Archive for the ‘System Administration’ Category

To work around this issue, add the EnableAggressiveMemoryUsage registry entry to the following registry subkey: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\HTTP\Parameters Then, set the EnableAggressiveMemoryUsage registry entry to 1. To do this, follow these steps: Click Start, click Run, type regedit in the Open box, and then click OK. Click the following registry subkey: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\HTTP\Parameters On the Edit menu, point […]

Customizing the MOTD – Linux, BSD

Posted: 20th February 2016 by Babar Shafiq in System Administration

  If you want your custom logo, or custom info to also be shown whenever any user logs into the machine you can do so with For CentOS :- yum install figlet For Debian :- $ sudo apt-get update $ sudo apt-get install toilet figlet For BSD:- cd /usr/ports/misc/figlet && make install distclean figlet We-Rock […]

Fingerprinting / Identify Remote Web Server

Posted: 18th January 2016 by Babar Shafiq in System Administration, Tips

telnet – Identify remote web server Use telnet to connect to remove web server, enter $ telnet www.vivekgite.com www Output: Trying 74.86.49.130… Connected to www.vivekgite.com. Escape character is ‘^]’. Request header, enter the following command and hit [ENTER] key twice: HEAD / HTTP/1.0 Output: HTTP/1.0 200 OK Connection: close X-Pingback: http://www.cyberciti.biz/tips/xmlrpc.php Content-Type: text/html; charset=UTF-8 Content-Length: […]

I was trying to build a webserver for just displaying a simple message but I don’t want to use Apache/IIS/nginx etc. So I tried nodejs and literally it is so easy to write a webserver in just 15 lines of code. Webserver: which can show static index.html page which can log remote client IPs which […]

Have you ever encountered out of disk space issues on your wonderful VMs when trying install a critical application? Here are a few easy steps that help you to solve the disk space problems on your VMware workstation VMs

Today when I opened my self-signed secure website, it gave me following error: The key does not support the requested operation. (Error code: sec_error_invalid_key) But in the past it was like: What I did wrong? Oh yes, Firefox upgraded to 33.0 (now 33.1), something broken in 33+ and was working fine with Firefox 32.0?