Recently Vultr has rolled out IPv6 connectivity in some locations and each virtual machine is provided with its own /64. However, the /64 is not fully routed.
Continue reading ndppd on Vultr to enable fully routed /64 for IPv6
This is a fix on server side while solution for client side provided by M$ does not always work out.
Continue reading Solution to Windows cannot get IP from dnsmasq as DHCP server
Some systems do not ship with swap partition. A swap file is used instead. Continue reading Enable swap from a file
ICMP Redirect is a mechanism for routers to convey routing information to hosts. The message informs a host to update its routing information (to send packets on an alternative route).
Continue reading Drop ICMP redirects to avoid network issues in some cases
Sometimes a file needs to be determined random enough or not. ENT is a program available in repo to calculate the entropy and randomness. Continue reading Calculate the entropy of a file using ENT
Disclaimer – useful only for machines that boot external kernel that can not be accessed or modified and /sbin/init as the FIRST executed process if it fails may run into kernel panic where machines will NEVER boot again so it is of NO guarantee and do NOT count on this thus try at your own risk. Continue reading Hook /sbin/init and use kexec to boot custom kernel
Do not rely on this to make keys or passwords since there is no guarantee
Continue reading Generate some random data