Disable PING replies on Linux

You may want to disable ping replies for many reasons, may be for a security reason, or to avoid network congestion.

Disable ping reply Temporarily

# echo "1" >  /proc/sys/net/ipv4/icmp_echo_ignore_all

Also, to enable the ping reply back, set the value to “0″ as shown below.

# echo "0" >  /proc/sys/net/ipv4/icmp_echo_ignore_all

How-To: Recover root password under linux with single user mode

It happens sometime that you can't remember root password. On Linux, recovering root password can be done by booting Linux under a specific mode: single user mode.
This tutorial will show how to boot Linux in single user mode when using GRUB and finally how to change root password.

During normal usage, a Linux OS runs under runlevels between 2 and 5 which corresponds to various multi-user modes. Booting Linux under runlevel 1 will allow one to enter into a specific mode, single user mode. Under such a level, you directly get a root prompt. From there, changing root password is a piece of cake.

Resetting ELASTIX VOIP Server

Log on to your elastix voip server n use your root accaunt
type  :





sqlite3 /var/www/db/acl.db "UPDATE acl_user SET md5_password='`echo -n newpassword|md5sum|cut -d' ' -f1`' WHERE name='admin'" 

Replace newpassword with the password you want to use for the admin login.

or to reset the password to “password” you can use the following command:

sqlite3 /var/www/db/acl.db "UPDATE acl_user SET md5_password='5f4dcc3b5aa765d61d8327deb882cf99' WHERE name='admin'"

done
- FIN -

Mengatasi permasalahan import size limit pada phpmyadmin

Terkadang kita memiliki file .sql dengan ukuran yang besar dikarenakan banyaknya data yang ada saat melakukan backup database.
Pada saat melakukan importing data menggunakan PHPMYADMIN maka yang terjadi adalah kesalahan pada limitasi data