A New Type of Phishing Attack


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What we don’t expect is that a page we’ve been looking at will change behind our backs, when we aren’t looking. That’ll catch us by

dhcpdump: Monitor DHCP Traffic For Debugging Purpose


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How do I dump DHCP packets under Linux / UNIX for monitoring or debugging purpose

Forcing fsck run on next boot


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If you want to force fsck filesystem check on next boot, you can do this with creating an empty file with the name of “forcefsck”

Clearing caches from memory


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From version 2.6.16 Linux kernel has a tunable parameter named /proc/sys/vm/drop_caches

vsftpd /bin/false check_shell=NO pam hack


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With default configuration of vsftp (vsftpd.conf under /etc) users with no shell or /bin/false shell are not able to login vsftpd ftp server. This is

Nginx: Too Many Open Files Error


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Помилка, яку можна побачити в лог-файлах nginx

Перевірка С-програм під Linux на витоки пам’яті


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Перевірка програм написаних на С під Linux на витоки пам’яті та профілювання

Запуск декількох X сесій


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Як запускати кілька X сесій під Linux або UNIX та як між ними переключатись