Log Nat translations

Here we are required to maintain the logs of the following parameters

1: Internal IP Address and port
2: NAT translated IP Address and port
3. Destination IP Address and port

How do i get these logs in routeros, perferably using syslog

You could try this (or some netflow alternative).

/system logging action
add name=syslog remote=1.2.3.4 target=remote

/system logging
add action=syslog topics=firewall
add action=syslog topics=dhcp

/ip firewall nat
add action=log chain=srcnat
add action=log chain=dstnat