SOLVED:

It appears that the wifi chip you use does not support TKIP encryption.
I switched the router to use AES and everything started working.

You might want to document that.

Mike

SOLVED:

It appears that the wifi chip you use does not support TKIP encryption.
I switched the router to use AES and everything started working.

You might want to document that.

Mike

That's correct. However, I have an update.
This is not just an SSH problem.

I tried a
wget 192.168.10.103
--2015-11-25 20:26:27-- http://192.168.10.103/
Connecting to 192.168.10.103:80... connected.
HTTP request sent, awaiting response...

and it hangs.
The same with google or other addresses.
The same with an oupgrade.

However, I then connected the Omega to my phone hotspot and
oupgrade succeeded.

So, there is an incompatibility between the Omega and my router. But...
My router is
DD-WRT logo
DD-WRT v24-sp2 (11/21/10) std
(SVN revision 15778)

And I've connected ESP8266's, Particle's, Raspberry Pi's , etc, etc with it.
So this is a very well tested router. My guess would be that something like
ARP is getting screwed up, but I'm reaching the end of my expertise.
Any suggestions for diagnostics I can do? If I'm hitting this, so will others...

Mike

Omega just arrived! Hooray!
I've configured the Wifi to my local network.
I can access the web setup on the local IP address, so access to port 80
is working.
I can ssh out of the Omega to other machines.
What I can't do is ssh into the Omega from the local network.
I can ssh from the Omega to itself on its local IP address.
Also, ssh to random ports (ie: 66666) gives me connection refused, whereas just ssh (port 22), hangs silently.
So, it appears that out of the box the firewall is not configured to accept incoming ssh.
Is this correct, how do I fix it, and if not, what is wrong?

cheers
Mike