Squid.conf file for centos

They list all the options each version of Squid can accept in its squid. This minimal configuration does not work with versions earlier than 3. If you are behind a firewall which can't make direct connections to the outside world, you must use a parent cache.

Normally Squid tries to be smart and only uses cache peers when it makes sense from a perspective of global hit ratio, and thus you need to tell Squid when it can not go direct and must use a parent proxy even if it knows the request will be a cache miss.

For example, if Squid must connect directly to all servers that end with mydomain. Your internal DNS servers may not be able to lookup external domains. The first is that squid is not very tolerant to running out of disk space. So in any case make sure to leave some extra room for this, or your cache will enter an endless crash-restart cycle.

The second reason is fragmentation note, this won't apply to the COSS object storage engine - when it will be ready : filesystems can only do so much to avoid fragmentation, and in order to be effective they need to have the space to try and optimize file placement.

Get your disk fragmented, and it will most likely be your worst bottleneck, by far offsetting the modest gain you got by having more storage. Let's see an example: you have a 9Gb disk these times they're even hard to find.. First thing, manifacturers often lie about disk capacity the whole Megabyte vs Mebibyte issue , and then the OS needs some space for its accounting structures, so you'll reasonably end up with 8Gib of useable space.

If you're getting "disk full" write errors, then you definitely need to decrease your cache size. Several people on both the fwtk-users and the squid-users mailing asked about using Squid in combination with http-gw from the TIS toolkit.

The most elegant way in my opinion is to run an internal Squid caching proxyserver which handles client requests and let this server forward it's requests to the http-gw running on the firewall. Cache hits won't need to be handled by the firewall.

In this example Squid runs on the same server as the http-gw, Squid uses and http-gw uses web. First of all you will need to install httpd-tools , which comes with a tool htpasswd which we will use to create an encrypted password file. Run the following command to install httpd-tools. Now create a new file and provide the ownership to squid daemon so that it can access it.

Run the following command for same. Now you can add a new user to the password file using the htpasswd tool. In this tutorial we will be creating an example user pxuser. You can replace pxuser with anything you like. Run the following command to create a new user using htpasswd tool. By default htpasswd uses MD5 encryption for the password, hence your password will be stored in MD5 hash. As we have our password file ready, you can now edit the squid configuration file using the following command.

Write the changes to the file and exit from editor. Reload the Squid daemon using the following command. Now if you will try to use the proxy server, it will ask you for authentication. Provide your username and password and you will be able to use the proxy server.

Unauthenticated user will be shown an error page. You can easily block a single or a list of websites from the users. Using a separate file for the list of websites to be blocked is a good way to manage the blocked websites. Create a new file to store the list of websites to be blocked using your favorite editor.

Save the file and exit the editor. In this example we used some example websites, you can put a list of actual websites you wish to block. If your system is configured for traffic on another port, change it here:. It is currently configured to block all HTTP traffic, and no web traffic is allowed as shown below.

The Squid proxy server is now configured. To configure the client server switch to your client machine and open your web browser. Note: After each of the following steps, you should save and exit, then restart the Squid service to apply the new configuration. From now on when you connect to the Linux proxy server, you will see a prompt for your username and password. Any unauthenticated person will be stopped by an error message. Squid improves processing time and streamlines bandwidth use quickly through its unique caching power.

Your email address will not be published. Save my name, email, and website in this browser for the next time I comment. Toggle navigation. Related posts:. How to Copy to Clipboard in JavaScript.

How to Protect Website from Malware.