如何为 Kamailio SIP 服务器配置 UFW Ubuntu 服务器？

我需要配置 UFW 或 iptables 来保护我的 ubuntu 服务器上的 Kamailio。我遵循了这个kamailio-security但我不知道如何配置它。

*filter
:INPUT DROP [0:0]
:FORWARD DROP [0:0]
:OUTPUT DROP [0:0]
:CHECK_TCP - [0:0]
:ICMP - [0:0]
:PRIVATE - [0:0]
:PSD - [0:0]
:SERVICES - [0:0]
-A INPUT -i lo -j ACCEPT 
-A INPUT -i eth0 -p ipv6 -j ACCEPT 
-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT 
-A INPUT -j SERVICES 
-A OUTPUT -o lo -j ACCEPT 
-A OUTPUT -m state --state NEW,RELATED,ESTABLISHED -j ACCEPT 
-A CHECK_TCP -p tcp -m tcp ! --tcp-flags SYN,RST,ACK SYN -m state --state NEW -j DROP 
-A CHECK_TCP -p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,SYN,RST,ACK -j DROP 
-A CHECK_TCP -p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG -j DROP 
-A CHECK_TCP -p tcp -m tcp --tcp-flags FIN,ACK FIN -m state --state INVALID,NEW,RELATED -j DROP 
-A CHECK_TCP -p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,SYN -j DROP 
-A CHECK_TCP -p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -j DROP 
-A CHECK_TCP -p tcp -m tcp --tcp-flags SYN,RST SYN,RST -j DROP 
-A CHECK_TCP -p tcp -m tcp --tcp-flags FIN,RST FIN,RST -j DROP 
-A CHECK_TCP -p tcp -m tcp --tcp-flags PSH,ACK PSH -j DROP 
-A CHECK_TCP -p tcp -m tcp --tcp-flags ACK,URG URG -j DROP 
-A CHECK_TCP -p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -j DROP 
-A CHECK_TCP -p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,SYN,RST,PSH,ACK,URG -j DROP 
-A CHECK_TCP -p tcp -m tcp --tcp-option 64 -j DROP 
-A CHECK_TCP -p tcp -m tcp --tcp-option 128 -j DROP 
-A ICMP -p icmp -m icmp --icmp-type 11/1 -m limit --limit 5/sec -m state --state NEW -j ACCEPT 
-A ICMP -p icmp -m icmp --icmp-type 11/0 -m limit --limit 5/sec -m state --state NEW -j ACCEPT 
-A ICMP -p icmp -m icmp --icmp-type 3 -m limit --limit 10/sec -m state --state NEW -j ACCEPT 
-A ICMP -p icmp -m icmp --icmp-type 8 -m limit --limit 10/sec --limit-burst 10 -m state --state NEW -j ACCEPT 
-A ICMP -p icmp -j DROP 
-A PRIVATE -d 192.168.0.0/16 -j DROP 
-A PRIVATE -d 172.16.0.0/12 -j DROP 
-A PRIVATE -d 10.0.0.0/8 -j DROP 
-A PRIVATE -j RETURN 
-A PSD -p tcp -m statistic --mode random --probability 0.050000 -j REJECT --reject-with icmp-port-unreachable 
-A PSD -p tcp -m statistic --mode random --probability 0.050000 -j TARPIT  --reset 
-A PSD -p tcp -m statistic --mode random --probability 0.500000 -j TARPIT  --tarpit 
-A PSD -p udp -m statistic --mode random --probability 0.050000 -j REJECT --reject-with icmp-port-unreachable 
-A PSD -m statistic --mode random --probability 0.050000 -j REJECT --reject-with icmp-host-unreachable  
-A SERVICES -p icmp -m state --state INVALID -j DROP 
-A SERVICES -p icmp -j ICMP 
-A SERVICES -p tcp -j CHECK_TCP 
-A SERVICES -p udp -m udp --dport 123 -m state --state NEW -j ACCEPT 
-A SERVICES -p udp -m udp --dport 53 -m state --state NEW -j ACCEPT 
-A SERVICES -p tcp -m tcp --dport 53 -m state --state NEW -j ACCEPT 
-A SERVICES -p tcp -m udp -m multiport --dports 5060 -m state --state NEW -j ACCEPT 
-A SERVICES -p tcp -m udp -m multiport --dports 5061 -m state --state NEW -j ACCEPT 
-A SERVICES -i eth0 -j PSD 
COMMIT