SSH (Secure Shell) is a protocol for creating a secure connection between two computers. The secure SSH connection provides authentication and encryption. On the server, it is possible to configure a SSH logon banner (or welcome banner) with the use…
Before to start, I would describe what is DDOS attack On the Internet, a distributed denial-of-service (DDoS) attack is one in which a multitude of compromised systems attack a single target, thereby causing denial of service for users of the targeted…
Software repository does not add when we install Debian Linux from CD/DVD without Internet connection. You can’t update the Debian Linux is without software repository, but you can add it later. Find a repository near your area. Download from remote…
Built OpenLDAP server live and running. You need to tune the performance of your OpenLDAP server. Every installation might be handling different kind of load and must be facing different kind of performance issues. Here I will try to explain…
We often come across a condition in which the boot loader gets corrupt. Here are a few steps that will help you recover your GRUB 2 boot loader. Boot from a live CD or DVD, which supports GRUB 2 ([highlight1]Ubuntu…
Dear Blog Reader, Someone asked which tools is a better tool to use. I think its better to start with the roots. We should first understand the internal working to these 3 network utilities u asked in question. So lets…
Una delle attività più importanti della mia vita professionale è quello di formare le persone su come utilizzare la piattaforma Asterisk, e per i corsi che spesso ricevo domande come: qual è la differenza tra Asterisk e Elastix? I sistemi…
Il comando dd è usato in ambiente linux/Unix per creare copie bit a bit fra device. Vediamone un esempio di seguito: sudo dd if=/dev/Sr0 of=/home/seawolf/backup.iso bs=2048 conv=sync L’opzione conv=sync indica a dd di sincronizzare l’input e l’output assicurando una protezione…
Ogni tanto, può risultare utile, scaricare un intero sito web sul proprio computer, per renderne disponibile la consultazione offline. Scaricare un sito web è veramente semplice se si possiede un sistema linux like, infatti tutti i sistemi linux sono dotati…
## Configure eth0 # # vi /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=”eth0″ NM_CONTROLLED=”yes” ONBOOT=yes HWADDR=A4:BA:DB:37:F1:04 TYPE=Ethernet BOOTPROTO=static NAME=”System eth0″ UUID=5fb06bd0-0bb0-7ffb-45f1-d6edd65f3e03 IPADDR=192.168.1.44 NETMASK=255.255.255.0 ## Configure Default Gateway # # vi /etc/sysconfig/network NETWORKING=yes HOSTNAME=centos6 GATEWAY=192.168.1.1 ## Restart Network Interface # /etc/init.d/network restart ## Configure DNS Server…