maxmalysh

Detecting and Mitigating DDOS Attacks

#List all Finish (FIN) packets
machine1 : sudo /usr/sbin/tcpdump -Nnn -i any -s0 'tcp[13] & 1 != 0'


#List all SYN and SYN-ACK packets
machine1 : sudo /usr/sbin/tcpdump -Nnn -i any -s0 'tcp[13] & 2 != 0' 

maxmalysh

#!/usr/bin/env bash

# This script prints out all of your Redis keys and their size in a human readable format
# Copyright 2013 Brent O'Connor
# License: http://www.apache.org/licenses/LICENSE-2.0

human_size() {
        awk -v sum="$1" ' BEGIN {hum[1024^3]="Gb"; hum[1024^2]="Mb"; hum[1024]="Kb"; for (x=1024^3; x>=1024; x/=1024) { if (sum>=x) { printf "%.2f %s\n",sum/x,hum[x]; break; } } if (sum<1024) print "1kb"; } '
}