Lately, a lot of development/design job offerings I'm come across ask for "links to examples of your work". In the past ten years, I've worked primarily for three web companies. One of the websites is no longer in existing (a victim of the dot-com bubble burst). Also, I have had little to no impact on the design of the "public" pages for these websites. However, I have done extensive design and development work on their proprietary web software - online applications available to users with secure login credentials.
When companies/recruiters ask for examples of my work, how should I handle this in my situation?
Should I explain my situation to them - that I've done a lot of work that isn't publicly facing? I'm afraid that, although honest, this sounds like a cop-out from someone without experience.
Thanks in advance.