August 26, 2015

Symbolic link hack and its prevention in cPanel based servers.

Linux General,

Symbolic link: Just like we use shortcut in windows based operating system. Symbolic link (symlink or soft link) is a shortcut like file in linux operating systems. In linux a normal user cannot access server main/root directory. So, they use this symlink option as a tool to hack/gain access to server main/root directory. User will…

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August 14, 2015

DNS Configuration (Internal and External)

Linux General,

The following package must be installed : bind-9.8.2-0.17.rc1.el6_4.6.i686.rpm bind-chroot-9.8.2-0.17.rc1.el6_4.6.i686.rpm bind-utils-9.8.2-0.17.rc1.el6_4.6.i686.rpm bind-libs-9.8.2-0.17.rc1.el6_4.6.i686.rpm Install  DNS:     Install bind and bind-chroot package using bellow command rpm -ivh bind-9.8.2-0.17.rc1.el6_4.6.i686.rpm rpm -ivh bind-chroot-9.8.2-0.17.rc1.el6_4.6.i686.rpm rpm -ivh bind-utils-9.8.2-0.17.rc1.el6_4.6.i686.rpm rpm -ivh bind-libs-9.8.2-0.17.rc1.el6_4.6.i686.rpm Create DNS key using below format: % dnssec-keygen -a hmac-md5 -b 128 -n USER dhcpupdate Kdhcpupdate.+157+14638 This will create a 128bit…

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