Reference’s for Beginner (Linux)

Hi, ## Basics ## 1. Introduction to Linux —http://bit.ly/Introcudtion_to_Linux 2. Linux Architecture — http://bit.ly/Linux_Architecture 3. Windows Vs Linux Comparision — http://bit.ly/Windows_Vs_Linux 4. Bash Shell features — http://bit.ly/bash_shell 5. Linux Directory Structure — http://bit.ly/Linux_Directory_structure 6. Linux Boot Process Detailed explanation – http://bit.ly/LinuXboot_process 7. Basic and Common Commands – http://bit.ly/Basicommands 8. All […]

DDOS attack measures

  How do we confirm that the server is under DDOS attack? We can confirm it by checking the result of netstat command: netstat -an|awk ‘/tcp/ {print $6}’|sort|uniq -c This will show the states and number of connections at that time. The different states that are visible mostly in servers […]

Control search engine crawlers

How to Control search engine crawlers with a robots.txt file Website owners, can instruct search engines on how they should crawl a website, by using a robots.txt file. When a search engine crawls a website, it requests the robots.txt file first and then follows the rules within. It’s important to […]

Installation/Upgradation of IPTABLES and CSF

Steps to Update/Install iptables iptables v1.6.0 cd /usr/src wget -O /usr/src/iptables-1.6.0.tar.bz2     https://www.netfilter.org/projects/iptables/files/iptables-1.6.0.tar.bz2 –no-check-certificate tar -jxf iptables-1.6.0.tar.bz2 cd iptables-1.6.0 ./configure –prefix=/myiptables –with-xtlibdir=/lib/xtables –disable-nftables make make install mv /sbin/iptables /myiptables/iptables.backup mv /sbin/iptables-restore /myiptables/iptables-restore.backup mv /sbin/iptables-save /myiptables/iptables-save.backup ln -s /myiptables/sbin/iptables /sbin/iptables ln -s /myiptables/sbin/iptables-restore /sbin/iptables-restore ln -s /myiptables/sbin/iptables-save /sbin/iptables-save ———– For […]

Horde not loading properly

Horde not loading properly While checking we could see that the horde page is not loading properly. When we check any accounts we could be able to that the horde is not properly loading. You can check this by accessing any email accounts via horde. his is a setting within […]

Horde giving fatal error (SQLSTATE[HY000]: General error: 1 no such table: horde_prefs)

I ran the command /usr/local/cpanel/bin/update_horde_config –user=diver –full and I am able to access webmail via horde ========================================================================== [23:55:18 xxx [email protected] /home/diver/mail/diver.si]cPs# /usr/local/cpanel/bin/update_horde_config –user=diver –full horde conf: /usr/local/cpanel/base/horde/config/conf.php Successfully updated the sql section of the Horde configuration. Running database checks for 1 account(s) … Using Universal Quota Support (quota=0) Running horde-db-migrate […]

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