Guys,

I got RB493AH and i want to enable NAT on ether2 to ether9 because ether1 will act as WAN port.

I won't use switch that's why i want to enable NAT on ether2 to ether9. im using dynamic IP (DHCP) from my ISP.

i will use this IP as gateway "10.10.10.254" and i should be able to ping device in ether2 to ether9 with IP address range from 10.10.10.1 to 10.10.10.9


Please help me guys.


Thanks

You need to nat traffic that goes out of ether1 (your wan interface).
http://wiki.mikrotik.com/wiki/Manual:IP ... Source_NAT

Then you need to bridge or switch together eth2-eth9 and run dhcp server on bridge interface.
http://wiki.mikrotik.com/wiki/Manual:IP ... c_examples

thanks for your reply mrz.

I forgot to mention that i will not use DHCP on my network.

I just need to enable NAT from ether2 to ether9 and i should be able to ping device attach on ether2 to ether9,

Thanks

You need to nat traffic that goes out of ether1 (your wan interface).
http://wiki.mikrotik.com/wiki/Manual:IP ... Source_NAT

Then you need to bridge or switch together eth2-eth9 and run dhcp server on bridge interface.
http://wiki.mikrotik.com/wiki/Manual:IP ... c_examples

can you give me an example on how to create a bridge or switch together ethe2 - ethe9

thanks

Is this what you want?
/ip firewall nat
add chain=srcnat action=masquerade out-interface=ether1

You should be able to connect them as a switch. Set ether2 as the master-port on ether3-9
/interface ethernet
set X master-port=ether2

I manage to work this out by issuing the command. ether2 t ether9 is now working fine.


/ip address add address=10.10.10.254/24 interface=ether1
/ip firewall nat add chain=srcnat src-address=10.10.10.0/24 action=masquerade

and i create a bridge & port.

Thanks

I manage to work this out by issuing the command. ether2 t ether9 is now working fine.


/ip address add address=10.10.10.254/24 interface=ether1
/ip firewall nat add chain=srcnat src-address=10.10.10.0/24 action=masquerade

and i create a bridge & port.

Thanks

this setup work but when you reboot / restart the router it will not work.

guys, could someone tell me what is wrong with this config. this work while the router in ON but when you reboot the server. NAT on ether2 - ether9 is not working.

/interface enable ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,ether8,ether9
/ip dhcp-client add interface=ether1 disabled=no
/ip address add address=10.10.10.254/24 interface=ether1
/ip firewall nat add chain=srcnat src-address=10.10.10.0/24 action=masquerade


/ ip firewall filter
add chain=input connection-state=established comment="Accept established connections"
add chain=input connection-state=related comment="Accept related connections"
add chain=input connection-state=invalid action=drop comment="Drop invalid connections"
add chain=input protocol=udp action=accept comment="UDP" disabled=no
add chain=input protocol=icmp limit=50/5s,2 comment="Allow limited pings"
add chain=input protocol=icmp action=drop comment="Drop excess pings"
add chain=input in-interface=ether1 src-address=10.10.0.0/24 comment="From our LAN" action=accept
add chain=input action=log log-prefix="DROP INPUT" comment="Log everything else"
add chain=input action=drop comment="Drop everything else"

/ip dns set allow-remote-requests=yes

this setup work by creating a bridge and port.

Why do you set static IP and dhcp-client on ether1? As I understood static IP is for local LAN, so then which one is WAN interface?

because i can't figure out how to enable NAT on ether2-ether9. it is my experimental.


thanks