113 lines
6.2 KiB
Bash
Executable File
113 lines
6.2 KiB
Bash
Executable File
#!/bin/bash
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### BEGIN INIT INFO
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# Provides: scriptname
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# Required-Start: $network
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# Required-Stop: $network
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# Default-Start: 2 3 4 5
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# Default-Stop: 0 1 6
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# Short-Description: iptables
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# Description: Enable firewall rules
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### END INIT INFO
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exec 1> >(logger -s -t $(basename $0)) 2>&1
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case $1 in
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start)
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echo -n "firewall start..."
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### IPv4
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iptables -P INPUT ACCEPT
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iptables -F INPUT
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#unencrypted traffic
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iptables -A INPUT -p esp -j ACCEPT # ipsec
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iptables -A INPUT -p udp --dport 500 --sport 500 -j ACCEPT # ipsec
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iptables -A INPUT -p udp --dport 4500 --sport 4500 -j ACCEPT # ipsec
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iptables -A INPUT -s 170.199.217.0 -p tcp --dport 22 -j ACCEPT # ssh from bastion
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iptables -A INPUT -s 170.199.217.0 -p udp --sport 53 -j ACCEPT # dns replies from bastion
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iptables -A INPUT -s 170.199.210.99 -p tcp --sport 443 -j ACCEPT # mirrors.wit.com
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iptables -A INPUT -p icmp -j ACCEPT
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#traffic we want to see encrypted over the VPN
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iptables -A INPUT -m policy --pol ipsec --dir in -p udp --dport 4789 -j ACCEPT # vxlan traffic
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iptables -A INPUT -m policy --pol ipsec --dir in -p tcp --dport 6789 -j ACCEPT # ceph mon traffic
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iptables -A INPUT -m policy --pol ipsec --dir in -p tcp --sport 6789 -j ACCEPT # ceph mon traffic
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iptables -A INPUT -m policy --pol ipsec --dir in -m multiport -p tcp --dports 6800:7300 -j ACCEPT # ceph traffic
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iptables -A INPUT -m policy --pol ipsec --dir in -m multiport -p tcp --sports 6800:7300 -j ACCEPT # ceph traffic
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iptables -A INPUT -m policy --pol ipsec --dir in -m multiport -p tcp --dports 49152:49215 -j ACCEPT # libvirt live migration
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iptables -A INPUT -i lo -m multiport -p tcp --sports 6800:7300 -j ACCEPT # local ceph traffic
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iptables -A INPUT -i lo -m multiport -p tcp --dports 6800:7300 -j ACCEPT # local ceph traffic
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### mgmt
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iptables -A INPUT -i mgmt -p tcp --dport 22 -j ACCEPT
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iptables -A INPUT -i mgmt -m state --state ESTABLISHED,RELATED -j ACCEPT
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### DROP the rest
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iptables -P INPUT DROP
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#special tables
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iptables -t mangle -F
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iptables -t nat -F
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iptables -t raw -F
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iptables -t raw -A PREROUTING ! -i mgmt1 -j NOTRACK
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iptables -t raw -A OUTPUT ! -o mgmt -j NOTRACK
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#### IPv6
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ip6tables -P INPUT ACCEPT
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ip6tables -F INPUT
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#unencrypted traffic
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ip6tables -A INPUT -p esp -j ACCEPT # ipsec
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ip6tables -A INPUT -p udp --dport 500 --sport 500 -j ACCEPT # ipsec
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ip6tables -A INPUT -p udp --dport 4500 --sport 4500 -j ACCEPT # ipsec
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ip6tables -A INPUT -p ipv6-icmp -j ACCEPT # ping
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ip6tables -A INPUT -s 2604:bbc0:0:113::1 -p tcp --dport 22 -j ACCEPT # ssh from bastion
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ip6tables -A INPUT -s 2604:bbc0:0:113::1 -p udp --sport 53 -j ACCEPT # dns replies from bastion
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ip6tables -A INPUT -s 2001:67c:1560:8003::c7 -p udp --sport 123 -j ACCEPT # ntp
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ip6tables -A INPUT -s 2001:67c:1560:8003::c8 -p udp --sport 123 -j ACCEPT # ntp
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ip6tables -A INPUT -s fe80::/10 -p tcp --sport 179 -j ACCEPT # bgp (allow init as well as responding)
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ip6tables -A INPUT -s fe80::/10 -p tcp --dport 179 -j ACCEPT # bgp (allow init as well as responding)
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### mgmt
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ip6tables -A INPUT -i mgmt1 -s fe80::/10 -p udp --dport 546 -j ACCEPT # allow dhcp replys, unlcear why this needs the physical interface instead of the vrf
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ip6tables -A INPUT -i mgmt -p tcp --dport 22 -j ACCEPT # allow ssh from mgmt
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ip6tables -A INPUT -i mgmt -m state --state ESTABLISHED,RELATED -j ACCEPT # allow stateful connections over mgmt
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### DROP the rest
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ip6tables -P INPUT DROP
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#special tables
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ip6tables -t mangle -F
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ip6tables -t nat -F
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ip6tables -t raw -F
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ip6tables -t raw -A PREROUTING ! -i mgmt1 -j NOTRACK
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ip6tables -t raw -A OUTPUT ! -o mgmt -j NOTRACK
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;;
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stop)
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echo -n "firewall stop..."
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#### Firewall rules
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iptables -P INPUT ACCEPT
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iptables -F
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iptables -t raw -F
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iptables -t nat -F
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iptables -t mangle -F
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ip6tables -P INPUT ACCEPT
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ip6tables -F
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ip6tables -t raw -F
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ip6tables -t nat -F
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ip6tables -t mangle -F
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echo " done"
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;;
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restart)
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#$0 stop
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$0 start
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;;
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*)
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echo "use $0 [start|stop|restart]"
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;;
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esac
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