Linux and Unix cheatsheet
Hardening the TCP/IP stack to SYN attacks
How to detect a SYN attack It is very simple to detect SYN attacks. The netstat command shows us how many connections are currently in the h...
Linux Netfilter tweaks for High traffic servers
If you are serving a high traffic web/DNS server, and recently having PING loss to the server and not all HTTP request were successful to i...
Remove weak ciphers from SSH Server
Use nmap to check current loaded ciphers. Download the file http://nmap.org/svn/scripts/ssh2-enum-algos.nse local nmap = requ...
output texts in columns
If you have a list of data that needs to be printed out in a proper align column format. you can use the "column" command to sort them out.
refer as below:
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