Add old ufw configuration and current IPTABLES configuration

caskd 4 years ago
commit e3a6d410e6
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# INPUT Chain (incoming ports)
# All packet verification
iptables -I INPUT -m conntrack --ctstate INVALID -j DROP # Drop invalid packets
iptables -I INPUT -p icmp --icmp-type 8 -m conntrack --ctstate NEW -j ACCEPT # No constant icmp packets
iptables -I INPUT -p tcp --tcp-flags ALL NONE -j DROP # Block null packets
iptables -I INPUT -p tcp ! --syn -m state --state NEW -j DROP # Block syn floods
# SSH Bruteforce Mitigations
iptables -N IN_SSH
iptables -A INPUT -i eth0 -p tcp --dport 22 -m conntrack --ctstate NEW -j IN_SSH
iptables -A IN_SSH -m recent --name sshbf --rttl --rcheck --hitcount 3 --seconds 10 -j DROP
iptables -A IN_SSH -m recent --name sshbf --rttl --rcheck --hitcount 4 --seconds 1800 -j DROP
iptables -A IN_SSH -m recent --name sshbf --set -j ACCEPT
# Cross-server free networking
iptables -A INPUT -s,,,, -j ACCEPT
iptables -A INPUT -i eth1 -j ACCEPT
# Services
iptables -A INPUT -p tcp -m multiport --dports 22,80,443,2200,2422,2442,25565,51413,51820 -j ACCEPT
iptables -A INPUT -p udp -m multiport --dports 443,2200,25565,51820 -j ACCEPT
# Docker Rules (not required with rules above)
#iptables -A INPUT -p tcp --dport 7946 -j ACCEPT
#iptables -A INPUT -p udp --dport 7946 -j ACCEPT
#iptables -A INPUT -p tcp --dport 2377 -j ACCEPT
#iptables -A INPUT -p udp --dport 4789 -j ACCEPT
#iptables -A INPUT -p ESP -j ACCEPT # IPSEC for Docker
# Special Rules
iptables -I INPUT -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT # Keep existing connections open
iptables -I INPUT 1 -i lo -j ACCEPT # Loopback connections
# DEFAULT RULES # Apply at end, first set whitelisted connections
iptables -P INPUT DROP
# iptables -P FORWARD DROP # Unsure about this, needs testing
iptables -P OUTPUT ACCEPT # Allow all outbound connections

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# Incoming services
ufw allow proto tcp from any to any port 22,80,443,2200,2422,2442,25565,51413
for ((i = 0; i<${#IPS[@]}; i++));do
ufw allow from ${IPS[${i}]}
ufw default deny incoming
ufw default reject routed
ufw default allow outgoing