// web snapshot
$ cutycapt --url="http://tw.yahoo.com/" --out=/tmp/snapshot.png



// epub reader
$ fbreader xxxx.epub



// DNS reflection attack sample
$ dig @DNS_SERVER QUERY_HOST ANY +stats +dnssec



// NTP monlist reflection attack detect
$ cd /usr/share/nmap/scripts
# wget http://nmap.org/svn/scripts/ntp-info.nse
# wget http://nmap.org/svn/scripts/ntp-monlist.nse
# nmap --script-updatedb
# nmap -sU -pU:123 -Pn -n --script=ntp-info time.stdtime.gov.tw
# nmap -sU -pU:123 -Pn -n --script=ntp-monlist time.stdtime.gov.tw

# python
from scapy.all import *
hexdump(NTP(version=2, mode=7, stratum=0, poll=3, precision=42))