WebSEAL and Cookies
My current infrastructure uses WebSEAL as a reverse proxy, which means that a session must be established before any of the back end servers can be accessed, including the server hosting my web service. This poses a problem with soapUI which doesn't provide a mechanism to log into WebSEAL directly, instead I can establish the session using a browser and then copy the cookies into the tool.
Log into the application server and authenticate as usual, then copy the cookies using firebug:

Then paste the cookies into soapUI:

Now all requests will forward the cookie information which WebSEAL should recognize, allowing it to pass through as authenticated.