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-A PREROUTING -s 80.75.***.***/32 -i eth1 -p udp -m udp --dport 5060 -j DNAT --to-destination 192.168.100.41
-A PREROUTING -s 80.75.***.***/32 -i eth1 -p udp -m multiport --dports 10000:20000 -j DNAT --to-destination 192.168.100.41
-A POSTROUTING -s 192.168.100.0/24 -o eth1 -j SNAT --to-source 195.82.***.***
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-A PREROUTING -i vlan450 -p udp -m udp -m multiport --dports 10000:20000 -j DNAT --to-destination 172.16.200.2
-A PREROUTING -i vlan450 -p udp -m udp --dport 5061 -j DNAT --to-destination 172.16.200.2:5060
-A POSTROUTING -s 192.168.200.2 -o vlan450 -j SNAT --to-source 95.215.xxx.xxx
# или
#-A POSTROUTING -s 192.168.200.2 -o vlan450 -j MASQUERADE