Not necessarily.
I'm spitballing here, but I'm assuming the Citrix thing is essentially a Virtual Machine. In that case, can they not allow Citrix access to DWAN?
I'm not really tech-y, especially in the realm of that sort of stuff. But I suspect the allies that use Citrix also have "standard" workstations in offices.
I'm not tech savvy either and I'll probably make this more confusing. And yes, we have standard workstations at our offices at our desks (although they are laptops so we can take them to client sites for audit work).
Citrix is not a machine, it's software. Imagine logging into your normal DWAN computer at work... you put in your username and password, it loads up windows.. you see your desktop, outlook, you go to "file explorer" and can see the various drives, M://, personal drive, etc. You've got DRMIS, ACIMS, etc.
Okay, now imagine you are in Japan and need to access all that stuff. You go to the public library and access a public computer... you go to
www.forces.gc.ca/citrix... you put in your username and password* and a window pops up and it's your work desktop, same outlook, same drives, same DRMIS, same background that you had set, same files on the desktop, etc.
*we have an additional authenticator app on our phones so in addition to my normal password, I put in the pin from authenticator... so you'd need my cell phone to do this.
Edit to add... oh yeah, and citrix works with numerous monitors just fine.