iptables -t nat -F
kroot@swantest:/home/build/libreswan/testing/pluto/ikev2-51-rw-nat-ikeport\[root@nic ikev2-51-rw-nat-ikeport]# iptables -F
kroot@swantest:/home/build/libreswan/testing/pluto/ikev2-51-rw-nat-ikeport\[root@nic ikev2-51-rw-nat-ikeport]# # NAT
kroot@swantest:/home/build/libreswan/testing/pluto/ikev2-51-rw-nat-ikeport\[root@nic ikev2-51-rw-nat-ikeport]# iptables -t nat -A POSTROUTING -s 192.1.3.0/24 -p udp --sport 4500 -j SNAT --to-source 192.1.2.254:3500-3700
kroot@swantest:/home/build/libreswan/testing/pluto/ikev2-51-rw-nat-ikeport\[root@nic ikev2-51-rw-nat-ikeport]# iptables -t nat -A POSTROUTING -s 192.1.3.0/24 -p udp --sport 500 -j SNAT --to-source 192.1.2.254:2500-2700
kroot@swantest:/home/build/libreswan/testing/pluto/ikev2-51-rw-nat-ikeport\[root@nic ikev2-51-rw-nat-ikeport]# iptables -t nat -A POSTROUTING --source 192.1.3.0/24 --destination 0.0.0.0/0 -j SNAT --to-source 192.1.2.254
kroot@swantest:/home/build/libreswan/testing/pluto/ikev2-51-rw-nat-ikeport\[root@nic ikev2-51-rw-nat-ikeport]# # make sure that we never acidentially let ESP through.
kroot@swantest:/home/build/libreswan/testing/pluto/ikev2-51-rw-nat-ikeport\[root@nic ikev2-51-rw-nat-ikeport]# iptables -N LOGDROP
kroot@swantest:/home/build/libreswan/testing/pluto/ikev2-51-rw-nat-ikeport\[root@nic ikev2-51-rw-nat-ikeport]# iptables -A LOGDROP -j LOG
kroot@swantest:/home/build/libreswan/testing/pluto/ikev2-51-rw-nat-ikeport\[root@nic ikev2-51-rw-nat-ikeport]# iptables -A LOGDROP -j DROP
kroot@swantest:/home/build/libreswan/testing/pluto/ikev2-51-rw-nat-ikeport\[root@nic ikev2-51-rw-nat-ikeport]# #
kroot@swantest:/home/build/libreswan/testing/pluto/ikev2-51-rw-nat-ikeport\[root@nic ikev2-51-rw-nat-ikeport]# iptables -I FORWARD 1 --proto 50 -j LOGDROP
kroot@swantest:/home/build/libreswan/testing/pluto/ikev2-51-rw-nat-ikeport\[root@nic ikev2-51-rw-nat-ikeport]# iptables -I FORWARD 2 --destination 192.0.2.0/24 -j LOGDROP
kroot@swantest:/home/build/libreswan/testing/pluto/ikev2-51-rw-nat-ikeport\[root@nic ikev2-51-rw-nat-ikeport]# iptables -I FORWARD 3 --source 192.0.2.0/24 -j LOGDROP
kroot@swantest:/home/build/libreswan/testing/pluto/ikev2-51-rw-nat-ikeport\[root@nic ikev2-51-rw-nat-ikeport]# # route
kroot@swantest:/home/build/libreswan/testing/pluto/ikev2-51-rw-nat-ikeport\[root@nic ikev2-51-rw-nat-ikeport]# iptables -I INPUT 1 --destination 192.0.2.0/24 -j LOGDROP
kroot@swantest:/home/build/libreswan/testing/pluto/ikev2-51-rw-nat-ikeport\[root@nic ikev2-51-rw-nat-ikeport]# # Display the table, so we know it is correct.
kroot@swantest:/home/build/libreswan/testing/pluto/ikev2-51-rw-nat-ikeport\[root@nic ikev2-51-rw-nat-ikeport]# iptables -t nat -L -n
Chain PREROUTING (policy ACCEPT)
target     prot opt source               destination         

Chain INPUT (policy ACCEPT)
target     prot opt source               destination         

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination         

Chain POSTROUTING (policy ACCEPT)
target     prot opt source               destination         
SNAT       udp  --  192.1.3.0/24         0.0.0.0/0            udp spt:4500 to:192.1.2.254:3500-3700
SNAT       udp  --  192.1.3.0/24         0.0.0.0/0            udp spt:500 to:192.1.2.254:2500-2700
SNAT       all  --  192.1.3.0/24         0.0.0.0/0            to:192.1.2.254
kroot@swantest:/home/build/libreswan/testing/pluto/ikev2-51-rw-nat-ikeport\[root@nic ikev2-51-rw-nat-ikeport]# iptables -L -n
Chain INPUT (policy ACCEPT)
target     prot opt source               destination         
LOGDROP    all  --  0.0.0.0/0            192.0.2.0/24        

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination         
LOGDROP    esp  --  0.0.0.0/0            0.0.0.0/0           
LOGDROP    all  --  0.0.0.0/0            192.0.2.0/24        
LOGDROP    all  --  192.0.2.0/24         0.0.0.0/0           

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination         

Chain LOGDROP (4 references)
target     prot opt source               destination         
LOG        all  --  0.0.0.0/0            0.0.0.0/0            LOG flags 0 level 4
DROP       all  --  0.0.0.0/0            0.0.0.0/0           
kroot@swantest:/home/build/libreswan/testing/pluto/ikev2-51-rw-nat-ikeport\[root@nic ikev2-51-rw-nat-ikeport]# echo "initdone"
initdone
kroot@swantest:/home/build/libreswan/testing/pluto/ikev2-51-rw-nat-ikeport\[root@nic ikev2-51-rw-nat-ikeport]# : ==== end ====
kroot@swantest:/home/build/libreswan/testing/pluto/ikev2-51-rw-nat-ikeport\[root@nic ikev2-51-rw-nat-ikeport]#