From A on B to C on D
I find iptables to be a bit of a beast… so for posterity (or my own sanity, in case I lost this, I might recover from search engine caches!) this...
Random bits
… well, literally… or pseudo literally? To generate 128 bits of pseudo-randomness: dd if=/dev/urandom bs=16 count=1 2>/dev/null| hexdump |awk '{$1=""; printf("%s", $0)}' | sed 's/ //g' Block size 16 =...