[ILUG] ssh conundrum

[Niall O Broin]

I have numerous stanzas like this in ~/.ssh/config :

Host dale
         HostName gateway.mydomain.com
         Port 2204
         HostKeyAlias dale


which makes for convenient use of ssh to access a bunch of machines 
behind the gateway. However, the problem is that when I am connected to 
the LAN behind the gateway this doesn't work (of course it's not 
necessary, but it doesn't work which is the problem). Possible 
solutions are:

1) Maintain 2 different copies of ~/.ssh/config, one without the Host 
stanzas and one with
2) Write a wrapper script for ssh which figures out where I am and does 
the necessary

I don't much like 1) as it necessitates manually switching between 
them. 2) would be OK, and looks like the most likely option. But I'm 
wondering is there a more elegant 3) which might be some extra nifty 
use of ssh config options.



Niall