mirror of git://git.acid.vegas/tools.git
71 lines
2.0 KiB
Bash
71 lines
2.0 KiB
Bash
#!/bin/sh
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# IRCd Firewall - Developed by acidvegas (https://git.acid.vegas/supertools)
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# nano /etc/default/grub
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# Add ipv6.disable=1 to GRUB_CMDLINE_LINUX_DEFAULT then run update-grub
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# Configuration
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IP_MAIN="10.0.0.1" # Change this to your IP
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IP_HUB="10.0.0.2" # Change this to your hub IP
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PORT_SSH=22 # Default 22
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PORT_HUB=5900 # Default 5900
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# Kernel hardening settings
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mkdir -p /etc/sysctl.d
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{
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printf "net.ipv4.conf.all.accept_source_route = 0\n"
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printf "net.ipv6.conf.all.accept_source_route = 0\n"
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printf "net.ipv4.conf.all.rp_filter = 1\n"
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printf "net.ipv4.conf.default.rp_filter = 1\n"
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printf "net.ipv4.conf.all.accept_redirects = 0\n"
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printf "net.ipv6.conf.all.accept_redirects = 0\n"
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printf "net.ipv4.conf.default.accept_redirects = 0\n"
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printf "net.ipv6.conf.default.accept_redirects = 0\n"
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printf "net.ipv4.conf.all.log_martians = 1\n"
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printf "kernel.randomize_va_space = 2\n"
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printf "fs.suid_dumpable = 0\n"
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} > /etc/sysctl.d/99-custom-hardening.conf
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# Apply hardening settings
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sysctl -p /etc/sysctl.d/99-custom-hardening.conf
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# Flush existing rules
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iptables -F
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iptables -X
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iptables -t nat -F
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iptables -t nat -X
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iptables -t mangle -F
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iptables -t mangle -X
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# Default chain policies
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iptables -P INPUT DROP
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iptables -P FORWARD DROP
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iptables -P OUTPUT ACCEPT
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# Common Firewall rules
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iptables -A INPUT -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
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iptables -A INPUT -p icmp --icmp-type echo-request -j DROP
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iptables -A INPUT -i lo -j ACCEPT
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# Allow SSH
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iptables -A INPUT -p tcp -s $IP_MAIN --dport $PORT_SSH -j ACCEPT
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# Allow IRCd Hub
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iptables -A INPUT -p tcp -s $IP_HUB --dport $PORT_HUB -j ACCEPT
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# Allow IRCd Ports
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iptables -A INPUT -p tcp --dport 6660:6669 -j ACCEPT
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iptables -A INPUT -p tcp --dport 7000 -j ACCEPT
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# Allow IRCd TLS Ports
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iptables -A INPUT -p tcp --dport 6697 -j ACCEPT
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iptables -A INPUT -p tcp --dport 9999 -j ACCEPT
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# Save rules
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apt-get install -y iptables-persistent
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netfilter-persistent save
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systemctl enable netfilter-persistent && systemctl start netfilter-persistent
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# Show rules
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iptables -L -v -n
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