network_iptables
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IP tables
Configuration
Set up the rules in /etc/iptables.up.rules
Flush the iptable
iptables -F
Restore the iptable
iptables-restore < /etc/iptables.up.rules\\
Evaluate the iptable
iptables -L
Examples
Creat a chain
iptables -N SSHSECURE iptables -A SSHSECURE -j LOG --log-prefix "SSH intrusion attempt" --log-level 7 iptables -A SSHSECURE -j DROP
Use a chain
iptables -A INPUT -i eth0 -p tcp -m state --dport 22 --state NEW -m recent --set iptables -A INPUT -i eth0 -p tcp -m state --dport 22 --state NEW -m recent --update --seconds 240 --hitcount 10 -j SSHSECURE
Witout the chain for ssh
iptables -A INPUT -i eth0 -p tcp -m state --dport 22 --state NEW -m recent --set --name ssh -j ACCEPT iptables -A INPUT -i eth0 -p tcp -m state --dport 22 --state NEW -m recent --update --seconds 120 --hitcount 7 --rttl --name ssh -j DROP
Useful links
iptables example
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network_iptables.txt · Last modified: 11-07-2020 21:02 by wim