websites
As much as you can configure the server to include sites to process, you can also block access to several websites.
In order to carry out this requirement, create a folder under the access command list that will hold all the restricted sites. Limiting internet access is one of the prominent uses of proxy servers, in general.
After listing the blocked or restricted sites, a prompt will appear in the code. Aside from blocked sites, you can also create a list of blocked keywords. Many companies configure their proxies to block access to several social networking sites, such as Facebook, Twitter, and Instagram.
Once the list is finalized, make sure to save the file and restart the proxy to confirm.
Configuring additional authentication
To install an added layer of protection in your Squid proxy, install d-tools. This lets you create a password for the proxy. Make sure to assign the proxy server as the file owners. Otherwise, your access will be restricted as well.
You can also add a pxuser using htpasswd utility. This calls for a different and much stronger password. Make sure not to forget this username and password. This will be used to authorize all proxy connections later on.
Helpful tips to note
First of all, every time you change or configure the components of the proxy server, make a copy of the original file. Much like editing an article or creating digital art, it’s important to have layers or to keep the previous copies to note the differences.
In this manner, if something goes wrong after the attempted configuration, you can easily pull out and use the previous code. Aside from that, you can also do some troubleshooting by comparing the old and new code. It’s easy to point out the differences or the mistakes done in the newer version.
You need to input a command to keep the original file before configuration.
The next tip is to remember to constantly rotate the log files. Rotating large files leads to better proxy performance.
Also, always be careful in labeling your ACL. A proxy will not process or allow any domain that shares a name with another. This measure, however demanding it may seem, provides an added layer of protection. More than that, it supports the Squid proxy in carrying out one of its main tasks.
Another tip that helps improve the loading time of content is that you can configure the Squid proxy server to limit the downloadable file size. The configuration must state the maximum allowable size. Any file larger than that will not be processed by the server. The limit is applicable to all users and all file types. However, the limit can also be specified per user.
This method of limiting the downloadable size is a common practice in office set-ups that share servers. It is one way of decongesting the bandwidth and increasing the performance of the server for all users.
In the same manner, the proxy server can also limit the maximum size for uploading files.
Since caching is one of the main tasks of Squid proxies, it is designed to automatically cache the data of the websites under the ACL. But if some of the sites under the list do not need caching, you can exempt them from the process. You can pinpoint the websites to not cache their data regularly.
All you need to do is create a file under the access list and label it as no_cache domain. Once set, configure and restart the system.
The use of web proxies is getting more prevalent as more users are discovering its benefits. From added online security to a better internet experience, proxies are becoming more in demand even to individual and casual users.
Squid proxies, in particular, appeal to users who want the two-in-one deal that it provides. It’s not only an efficient proxy server, it’s a dependable caching tool, too. There’s no need to install separate servers to gain the benefits of a single Squid proxy.

Frequently Asked Questions about squid socks proxy

Is squid a SOCKS proxy?

Squid is a caching and forwarding HTTP web proxy. … Although primarily used for HTTP and FTP, Squid includes limited support for several other protocols including Internet Gopher, SSL, TLS and HTTPS. Squid does not support the SOCKS protocol, unlike Privoxy, with which Squid can be used in order to provide SOCKS support.

What does a squid proxy do?

What is a Squid proxy server? Squid is a Unix-based proxy server that can do both caching and proxying. It can cache any web content to the user or requestor that is from a closer data storage point. It frequently caches large media files and web pages to reduce bandwidth congestion.May 27, 2021

Is SOCKS and proxy the same?

SOCKS works on any kind of network protocol on any port. … Unlike SOCKS proxies, however, HTTP proxies understand and interpret the network traffic between the client and server (HTTP protocol). HTTP proxy can be used to handle only HTTP traffic and in a smart way.Jan 20, 2020

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