How To Install EPEL Repo on a CentOS and RHEL 7.x
How To Install EPEL Repo on a CentOS and RHEL 7.x The following command will install EPEL Repo on a CentOS and RHEL 7.x: $ sudo yum install epel-release Install EPEL on CentOS 8.x
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VNC error – only supporting 8,15, 16 and 25 bpp..
VNC error – only supporting 8,15, 16 and 25 bpp rdp connections During Remote Desktop Connection (RDP) from Windows to Linux you can face with VNC error “only supporting 8,15, 16 and 25 bpp rdp connections” It’s very easy to… Continue Reading
How to Remote Desktop from Windows to Linux
How to Remote Desktop from Windows to Linux You can connect to Linux machine from Windows using standard Windows Remote Desktop Connection (RDP). First we need xrdp package on Linux server. xrdp provides a graphical login to remote machines using… Continue Reading
How to capture DHCP requests with tcpdump
In this article i will show how to install tcpdump on Linux (Ubuntu, Redhat) and Capture DHCP requests using tcpdump utility in Linux. DHCP requests can be captured with tcpdump. So first we need install tcpdump utility in our Linux… Continue Reading
How to capture broadcast or multicast packets with tcpdump utility
How to capture broadcast or multicast packets with tcpdump utility First install tcpdump software: For Ubuntu: # apt-get install tcpdump ForCentOS: # yum install tcpdump Then you can run tcpdump # tcpdump -n “broadcast and multicast” Example output: Discuss article… Continue Reading
How to Create Virtual Interface on CentOS 6 Linux
How to Create Virtual Interface on CentOS 6 Linux Creating Virtual Interface and Assign Multiple IP Addresses Let’s assume you want create new virtual interface ifcfg-eth0:0 device and assign new IP 10.10.10.20 Network device files are located in /etc/sysconfig/network-scripts/ directory.… Continue Reading
How to Remove CentOS Old Kernels
How to Remove CentOS old kernels or CentOS freeing up disk space 1. Check currently list of installed Linux kernels with RPM command #rpm -q kernel kernel-2.6.32-573.12.1.el6.i686 kernel-2.6.32-573.18.1.el6.i686 kernel-2.6.32-573.22.1.el6.i686 kernel-2.6.32-573.26.1.el6.i686 kernel-2.6.32-642.1.1.el6.i686 2. Install Install YUM Utilities Package #yum install… Continue Reading
How to Install vsftpd Server on CentOS / RHEL
How to Install vsftpd Server on CentOS / RHEL What is vsftpd? vsftpd (very secure FTP daemon) is an FTP server for Unix-like systems. vsftpd is the default FTP server in the Ubuntu, CentOS, Fedora, RHEL Linux distributions. Step… Continue Reading
Install nslookup on CentOS
Install nslookup on CentOS For install nslookup, dig, host you need bind-utils pakage. Just run the command: sudo yum install bind-utils
Install Rkhunter (Rootkit Hunter) in RHEL, CentOS
Install Rkhunter (Rootkit Hunter) in RHEL, CentOS Rkhunter is rootkit scanner for Linux systems. This tool scans for rootkits, backdoors and local exploits by running tests like: – MD5 hash compare – Look for default files used by rootkits –… Continue Reading