Category: Linux

How to configure HTTP Digest Authentication in Squid

Basic authentication is bad because the password is actually transmitted in plain text (encoded in Base64). See the article “How to hack HTTP Basic and Digest Authentication” for details.

Therefore, it is preferable to use Digest authentication on the Squid proxy server.

Let's (more…)

An unplugged disk causes a delay in system boot

The fstab file contains descriptive information about the file systems that the system can mount. In the /etc/fstab file, you can specify the parameters for mounting a disk, which can be either plugged to the system or unplugged from it. An example of such a disk is an external USB drive. In the latter (more…)

How to check if your computer supports TPM 2.0 on Linux

One of the requirements for Windows 11 is the TPM 2.0 chip. I think it was thanks to Windows 11 that many users learned about the existence of the TPM.

This article will tell you how to find out in Linux if there is a TPM and what version is it.

TPM: Trusted Platform Module 2.0 – (more…)

Linux Mint 20.2 Released: What’s New & Download Links

How to simulate package installation on Linux (How to create and install a dummy package)

Sometimes, when installing packages from source code, you may encounter the problem that the required dependency is missing from the system. Usually you need to solve this problem by installing the necessary dependencies from the standard repository, or by compiling them from source.

Sometimes (more…)

Configuring Squid Proxy with Multiple IP Addresses

Suppose the server has several IP addresses – on the same interface or on different ones – it doesn't matter.

Objective: make Squid use different external IP addresses depending on which port of the proxy server is being accessed.

So, as you can see, my test server (more…)

How to configure Squid to use IPv4

Because the IPv6 Internet is as fast or faster than the IPv4 Internet for most networks, Squid prefers to connect to websites over IPv6.

The “dns_v4_first on” option changes the order of preference so that Squid will first bind to dual-stack websites over IPv4. Squid will still (more…)

How Squid ACL works

Squid ACL Basics

Let's now dwell on how exactly ACLs work.

The Squid web proxy access control scheme consists of two different components:

  • ACL entries are directive strings that begin with the word “acl” and represent the types of tests that are performed (more…)

Error “Authentication helper program /usr/lib64/squid/basic_ncsa_auth: (2) No such file or directory” (SOLVED)

Squid is a popular web proxy server. It has rich functionality and, in addition to changing the IP address, it is often used as a caching proxy for websites, as a result of which the load on the web server is significantly reduced.

When used as a proxy server to change IP or bypass restrictions, (more…)

How to find out when Linux was installed

This article will look at several ways to find out the date of installation of the Linux operating system. But let's start by thinking about what is considered the date of installation of the OS?

What is considered the date of installation of Linux

It would seem that the question (more…)

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