owrt

OpenWRT Chaos Calmer 15.05/LuCI Master (git-15.233.47308-791ca8b)

I'm trying to login to OpenWRT from the WAN via another machine (1.10 below).
Trying to login to the external WAN interface on OpenWRT via:
	$ ssh -l root 192.168.3.10 -p 2222

Getting no response. Here's some info.

Network --> Interfaces
WAN (eth1)   192.168.3.10/24
LAN (br-lan) 192.168.30.1/24

Added to System -> Administration
Dropbear Instance
	interface WAN
	port 2222
	allow root user to login

Add to /etc/conf/firewall ...
config rule
	option src 'wan'
	option proto 'tcp'
	option dest_port '2222'
	option target 'ACCEPT'

Here is my network:
internet <--> modem +
                    |
                    |
       +--- (1.1) --+-- (3.1) -------+ 192.168.3.10 (WAN)
       |          Router              | OpenWRT
       |                              + 192.168.30.1 (LAN)
       + 192.168.1.10                 |
         workstation                  + 192.168.30.100 (laptop)

Any help much appreciated.