How to get a list of open ports in Linux?
So you have set up a very secured server but still don't you want to cross check if the machine is really secured and your server has not been compromised
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Access denied for user 'root'@'localhost' (using password: NO)
This error pops us mostly while trying to access your MYSQL database #### #### **Resolution:** ``` [root@server ~]# /etc/init.d/mysqld stop Stopping MySQL: [ OK ] [root@server ~]# mysqld_safe --skip-grant-tables &
Hanging up active calls in Asterisk PBX
There are many times when we run out of free channels in your PBX while making calls or in case a phone is not placed properly the calls does not
How to change default snapshot location in VMware ESXi 5
[](http://3.bp.blogspot.com/-WT8dyJbSGi8/UleHyrmoHmI/AAAAAAAACc4/x3_dKcmgWOs/s1600/images.jpg)Be default the snapshots which are taken for any vm are stored with their parent in the same directory or storage. Sometimes you may run out of space and you
Changing password for Administrator in Samba4
Now when you have a successful running Samba4 domain server, you might come across a time when you will have to change the Administrator password. Let me show you the
Setting up custom TCP/IP Keep Alive Parameter in Linux
## Why do we use Keep Alive parameter ? I guess the name itself explains the 90% of the definition and the rest let me try to explain you. Now
Understanding Special Permission SGID in Linux
In my earlier posts I had explained about other Special Permission used in Linux i.e. [SUID]({{< relref "understanding-special-permission-suid/index.md" >}}) and [STICKY BIT]({{< relref "understanding-special-permission-sticky/index.md" >}}) So let me help you understand SGID and its usage with
Understanding Special Permission SUID in Linux
There are various blogs and websites available explaining about SUID and SGID now I won't say I will tell you something extra instead just adding one more to the list
Understanding Special Permission Sticky Bit in Linux
Now there are few permissions which are used in Linux and are referred as special permission due to [SUID]({{< relref "understanding-special-permission-suid/index.md" >}}) and [SGID]({{< relref "understanding-special-permission-sgid/index.md" >}}) in their respective link their different functionality in terms
Connecting two IP PBX box using SIP Trunk
## Lab Environment Suppose you have two IP PBX box one at INDIA and other at US and you want to integrate all the SIP extensions created on both the