Activities

August 2017
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How to pull single table data from full database backup file.

At some time, you would ask to restore a particular table from a full backup. So you have to follow the below steps. 1. Request backup team to provide the backup 2. Decompress the backup. 3. Move the file to target server. 4. Restore entire backup which take long time based of the volume. 5. […]

Useful commands to find the hacker programs and OS behavior

Recently I got an opportunity to work with certain hacked servers which is compromised due to poor administration. As we know Heartbleed. shellshock and poodle attack are come out recently.

1. Heartbleed vulnerability — due to buggy Openssl relase – resolved by updating the package to latest 2. Shellshock : a buggy and hidden […]

IPtables : Blocking bots/spam attack based on the Log file output

Recently I had a client who wants to move more than 300 domains hosted servers to AWS server. His application uses a product which can serve multiple domains based on the request. After a successful migration, Im noticed that web server is hitting badly and causing server load to become high most of the time. […]

Bash : Find the MX records details of a domain name from a file list

Prior to setup a Namse server setup using powerDNS. I want to know whether the domain names are using any external smtp servers or Not. It’s because, If they are using external smtp, I need to contact those customer as well as create the DNS, MX records ass well.

Source

I have given a […]

Finding external hosted domains those are not using my nameservers

One of my client has given a list of 364 domains those he managed for customer accounts. He does not know what all those are active and hosted on the aged Whm/Cpanel server he is using currently. It is very hard for me to found the domain name which are using his current name server […]

IPTables : How do I block access from a country

Recently one of the server was attempted to hack from various countries especially from Ukranine, France and China even though all our customers are located in US. So we do not need to open the web access to any of these countries as they are not belonging to our customer region.

After a few Google […]