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Showing posts from May, 2009

Adding Swap File to Currently Installed Ubuntu OS

1. Create a file with a size you prefer. # sudo dd if=/dev/zero of=/mnt/512Mb.swap bs=1M count=512 2. Format the created file # sudo mkswap /mnt/512Mb.swap 3. Add the swap to the running system. # sudo swapon /mnt/512Mb.swap to check if the swap file has been activated use # cat /proc/meminfo or # free -t 4. To make the swap permanent every other boot. # gksudo gedit /etc/fstab Add the line at the end of the file /mnt/512Mb.swap none swap sw 0 0 5. Save and reboot the system. source: help.ubuntu
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Testing Radiator Radius via PHP Client

1. Install Apache and PHP with radius module. reference : http://freeradius.org/mod_auth_radius/ (XAMPP Package has pre-installed radius module, you can use this for alternative installation) 2. Create a PHP script for the authentication test, use the content below. <html> <head><title>RSA Test</title></head> <body bgcolor=#ffc7 text=#000000> <?php $challenge = false; $loginAccepted = false; $error = false; if (isset($_POST['uname'])) { $radius = radius_auth_open(); if (!radius_add_server($radius,'[IP ADDRESS]',[PORT],'[secret]',60,1)) { $error = radius_strerror($radius); } else if (!radius_create_request($radius,RADIUS_ACCESS_REQUEST)) { $error = radius_strerror($radius); } else { radius_put_attr($radius,RADIUS_USER_NAME,$_POST['uname']); if (isset($_POST['challenge'])) { radius_put_attr($radius,RADIUS_USER_PASSWORD,$_POST['challenge
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