Hairpin NAT
Hairpin network address translation (NAT Loopback) is where the device on the LAN can access another machine on the LAN via the public IP address of the gateway router.
Firsst Nas
/ip firewall nat add action=masquerade chain=srcnat dst-address=192.168.0.105 out-interface=ether2-LAN protocol=tcp src-address=192.168.0.0/24
Second Nas
/ip firewall nat
add action=masquerade chain=srcnat dst-address=192.168.0.104 out-interface=ether2-LAN protocol=tcp src-address=192.168.0.0/24
Endpoint-Independent NAT
Endpoint-independent NAT creates mapping in the source NAT and uses the same mapping for all subsequent packets with the same source IP and port. This mapping is created with the following rule:
/ip firewall nat
add action=endpoint-independent-nat chain=srcnat out-interface=ether1-WAN protocol=udp
/ip firewall nat
add action=endpoint-independent-nat chain=dstnat in-interface=ether1-WAN protocol=udp
