Steam Client

UDP 27000 to 27015 inclusive (Game client traffic)
UDP 27015 to 27030 inclusive (Typically Matchmaking and HLTV)
TCP 27014 to 27050 inclusive (Steam downloads)
UDP 4380

14   chain=dstnat action=dst-nat to-addresses=192.168.75.10 protocol=udp 
     dst-port=27000-27030 

15   chain=dstnat action=dst-nat to-addresses=192.168.75.10 protocol=tcp 
     dst-port=27014-27050 

16   chain=dstnat action=dst-nat to-addresses=192.168.75.10 protocol=udp 
     dst-port=4380 

Steam's page says the following:

Steam Client

UDP 27000 to 27015 inclusive (Game client traffic)
UDP 27015 to 27030 inclusive (Typically Matchmaking and HLTV)
TCP 27014 to 27050 inclusive (Steam downloads)
UDP 4380

Then I did the following rules

Code: Select all

14   chain=dstnat action=dst-nat to-addresses=192.168.75.10 protocol=udp 
     dst-port=27000-27030 

Code: Select all

15   chain=dstnat action=dst-nat to-addresses=192.168.75.10 protocol=tcp 
     dst-port=27014-27050 

Code: Select all

16   chain=dstnat action=dst-nat to-addresses=192.168.75.10 protocol=udp 
     dst-port=4380 

I tested them with the PortForward's PortChecker tool and everything is fine but the Steam stops logging in when the rule 14 is active. Its one of those 30 UDP ports, I dunno which one but I guess it doesn't matter. I need to know the reason the Steam stops working when I redirect the ports and the redirecting is working properly according to the testing tool.

Add the dst-address or in-interface parameter to the rules, this could solve your issue.

Add the dst-address or in-interface parameter to the rules, this could solve your issue.

Have you Steam and using it?

I use Steam for play

The username on steam are the same as here...

You do not need to open anything, do not do any, remove all your rule, are all wrong,

simply enable UPNP on Routerboard and configure it correctly

This is my UPNP config, I never have one game that not work with that:

Code: Select all

/ip upnp
set allow-disable-external-interface=no enabled=yes show-dummy-rule=yes
/ip upnp interfaces
add disabled=no interface=MATRIX type=internal
add disabled=no interface=pppoe-client type=external

MATRIX must be your local ethernet / bridge
pppoe-client your internet source.

Add the dst-address or in-interface parameter to the rules, this could solve your issue.

Have you Steam and using it?

Honestly no but I assumed this is 'normal' natting.
With the rules given, all packets will be dst-natted, inbound and outbound. That's why I thought about specifying in-interface could help.