To create and unpack RAR archives in the Linux Ubuntu operating system, you must type the package installation command in the terminal:
Continue reading “RAR archives on Linux”Category Archives: Linux
Configuring ClamAV + Postfix
I will give an example of installing and configuring the free ClamAV antivirus for checking email messages for viruses.
Continue reading “Configuring ClamAV + Postfix”Configuring Spamassassin + Postfix
I’ll give an example of installing and configuring Spamassassin to filter spam.
Continue reading “Configuring Spamassassin + Postfix”Linux file system and directory structure
I will briefly describe the Linux directory structure:
Continue reading “Linux file system and directory structure”How to install Axigen
Axigen is a free mail server.
Continue reading “How to install Axigen”How to disable TLS 1.0 and TLS 1.1 in cPanel & WHM
In this article I will give an example of disabling legacy protocols in cPanel & WHM.
Continue reading “How to disable TLS 1.0 and TLS 1.1 in cPanel & WHM”Installing and configuring iRedMail
Below is an example of installing iRedMail on Ubuntu/Debian.
On the test I will install iRedMail on Ubuntu 18.04 LTS.
NAT Modules for VPN, FTP, SIP
Let’s say SNAT or masquerading is configured on a Linux server, for example, as I described in article Ubuntu IP Masquerading (NAT). But if many NAT clients connect to external PPTP, FTP, SIP servers for NAT, then they will have connection problems.
Continue reading “NAT Modules for VPN, FTP, SIP”Installing and using ipt_NETFLOW
ipt_NETFLOW – fast NetFlow traffic sensor, consists of a kernel module and iptables, supports NetFlow v5, v9, v10(IPFIX).
Continue reading “Installing and using ipt_NETFLOW”Installing and using Nfsen
Nfsen is an open-source Netflow collector and analyzer that displays statistics in a web interface in the form of graphs.
Continue reading “Installing and using Nfsen”