To configure firewall as a system admin or even as a normal computer user we need to know the port numbers which will remain open. Here is a list of common port numbers of some common services.

The issue arises because we may not need the same permission for the files as like the directories. Take a website as example. Generally website files have 644 permission and directories have 755 permission.

Okay here is the promise, I will post all new and fresh content regularly and keep the blog live. At least I can post my Facebook status here. ;)

বাংলাদেশী প্রাপ্তবয়স্কদের বেশিরভাগেরই জাতীয় পরিচয় পত্র আছে। অনেকে এটাকে ভোটার আইডি বলেন ভুল। এটা বাংলাদেশের National ID Card বা জাতীয় পরিচয় পত্র।

Here you can change your permalinks as you like and make it SEO friendly. You will find here 4 predefined permalink structure. You can set them. There's also a box called Custom, You can define your own permalink structure here.