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netstat -an | grep :80 | awk '{ print $5 }' | cut -d: -f1 | sort | uniq -c | sort -n

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sudo yum install epel-release
sudo yum install fail2ban

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sudo cp /etc/fail2ban/jail.conf /etc/fail2ban/jail.local
sudo nano /etc/fail2ban/jail.local

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[DEFAULT]
bantime = 3600
findtime = 600
maxretry = 3

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sudo touch /etc/fail2ban/ip_blacklist.conf

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sudo nano /etc/fail2ban/ip_blacklist.conf

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192.168.0.100
123.456.789.0

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sudo nano /etc/fail2ban/jail.local

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[DEFAULT]
# Ê¡ÂÔÆäËûÉèÖÃ

# ½«ÕâÒ»ÐÐÐÞ¸ÄΪÏÂÃæÕâÐÐ
bantime = 3600

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[ip-blacklist]
enabled  = true
filter   = apache-noscript
logpath  = /var/log/httpd/access.log
banaction = iptables-multiport
bantime  = 3600
maxretry = 1
findtime = 600
action   = iptables[name=IPBlacklist, port=80, protocol=tcp]

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sudo service fail2ban restart

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sudo iptables -L -n

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